LTC6247CMS#PBF [Linear]
LTC6247 - Dual 180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps; Package: MSOP; Pins: 10; Temperature Range: 0°C to 70°C;型号: | LTC6247CMS#PBF |
厂家: | Linear |
描述: | LTC6247 - Dual 180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps; Package: MSOP; Pins: 10; Temperature Range: 0°C to 70°C 放大器 光电二极管 |
文件: | 总26页 (文件大小:704K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LTC6246/LTC6247/LTC6248
180MHz, 1mA Power
Efficient Rail-to-Rail
I/O Op Amps
FEATURES
DESCRIPTION
TheLTC®6246/LTC6247/LTC6248aresingle/dual/quadlow
power,highspeedunitygainstablerail-to-railinput/output
operationalamplifiers.Ononly1mAofsupplycurrentthey
feature an impressive 180MHz gain-bandwidth product,
90V/µs slew rate and a low 4.2nV/√Hz of input-referred
noise. The combination of high bandwidth, high slew rate,
low power consumption and low broadband noise makes
these amplifiers unique among rail-to-rail input/output op
ampswithsimilarsupplycurrents. Theyareidealforlower
supply voltage high speed signal conditioning systems.
n
Gain Bandwidth Product: 180MHz
n
–3dB Frequency (A = 1): 120MHz
V
n
Low Quiescent Current: 1mA Max
n
High Slew Rate: 90V/µs
n
Input Common Mode Range Includes Both Rails
n
Output Swings Rail-to-Rail
n
Low Broadband Voltage Noise: 4.2nV/√Hz
n
Power-Down Mode: 42μA
Fast Output Recovery
n
n
Supply Voltage Range: 2.5V to 5.25V
n
Input Offset Voltage: 0.5mV Max
TheLTC6246familymaintainshighefficiencyperformance
from supply voltage levels of 2.5V to 5.25V and is fully
specified at supplies of 2.7V and 5.0V.
n
Input Bias Current: 100nA
n
Large Output Current: 50mA
n
CMRR: 110dB
n
Forapplicationsthatrequirepower-down,theLTC6246and
theLTC6247inMS10offerashutdownpinwhichdisables
the amplifier and reduces current consumption to 42µA.
Open Loop Gain: 45V/mV
n
Operating Temperature Range: –40°C to 125°C
n
Single in 6-Lead TSOT-23
n
Dual in MS8, 2mm × 2mm DFN,TS0T-23, MS10
The LTC6246 family can be used as a plug-in replacement
formanycommerciallyavailableopampstoreducepower
or to improve input/output range and performance.
n
Quad in MS16
APPLICATIONS
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
n
Low Voltage, High Frequency Signal Processing
n
Driving A/D Converters
n
Rail-to-Rail Buffer Amplifiers
Active Filters
Video Amplifiers
Fast Current Sensing Amplifiers
Battery Powered Equipment
n
n
n
n
TYPICAL APPLICATION
350kHz FFT Driving ADC
0
f
f
= 350.195kHz
SAMP
IN
Low Noise Low Distortion Gain = 2 ADC Driver
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
= 2.2Msps
SFDR = 82dB
SNR = 70dB
1024 POINT FFT
3.3V 2.5V
3.3V
V
DD
V
REF
CS
SDO
SCK
V
IN
+
A
IN
LTC6246
LTC2366
GND
–
OV
DD
499Ω
1%
624678 TA01a
499Ω
1%
10pF
0
200
400
600
800
1000
FREQUENCY (kHz)
624678 TA01b
624678fb
1
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
(Note 1)
ABSOLUTE MAXIMUM RATINGS
+
–
Total Supply Voltage (V to V )................................5.5V
Input Current (+IN, –IN, SHDN) (Note 2).............. 10mA
Output Current (Note 3) ..................................... 100mA
Operating Temperature Range (Note 4).. –40°C to 125°C
Specified Temperature Range (Note 5) .. –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Junction Temperature ........................................... 150°C
Lead Temperature (Soldering, 10 sec)
(MSOP, TSOT Packages Only)...............................300°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
TOP VIEW
+
OUT A
–IN A
+IN A
1
2
3
4
8
7
6
5
V
+
+
1
2
3
4
5
10
9
V
OUT A
–IN A
+IN A
OUT A
–IN A
+IN A
1
2
3
4
8 V
–
+
–
+
–
+
OUT B
–IN B
+IN B
OUT B
–IN B
+IN B
SHDNB
7 OUT B
6 –IN B
5 +IN B
–
+
–
+
–
+
8
–
V
7
6
–
–
V
V
9
SHDNA
MS8 PACKAGE
8-LEAD PLASTIC MSOP
MS PACKAGE
10-LEAD PLASTIC MSOP
KC PACKAGE
8-LEAD PLASTIC UTDFN (2mm × 2mm × 0.6mm)
T
= 150°C, θ = 163°C/W (NOTE 9)
JA
JMAX
T
JMAX
= 150°C, θ = 160°C/W (NOTE 9)
JA
T
= 125°C, θ = 102°C/W (NOTE 9)
JMAX
JA
–
EXPOSED PAD (PIN 9) IS V , MUST BE SOLDERED TO PCB
TOP VIEW
TOP VIEW
1
2
3
4
5
6
7
8
OUT A
–IN A
+IN A
16 OUT D
15 –IN D
–
+
–
+
+
OUT 1
–
6 V
14 +IN D
+
–
V
13 V
V
2
5 SHDN
+
–
+
–
+
–
+IN B
–IN B
OUT B
12 +IN C
11 –IN C
10 OUT C
9
+IN 3
4 –IN
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
MS PACKAGE
16-LEAD PLASTIC MSOP
T
= 150°C, θ = 192°C/W (NOTE 9)
JMAX
JA
T
= 150°C, θ = 125°C/W (NOTE 9)
JMAX
JA
TOP VIEW
+
TOP VIEW
1
2
3
4
8
7
6
5
V
OUT A
–IN A
+IN A
+
OUT A 1
–IN A 2
8 V
–
+
OUT B
–IN B
+IN B
–
7 OUT B
6 –IN B
5 +IN B
+
–
+
–
+IN A 3
–
9
+
–
V
V
4
TS8 PACKAGE
DC PACKAGE
8-LEAD (2mm × 2mm × 0.8mm) PLASTIC DFN
8-LEAD PLASTIC TSOT-23
T
= 150°C, θ = 195°C/W (NOTE 9)
JA
JMAX
T
= 125°C, θ = 102°C/W (NOTE 9)
JMAX
JA
–
EXPOSED PAD (PIN 9) IS V , MUST BE SOLDERED TO PCB
624678fb
2
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING* PACKAGE DESCRIPTION
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
LTC6246CS6#TRMPBF
LTC6246IS6#TRMPBF
LTC6246HS6#TRMPBF
LTC6247CKC#TRMPBF
LTC6247IKC#TRMPBF
LTC6247CMS8#PBF
LTC6247IMS8#PBF
LTC6247CTS8#TRMPBF
LTC6247ITS8#TRMPBF
LTC6247HTS8#TRMPBF
LTC6247CMS#PBF
LTC6246CS6#TRPBF
LTC6246IS6#TRPBF
LTC6246HS6#TRPBF
LTC6247CKC#TRPBF
LTC6247IKC#TRPBF
LTC6247CMS8#TRPBF
LTC6247IMS8#TRPBF
LTC6247CTS8#TRPBF
LTC6247ITS8#TRPBF
LTC6247HTS8#TRPBF
LTC6247CMS#TRPBF
LTC6247IMS#TRPBF
LTC6247CDC#TRPBF
LTC6247IDC#TRPBF
LTC6248CMS#TRPBF
LTC6248IMS#TRPBF
LTC6248HMS#TRPBF
LTDWF
LTDWF
LTDWF
DWJT
DWJT
LTDWH
LTDWH
LTDWK
LTDWK
LTDWK
LTDWM
LTDWM
LGVN
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
6-Lead Plastic TSOT-23
8-Lead (2mm × 2mm × 0.6mm) UTDFN
8-Lead (2mm × 2mm × 0.6mm) UTDFN
8-Lead Plastic MSOP
–40°C to 85°C
0°C to 70°C
8-Lead Plastic MSOP
–40°C to 85°C
0°C to 70°C
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
8-Lead Plastic TSOT-23
10-Lead Plastic MSOP
LTC6247IMS#PBF
10-Lead Plastic MSOP
–40°C to 85°C
0°C to 70°C
LTC6247CDC#TRMPBF
LTC6247IDC#TRMPBF
LTC6248CMS#PBF
8-Lead (2mm × 2mm × 0.8mm) DFN
8-Lead (2mm × 2mm × 0.8mm) DFN
16-Lead Plastic MSOP
LGVN
–40°C to 85°C
0°C to 70°C
6248
LTC6248IMS#PBF
6248
16-Lead Plastic MSOP
–40°C to 85°C
–40°C to 125°C
LTC6248HMS#PBF
6248
16-Lead Plastic MSOP
TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
(V = 5V) The l denotes the specifications which apply across the
ELECTRICAL CHARACTERISTICS
S
specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 5V, 0V; VSHDN = 2V; VCM = VOUT
2.5V, unless otherwise noted.
=
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
V
V
V
V
= Half Supply
–500
–1000
50
500
1000
µV
µV
OS
CM
CM
CM
CM
l
l
l
+
= V – 0.5V, NPN Mode
–2.5
–3
0.1
50
2.5
3
mV
mV
Input Offset Voltage Match
(Channel-to-Channel) (Note 8)
= Half Supply
–600
–1000
600
1000
µV
µV
∆V
OS
+
= V – 0.5V, NPN Mode
–3.5
–4
0.1
3.5
4
mV
mV
l
l
V
T
Input Offset Voltage Drift
Input Bias Current (Note 7)
–2
µV/°C
OS
C
I
V
V
= Half Supply
–350
–550
–30
350
550
nA
nA
B
CM
l
l
+
= V – 0.5V, NPN Mode
100
0
400
1000
1500
nA
nA
CM
624678fb
3
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
(V = 5V) The l denotes the specifications which apply across the
ELECTRICAL CHARACTERISTICS
S
specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 5V, 0V; VSHDN = 2V; VCM = VOUT
2.5V, unless otherwise noted.
=
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
OS
Input Offset Current
V
= Half Supply
–250
–400
–10
250
400
nA
nA
CM
CM
l
l
+
V
= V – 0.5V, NPN Mode
–250
–400
–10
250
400
nA
nA
e
Input Noise Voltage Density
Input 1/f Noise Voltage
Input Noise Current Density
Input Capacitance
f = 100kHz
4.2
1.6
2.0
nV/√Hz
µV
n
f = 0.1Hz to 10Hz
f = 100kHz
P-P
i
n
pA/√Hz
C
Differential Mode
Common Mode
2
0.8
pF
pF
IN
R
Input Resistance
Differential Mode
Common Mode
32
14
kΩ
MΩ
IN
A
Large Signal Voltage Gain
R = 1k to Half Supply (Note 10)
30
14
45
V/mV
V/mV
VOL
L
l
l
R = 100Ω to Half Supply (Note 10)
L
5
2.5
15
V/mV
V/mV
CMRR
Common Mode Rejection Ratio
V
= 0V to 3.5V
78
76
110
dB
dB
CM
l
l
I
Input Common Mode Range
Power Supply Rejection Ratio
0
V
V
CMR
S
PSRR
V = 2.5V to 5.25V
69
65
73
dB
dB
S
l
l
V
CM
= 1V
Supply Voltage Range (Note 6)
2.5
5.25
V
–
V
Output Swing Low (V
– V )
No Load
25
70
40
55
mV
mV
OL
OUT
l
l
l
l
l
l
l
l
l
l
l
l
I
I
= 5mA
110
160
mV
mV
SINK
= 25mA
160
70
250
450
mV
mV
SINK
+
V
Output Swing High (V – V
)
OUT
No Load
100
150
mV
mV
OH
I
I
= 5mA
130
300
–80
100
0.95
1.25
42
175
225
mV
mV
SOURCE
= 25mA
500
750
mV
mV
SOURCE
I
I
Output Short-Circuit Current
Supply Current per Amplifier
Sourcing
Sinking
–35
–30
mA
mA
SC
60
40
mA
mA
V
V
V
V
= Half Supply
1
1.4
mA
mA
S
CM
+
= V – 0.5V
1.4
1.8
mA
mA
CM
I
I
Disable Supply Current per Amplifier
= 0.8V
= 0.8V
75
200
µA
µA
SD
SHDN
SHDN
SHDN Pin Current Low
–3
–4
–1.6
0
0
µA
µA
SHDNL
624678fb
4
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
ELECTRICAL CHARACTERISTICS
(V = 5V) The l denotes the specifications which apply across the
S
specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 5V, 0V; VSHDN = 2V; VCM = VOUT
2.5V, unless otherwise noted.
=
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
SHDN Pin Current High
V
SHDN
= 2V
–300
–350
35
300
350
nA
nA
SHDNH
l
l
l
V
V
SHDN Pin Input Voltage Low
SHDN Pin Input Voltage High
0.8
V
V
L
2
H
I
Output Leakage Current Magnitude in
Shutdown
V
= 0.8V, Output Shorted to Either
100
nA
OSD
SHDN
Supply
t
t
Turn-On Time
V
= 0.8V to 2V
= 2V to 0.8V
5
µs
µs
ON
SHDN
SHDN
Turn-Off Time
V
2
OFF
BW
–3dB Closed Loop Bandwidth
Gain-Bandwidth Product
A = 1, R = 1k to Half Supply
120
180
MHz
V
L
GBW
f = 2MHz, R = 1k to Half Supply
100
70
MHz
MHz
L
l
t , 0.1%
Settling Time to 0.1%
Settling Time to 0.01%
Slew Rate
A = –1, V = 2V Step R = 1k
74
202
90
ns
ns
S
V
O
L
t , 0.01%
S
A = –1, V = 2V Step R = 1k
V O L
SR
A = –3.33, 4.6V Step (Note 11)
V
60
50
V/µs
V/µs
l
FPBW
Full Power Bandwidth
Harmonic Distortion
R = 1k to Half Supply
L
V
= 4V (Note 13)
4
MHz
OUT
P-P
HD2/HD3
f = 100kHz, V = 2V
P-P
110/90
88/80
78/62
dBc
dBc
dBc
C
O
f = 1MHz, V = 2V
C O P-P
f = 2MHz, V = 2V
C P-P
O
R = 100Ω to Half Supply
L
f = 100kHz, V = 2V
P-P
90/79
66/60
59/51
C
O
f = 1MHz, V = 2V
C
O
P-P
f = 2MHz, V = 2V
C
O
P-P
Differential Gain (Note 14)
Differential Phase (Note 14)
Crosstalk
A = 1, R = 1k, V = 2.5V
0.2
0.08
–90
%
Deg
dB
∆G
V
L
S
A = 1, R = 1k, V = 2.5V
∆θ
V
L
S
A = –1, R = 1k to Half Supply,
V
L
V
OUT
= 2V , f = 1MHz
P-P
(V = 2.7V) The l denotes the specifications which apply across the
ELECTRICAL CHARACTERISTICS
S
specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 2.7V, 0V; VSHDN = 2V; VCM = VOUT
1.35V, unless otherwise noted.
=
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
V
CM
V
CM
V
CM
V
CM
= Half Supply
–100
–300
500
1000
1400
µV
µV
OS
l
l
l
+
= V – 0.5V, NPN Mode
–1.75
–2.25
0.75
–20
0.1
2
3.25
3.75
mV
mV
Input Offset Voltage Match
(Channel-to-Channel) (Note 8)
= Half Supply
–700
–1000
700
1000
µV
µV
∆V
OS
+
= V – 0.5V, NPN Mode
–3.5
–4
3.5
4
mV
mV
l
l
V
OS
T
Input Offset Voltage Drift
µV/°C
C
624678fb
5
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
(V = 2.7V) The l denotes the specifications which apply across the
ELECTRICAL CHARACTERISTICS
S
specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 2.7V, 0V; VSHDN = 2V; VCM = VOUT
1.35V, unless otherwise noted.
=
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
Input Bias Current (Note 7)
V
CM
V
CM
V
CM
V
CM
= Half Supply
–450
–600
–100
450
600
nA
nA
B
l
l
l
l
+
= V – 0.5V, NPN Mode
50
0
350
–10
–10
1000
1500
nA
nA
I
OS
Input Offset Current
= Half Supply
–250
–350
250
350
nA
nA
+
= V – 0.5V, NPN Mode
–250
–350
250
350
nA
nA
e
Input Noise Voltage Density
Input 1/f Noise Voltage
Input Noise Current Density
Input Capacitance
f = 100kHz
4.6
1.7
1.8
nV/√Hz
n
f = 0.1Hz to 10Hz
f = 100kHz
µV
P-P
i
n
pA/√Hz
C
Differential Mode
Common Mode
2
0.8
pF
pF
IN
R
IN
Input Resistance
Differential Mode
Common Mode
32
12
kΩ
MΩ
A
Large Signal Voltage Gain
R = 1k to Half Supply
(Note 12)
15
7.5
25
7.5
100
V/mV
V/mV
VOL
L
l
l
R = 100Ω to Half Supply
2
1.3
V/mV
V/mV
L
(Note 12)
CMRR
Common Mode Rejection Ratio
V
CM
= 0V to 1.2V
80
78
dB
dB
l
l
I
Input Common Mode Range
Power Supply Rejection Ratio
0
V
V
CMR
S
PSRR
V = 2.5V to 5.25V
69
65
73
dB
dB
S
l
l
V
CM
= 1V
Supply Voltage Range (Note 6)
2.5
5.25
V
–
V
Output Swing Low (V
– V )
No Load
20
80
40
55
mV
mV
OL
OUT
l
l
l
l
l
l
l
l
l
l
I
I
= 5mA
125
160
mV
mV
SINK
= 10mA
110
60
175
225
mV
mV
SINK
+
V
OH
Output Swing High (V – V
)
OUT
No Load
85
100
mV
mV
I
I
= 5mA
135
180
–35
50
190
225
mV
mV
SOURCE
= 10mA
275
400
mV
mV
SOURCE
I
I
Short Circuit Current
Sourcing
Sinking
–20
–15
mA
mA
SC
25
20
mA
mA
Supply Current per Amplifier
V
= Half Supply
0.89
1
1
1.3
mA
mA
S
CM
CM
+
V
= V – 0.5V
1.3
1.7
mA
mA
624678fb
6
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
ELECTRICAL CHARACTERISTICS
(V = 2.7V) The l denotes the specifications which apply across the
S
specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 2.7V, 0V; VSHDN = 2V; VCM = VOUT
1.35V, unless otherwise noted.
=
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
I
I
Disable Supply Current per Amplifier
V
V
V
= 0.8V
= 0.8V
= 2V
22
50
90
µA
µA
SD
SHDN
SHDN
SHDN
l
l
SHDN Pin Current Low
SHDN Pin Current High
–1
–1.5
–0.5
45
0
0
µA
µA
SHDNL
SHDNH
–300
–350
300
350
nA
nA
l
l
l
V
V
SHDN Pin Input Voltage
0.8
V
V
L
SHDN Pin Input Voltage
2.0
H
I
Output Leakage Current Magnitude in Shutdown
V
= 0.8V, Output Shorted to Either
100
nA
OSD
SHDN
Supply
t
t
Turn-On Time
V
V
= 0.8V to 2V
= 2V to 0.8V
5
µs
µs
ON
SHDN
SHDN
Turn-Off Time
2
OFF
BW
–3dB Closed Loop Bandwidth
Gain-Bandwidth Product
A = 1, R = 1k to Half Supply
100
150
MHz
MHz
V
L
GBW
f = 2MHz, R = 1k to Half Supply
80
50
L
l
t , 0.1
Settling Time to 0.1%
Settling Time to 0.01%
Slew Rate
A = –1, V = 2V Step R = 1k
119
170
55
ns
ns
S
V
O
L
t , 0.01
S
A = –1, V = 2V Step R = 1k
V O L
SR
A = –1, 2V Step
V
V/µs
MHz
dB
FPBW
Full Power Bandwidth
Crosstalk
V
= 2V (Note 13)
3.3
–90
OUT
P-P
A = –1, R = 1k to Half Supply,
V
L
V
OUT
= 2V , f = 1MHz
P-P
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 6: Minimum supply voltage is guaranteed by power supply rejection
ratio test.
Note 7: The input bias current is the average of the average of the currents
through the positive and negative input pins.
Note 2: The inputs are protected by back-to-back diodes. If any of
the input or shutdown pins goes 300mV beyond either supply or the
differential input voltage exceeds 1.4V the input current should be limited
to less than 10mA. This parameter is guaranteed to meet specified
performance through design and/or characterization. It is not production
tested.
Note 8: Matching parameters are the difference between amplifiers A and
D and between B and C on the LTC6248; between the two amplifiers on the
LTC6247.
Note 9: Thermal resistance varies with the amount of PC board metal
connected to the package. The specified values are with short traces
connected to the leads with minimal metal area.
Note 3: A heat sink may be required to keep the junction temperature
below the absolute maximum rating when the output current is high.
Note 10: The output voltage is varied from 0.5V to 4.5V during
measurement.
Note 4: The LTC6246C/LTC6247C/LTC6248C and LTC6246I/LTC6247I/
LTC6248I are guaranteed functional over the temperature range of –40°C
to 85°C. The LTC6246H/LTC6247H/LTC6248H are guaranteed functional
over the temperature range of –40°C to 125°C.
Note 11: Middle 80% of the output waveform is observed. R = 1k at half
supply.
Note 12: The output voltage is varied from 0.5V to 2.2V during
measurement.
L
Note 5: The LTC6246C/LTC6247C/LTC6248C are guaranteed to meet
specified performance from 0°C to 70°C. The LTC6246C/LTC6247C/
LTC6248C are designed, characterized and expected to meet specified
performance from –40°C to 85°C but are not tested or QA sampled at
these temperatures. The LTC6246I/LTC6247I/LTC6248I are guaranteed
to meet specified performance from –40°C to 85°C. The LTC6246H/
LTC6247H/LTC6248H are guaranteed to meet specified performance from
–40°C to 125°C.
Note 13: FPBW is determined from distortion performance in a gain of +2
configuration with HD2, HD3 < –40dBc as the criteria for a valid output.
Note 14: Differential gain and phase are measured using a Tektronix
TSG120YC/NTSC signal generator and a Tektronix 1780R video
measurement set.
624678fb
7
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
TYPICAL PERFORMANCE CHARACTERISTICS
VOS Distribution, VCM = VS/2
(MS, PNP Stage)
VOS Distribution, VCM = VS/2
(TSOT-23, PNP Stage)
VOS Distribution, VCM = V+ – 0.5V
(MS, NPN Stage)
22
20
18
16
14
12
10
8
16
14
12
10
8
25
20
15
10
5
V
V
= 5V, 0V
= 4.5V
V
V
= 5V, 0V
= 2.5V
V
V
= 5V, 0V
S
= 2.5V
CM
S
CM
S
CM
6
6
4
4
2
2
0
0
0
–2000 –1200
–400
400
1200
2000
–375 –250 –150 –50 50 150 250 350
–175 –125 –75 –25 25
75 125 175
INPUT OFFSET VOLTAGE (µV)
INPUT OFFSET VOLTAGE (µV)
INPUT OFFSET VOLTAGE (µV)
624678 G03
624678 G01
624678 G02
VOS Distribution, VCM = V+ – 0.5V
(TSOT-23, NPN Stage)
VOS vs Temperature
(MS10, PNP Stage)
VOS vs Temperature
(MS10, NPN Stage)
18
16
14
12
10
8
500
400
300
200
100
0
2500
2000
1500
1000
500
V
V
= 5V, 0V
= 4.5V
V
V
= 5V, 0V
= 2.5V
V
V
= 5V, 0V
S
= 4.5V
CM
S
CM
S
CM
6 DEVICES
6 DEVICES
0
–500
–1000
–1500
–2000
–2500
6
–100
–200
–300
–400
4
2
0
–2000 –1200
–400
400
1200
2000
–55 –35 –15
5
25 45 65 85 105 125
–55 –35 –15
5
25 45 65 85 105 125
INPUT OFFSET VOLTAGE (µV)
TEMPERATURE (°C)
TEMPERATURE (°C)
624678 G04
624678 G05
624678 G06
V
OS vs Temperature
VOS vs Temperature
(MS10, NPN Stage)
Offset Voltage
vs Input Common Mode Voltage
(MS10, PNP Stage)
2500
2000
1500
1000
500
500
400
1200
1000
800
600
400
200
0
V
V
= 2.7V, 0V
= 1.35V
V
= 5V, 0V
S
S
CM
6 DEVICES
300
200
100
–55°C
25°C
0
0
–100
–200
–300
–400
–500
–500
–1000
–1500
–2000
125°C
V
V
= 2.7V, 0V
CM
6 DEVICES
S
= 2.2V
–55 –35 –15
5
25 45 65 85 105 125
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
–55 –35 –15
5
25 45 65 85 105 125
TEMPERATURE (°C)
INPUT COMMON MODE VOLTAGE (V)
TEMPERATURE (°C)
624678 G08
624678 G09
624678 G07
624678fb
8
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current
Offset Voltage vs Output Current
Warm-Up Drift vs Time
vs Common Mode Voltage
5
0
800
600
2.0
1.5
V
= 2ꢀ5V
= 25°C
V
=
2.5V
V
= 5V, 0V
S
A
S
S
125°C
T
400
25°C
125°C
–5
200
1.0
0
–10
–15
–20
–25
–30
–35
0.5
–200
–400
–600
–800
–1000
–1200
–1400
–1600
–55°C
0
–55°C
–0.5
–1.0
–1.5
–2.0
25°C
0
20 40 60 80 100 120 140 160
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
–100 –75 –50 –25
0
25 50 75 100
TIME AFTER POWER-UP (s)
COMMON MODE VOLTAGE (V)
OUTPUT CURRENT (mA)
624678 G11
624678 G12
624678 G10
Input Noise Voltage and Noise
Current vs Frequency
Input Bias Current vs Temperature
0.1Hz to 10Hz Voltage Noise
1.5
1.0
0.5
0
1000
100
10
700
600
500
400
300
200
100
0
V
= 5V, 0V
V
= ±±.5V
S
S
e , V = 4.5V
V
= 4.5V
n
CM
CM
e , V = 2.5V
n
CM
0.5
–1.0
–1.5
i , V = 2.5V
n
CM
1.0
V
= 2.5V
CM
i , V = 4.5V
n
CM
–100
0.1
–200
0
1
±
3
4
5
6
7
8
9
10
1
10 100 1k 10k 100k 1M 10M
–55
–25
5
35
65
95
125
TIME (1s/DIV)
FREQUENCY (Hz)
TEMPERATURE (°C)
6±4678 G14
624678 G15
624678 G13
SHDN Pin Current
Supply Current
vs Supply Voltage (Per Amplifier)
Supply Current Per Amplifier
vs SHDN Pin Voltage
vs SHDN Pin Voltage
1.20
1.00
0.80
0.60
0.40
0.20
0
1.25
1.00
0.75
0.50
0.25
0
0.25
0
V
S
= 5V, 0V
V = 5V, 0V
S
125°C
–55°C
SHUTDOWN CURRENT
25°C
–0.25
–0.50
–0.75
–1.00
–1.25
–1.50
–1.75
–2.00
–2.25
–2.50
T
= 125°C
A
–55°C
T
= –55°C
A
T
= 25°C
25°C
2
A
125°C
0
1
2
3
4
5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0
0.5
1
1.5
2.5
3
3.5
4
4.5
5
TOTAL SUPPLY VOLTAGE (V)
SHDN PIN VOLTAGE (V)
SHDN PIN VOLTAGE (V)
624678 G16
624678 G17
624678 G18
624678fb
9
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
TYPICAL PERFORMANCE CHARACTERISTICS
Output Saturation Voltage
Minimum Supply Voltage,
VCM = VS/2 (PNP Operation)
Minimum Supply Voltage,
VCM = V+ – 0.5V (NPN Operation)
vs Load Current (Output High)
12
10
8
5
4
10
1
V
= 2.ꢀV
V
= V – 0.5V
CC
S
CM
3
–55°C
T
= 12ꢀ°C
A
6
T
= 2ꢀ°C
A
2
4
25°C
1
0.1
125°C
2
125°C
T
= –ꢀꢀ°C
1
A
0
0
–55°C
4
25°C
3.5
–2
–1
0.01
2
2.5
3
3.5
4
4.5
5
5.5
2
2.5
3
4.5
5
5.5
0.01
0.1
10
100
TOTAL SUPPLY VOLTAGE (V)
TOTAL SUPPLY VOLTAGE (V)
LOAD CURRENT (mA)
624678 G19
624678 G20
624678 G21
Output Saturation Voltage
vs Load Current (Output Low)
Output Short-Circuit Current
vs Power Supply Voltage
Open Loop Gain
500
400
10
1
120
100
80
V
= 2.ꢀV
T
= 25°C
T
= –55°C
A
A
S
S
V
= 5V, 0V
SINK
T
T
= 25°C
A
300
60
R
= 100 TO MID SUPPLY
L
= 125°C
200
A
40
R
= 1k TO MID SUPPLY
L
100
20
0
T
= 12ꢀ°C
A
0
–100
–200
–300
–400
–500
–20
–40
–60
–80
–100
T
= 2ꢀ°C
A
0.1
R
L
= 1k TO GROUND
T
= 125°C
A
R
L
= 100 TO GROUND
SOURCE
T
= –ꢀꢀ°C
A
T
= –55°C
A
T
= 25°C
A
0.01
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0.01
0.1
1
10
100
1.25 1.45 1.65 1.85 2.05 2.25 2.45 2.65
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
POWER SUPPLY VOLTAGE ( Vꢀ
624678 G24
624678 G22
624678 G23
Open Loop Gain
Gain vs Frequency (AV = 2)
Gain vs Frequency (AV = 1)
6
12
6
1000
900
800
700
600
500
400
300
200
100
0
T
= 25°C
A
S
V
= 2.7V, 0V
R
= 100 TO MID SUPPLY
L
0
–6
R
= 1k TO MID SUPPLY
L
0
R
L
= 1k TO GROUND
–12
–18
–24
–6
–12
–18
V
=
2.ꢀV
S
A
F
R
= 100 TO GROUND
L
V
=
2.ꢀV
T
= 2ꢀ°C
S
A
L
–100
–200
–300
T
= 2ꢀ°C
= 1k
R = R = 1k
R
G
R
= 1k
L
0.01
0.1
1
10
100
0.01
0.1
1
10
100
0
0.5
1
1.5
2
2.5 2.7
FREQUENCY (MHz)
FREQUENCY (MHz)
OUTPUT VOLTAGE (V)
624678 G26
624678 G27
624678 G25
624678fb
10
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
TYPICAL PERFORMANCE CHARACTERISTICS
Gain Bandwidth and Phase
Margin vs Temperature
Gain Bandwidth and Phase
Margin vs Supply Voltage
Open Loop Gain and Phase
vs Frequency
70
60
50
40
80
70
60
50
40
30
20
10
0
150
100
50
70
60
50
T
= 25°C
= 1k
T
= 25°C
= 1k
L
A
L
T
= 25°C
R = 1k
L
A
A
R
R
PHASE MARGIN
V
= 2ꢀ5V
PHASE
S
V
=
=
2ꢀ5V
PHASE MARGIN
S
300
250
200
150
100
V
1ꢀ35V
S
GAIN
V
= 1ꢀ35V
S
200
180
160
140
120
100
GAIN BANDWIDTH PRODUCT
V
=
2ꢀ5V
1ꢀ35V
S
0
GAIN BANDWIDTH PRODUCT
2ꢀ5V
V
=
S
V
=
S
–50
–100
–10
–20
V
= 1ꢀ35V
S
–55 –35 –15
5
25 45 65 85 105 125
100k
1M
10M
FREQUENCY (Hz)
100M 300M
2.5
3
3.5
4.5
4
5
TEMPERATURE (°C)
TOTAL SUPPLY VOLTAGE (V)
624678 G30
624678 G28
624678 G29
Common Mode Rejection Ratio
vs Frequency
Power Supply Rejection Ratio
vs Frequency
Output Impedance vs Frequency
80
70
60
50
40
30
20
10
0
1000
110
100
90
80
70
60
50
40
30
20
10
0
V
T
=
2ꢀ5V
V
=
2.ꢀV
T = 25°C
A
S
A
S
= 25°C
V
= 2ꢀ5V
S
100
10
A
= 10
V
NEGATIVE SUPPLY
A
= 2
V
POSITIVE SUPPLY
1
A
= 1
V
0.1
0.01
–10
0.001
–10
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
100k
1M
10M
FREQUENCY (Hz)
100M
1G
10 100 1k 10k 100k 1M 10M 100M 1G
FREQUENCY (Hz)
624678 G33
624678 G31
624678 G31
Series Output Resistor
vs Capacitive Load (AV = 1)
Series Output Resistor
vs Capacitive Load (AV = 2)
Slew Rate vs Temperature
140
1±0
100
80
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
A
= –1, R = 1k, V
= 4V (±±25V),
V
V
A
=
OUT
= 1
2ꢀ5V
V
L
OUT P-P
500Ω
500Ω
S
A
= 1
V
±V (±12.5V) SLEW RATE MEASURED
P-P
–
= 100mV
P-P
R
S
V
OUT
–
AT MIDDLE ±/. OF OUTPUT
R
S
V
+
V
IN
V
OUT
+
FALLING, V = ±±25V
S
V
C
IN
L
R
S
= 10Ω
A
= 2
V
C
L
R
= 10Ω
S
RISING, V = ±±25V
S
R = 20Ω
S
R
= 20Ω
S
FALLING, V = ±12.5V
S
R
= 49ꢀ9Ω
S
V
V
=
2ꢀ5V
=200mV
RISING, V = ±12.5V
S
OUT
60
S
P-P
R
= 49ꢀ9Ω
R = R = 500Ω,
S
F
V
G
A
= 2
40
–55 –.5 –15
5
±5 45 65 85 105 1±5
10
100
1000
10000
10
100
1000
10000
TEMPERATURE (°C)
CAPACITIVE LOAD (pF)
CAPACITIVE LOAD (pF)
6±4678 G.4
624678 G35
624678 G36
624678fb
11
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
TYPICAL PERFORMANCE CHARACTERISTICS
Distortion vs Frequency
(AV = 1, 5V)
Distortion vs Frequency
(AV = 1, 2.7V)
Distortion vs Frequency
(AV = 2, 5V)
–40
–50
–40
–50
–40
–50
V
V
A
=
OUT
= 1
2.5V
= 2V
V
V
A
=
OUT
= 1
1.35V
= 1V
V
V
A
=
S
OUT
= 2
V
2.5V
= 2V
S
S
R
= 100Ω, 3RD
R
= 100Ω, 3RD
L
L
P-P
P-P
P-P
V
V
–60
–60
–60
R
= 100Ω, 3RD
L
R
L
= 100Ω, 2ND
R
L
= 100Ω, 2ND
–70
–70
–70
R
= 100Ω, 2ND
L
R
L
= 1kΩ, 2ND
–80
–80
–80
R
L
= 1kΩ, 3RD
–90
–90
–90
R
L
= 1kΩ, 3RD
R
L
= 1kΩ, 3RD
–100
–110
–120
–100
–110
–120
–100
–110
–120
R
L
= 1kΩ, 2ND
1
R
L
= 1kΩ, 2ND
1
0.01
0.1
10
0.01
0.1
1
10
0.01
0.1
10
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
624678 G37
624678 G38
624678 G39
Distortion vs Frequency
AV = 2, 2.7V)
Maximum Undistorted Output
Signal vs Frequency
Settling Time vs Output Step
(Noninverting)
–40
–50
5
4
3
2
1
0
200
180
160
140
120
100
80
V
A
=
2ꢀ.V
S
V
A
R
L
= 100Ω, ꢀRD
= 1
–
+
T
= 2.°C
V
OUT
V
R
L
= 100Ω, 2ND
IN
–60
1k
–70
R
= 1kΩ, 2ND
L
–80
1mV
1mV
R
L
= 1kΩ, ꢀRD
–90
V
= 2.5V
= 25°C
= 1kΩ
S
A
L
T
60
–100
–110
–120
R
40
10mV
10mV
HD2, HD3 < –40dBc
V
V
A
=
OUT
= 2
1.ꢀ5V
= 1V
S
A
A
= 2
= –1
P-P
V
V
20
V
0
0.01
0.1
1
10
–4 –3 –2 –1
0
1
2
3
4
0.01
0.1
1
10
FREQUENCY (MHz)
OUTPUT STEP (V)
FREQUENCY (MHz)
624678 G40
624678 G42
624678 G41
624678fb
12
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
TYPICAL PERFORMANCE CHARACTERISTICS
Settling Time vs Output Step
(Inverting)
SHDN Pin Response Time
Large Signal Response
200
180
160
140
120
100
80
V
A
T
= 2ꢀ.V
1k
S
V
A
= –1
1k
= 2.°C
–
V
IN
V
OUT
+
0V
1k
V
SHDN
±.ꢀV/DIV
0V
1mV
10mV
1mV
1V/DIV
0V
OUT
1.6V/DIV
60
V
40
10mV
6±4678 G44
6±4678 G4.
10µs/DIV
±00ns/DIV
20
A
V
= 1
A
V
= 1
= ±±2.V
= 1k
V
S
L
V
S
= ±±.ꢀV
= 1k
0
R
R
–4 –3 –2 –1
0
1
2
3
4
L
V
= 1.6V
IN
OUTPUT STEP (V)
624678 G43
Small Signal Response
Output Overdriven Recovery
0V
V
IN
0V
1V/DIV
25mV/DIV
0V
V
OUT
2V/DIV
624678 G46
624678 G47
50ns/DIV
100ns/DIV
A
V
= 1
=
A
V
=
=
= 1k
= 3V
2
V
S
L
V
S
L
2ꢀ5V
2ꢀ.V
R
= 1k
R
V
IN
P-P
624678fb
13
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
PIN FUNCTIONS
–
–
–IN:InvertingInputofAmplifier. ValidinputrangefromV
V :NegativeSupplyVoltage.Typically0V.Thiscanbemade
+
+
–
to V .
a negative voltage as long as 2.5V ≤ (V – V ) ≤ 5.25V.
+IN: Non-Inverting Input of Amplifier. Valid input range
SHDN: Active Low Shutdown. Threshold is typically 1.1V
–
+
–
from V to V .
referenced to V . Floating this pin will turn the part on.
+
V : Positive Supply Voltage. Allowed applied voltage
OUT:AmplifierOutput.Swingsrail-to-railandcantypically
source/sink over 50mA of current at a total supply of 5V.
–
ranges from 2.5V to 5.25V when V = 0V.
APPLICATIONS INFORMATION
Circuit Description
pair and the PNP pair becomes inactive for the remain-
ing input common mode range. Also, at the input stage,
devices Q17 to Q19 act to cancel the bias current of the
PNP input pair. When Q1/Q2 are active, the current in
Q16 is controlled to be the same as the current in Q1 and
Q2. Thus, the base current of Q16 is nominally equal to
the base current of the input devices. The base current
of Q16 is then mirrored by devices Q17 to Q19 to cancel
the base current of the input devices Q1/Q2. A pair of
complementarycommonemitterstages,Q14/Q15,enable
the output to swing from rail-to-rail.
TheLTC6246/LTC6247/LTC6248haveaninputandoutput
signal range that extends from the negative power supply
to the positive power supply. Figure 1 depicts a simplified
schematic of the amplifier. The input stage is comprised
of two differential amplifiers, a PNP stage, Q1/Q2, and an
NPN stage, Q3/Q4 that are active over different common
mode input voltages. The PNP stage is active between
the negative supply to nominally 1.2V below the posi-
tive supply. As the input voltage approaches the positive
supply, the transistor Q5 will steer the tail current, I , to
1
the current mirror, Q6/Q7, activating the NPN differential
+
V
R3
R4
R5
+
–
V
V
ESDD1
ESDD2
+
+
Q12
I
I
1
2
Q15
Q13
Q11
+IN
–IN
C2
+
D6
D5
D8
D7
V
BIAS
Q5
I
3
ESDD5
OUT
C
C
–
V
Q4 Q3
Q1 Q2
ESDD3
ESDD4
Q18
BUFFER
AND
OUTPUT BIAS
Q10
ESDD6
+
Q9
–
V
V
Q8
Q16
Q17
C1
Q19
Q6
Q7
Q14
R1
R2
–
V
624678 F01
Figure 1. LTC6246/LTC6247/LTC6248 Simplified Schematic Diagram
624678fb
14
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
APPLICATIONS INFORMATION
Input Offset Voltage
Input Protection
The input stages are protected against a large differential
input voltage of 1.4V or higher by 2 pairs of back-to-back
diodes to prevent the emitter-base breakdown of the input
transistors. In addition, the input and shutdown pins have
reverse biased diodes connected to the supplies. The cur-
rent in these diodes must be limited to less than 10mA.
The amplifiers should not be used as comparators or in
other open loop applications.
The offset voltage will change depending upon which
input stage is active. The PNP input stage is active from
the negative supply rail to approximately 1.2V below the
positive supply rail, then the NPN input stage is activated
for the remaining input range up to the positive supply rail
with the PNP stage inactive. The offset voltage magnitude
for the PNP input stage is trimmed to less than 500µV with
5V total supply at room temperature, and is typically less
than 150μV. The offset voltage for the NPN input stage
is typically less than 1.7mV with 5V total supply at room
temperature.
ESD
The LTC6246 family has reverse-biased ESD protection
diodes on all inputs and outputs as shown in Figure 1.
Input Bias Current
There is an additional clamp between the positive and
negative supplies that further protects the device during
ESD strikes. Hot plugging of the device into a powered
socket must be avoided since this can trigger the clamp
resultinginlargercurrentsflowingbetweenthesupplypins.
The LTC6246 family uses a bias current cancellation cir-
cuit to compensate for the base current of the PNP input
pair. When the input common mode voltage is less than
200mV, the bias cancellation circuit is no longer effective
and the input bias current magnitude can reach a value
above 1µA. For common mode voltages ranging from
0.2V above the negative supply to 1.2V below the positive
supply, the low input bias current of the LTC6246 family
allows the amplifiers to be used in applications with high
source resistances where errors due to voltage drops
must be minimized.
Capacitive Loads
The LTC6246/LTC6247/LTC6248 are optimized for high
bandwidthandlowpowerapplications.Consequentlythey
have not been designed to directly drive large capacitive
loads. Increased capacitance at the output creates an ad-
ditional pole in the open loop frequency response, wors-
ening the phase margin. When driving capacitive loads, a
resistorof 10Ω to100Ωshould be connected betweenthe
amplifier output and the capacitive load to avoid ringing
or oscillation. The feedback should be taken directly from
the amplifier output. Higher voltage gain configurations
tend to have better capacitive drive capability than lower
gain configurations due to lower closed loop bandwidth
and hence higher phase margin. The graphs titled Series
Output Resistor vs Capacitive Load demonstrate the tran-
sient response of the amplifier when driving capacitive
loads with various series resistors.
Output
The LTC6246 family has excellent output drive capability.
The amplifiers can typically deliver over 50mA of output
drive current at a total supply of 5V. The maximum out-
put current is a function of the total supply voltage. As
the supply voltage to the amplifier decreases, the output
current capability also decreases. Attention must be paid
to keep the junction temperature of the IC below 150°C
(refer to the Power Dissipation Section) when the output
is in continuous short circuit. The output of the amplifier
has reverse-biased diodes connected to each supply. If
the output is forced beyond either supply, extremely high
current will flow through these diodes which can result
in damage to the device. Forcing the output to even 1V
beyond either supply could result in several hundred mil-
liamps of current through either diode.
624678fb
15
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
APPLICATIONS INFORMATION
Feedback Components
Power Dissipation
When feedback resistors are used to set up gain, care
must be taken to ensure that the pole formed by the
feedback resistors and the parasitic capacitance at the
inverting input does not degrade stability. For example if
the amplifier is set up in a gain of +2 configuration with
gain and feedback resistors of 5k, a parasitic capacitance
of 5pF (device + PC board) at the amplifier’s inverting
input will cause the part to oscillate, due to a pole formed
at 12.7MHz. An additional capacitor of 5pF across the
feedback resistor as shown in Figure 2 will eliminate any
ringing or oscillation. In general, if the resistive feedback
network results in a pole whose frequency lies within the
closed loop bandwidth of the amplifier, a capacitor can be
added in parallel with the feedback resistor to introduce
a zero whose frequency is close to the frequency of the
pole, improving stability.
The LTC6246 and LTC6247 contain one and two ampli-
fiers respectively. Hence the maximum on-chip power
dissipation for them will be less than the maximum on-
chip power dissipation for the LTC6248, which contains
four amplifiers.
The LTC6248 is housed in a small 16-lead MS package
andtypicallyhasathermalresistance(θ )of125°C/W. It
JA
is necessary to ensure that the die’s junction temperature
does not exceed 150°C. The junction temperature, T , is
J
calculated from the ambient temperature, T , power dis-
A
sipation, PD, and thermal resistance, θ :
JA
T = T + (P • θ )
J
A
D
JA
The power dissipation in the IC is a function of the supply
voltage, output voltage and load resistance. For a given
supplyvoltagewithoutputconnectedtogroundorsupply,
the worst-case power dissipation P
occurs when
D(MAX)
5pF
the supply current is maximum and the output voltage at
half of either supply voltage for a given load resistance.
5k
P
is approximately (since I actually changes with
D(MAX)
S
–
output load current) given by:
V
OUT
C
PAR
V
2
S 2
+
PD(MAX) =(VS •IS(MAX))+
/RL
5k
V
IN
624678 F02
Example:ForanLTC6248ina16-leadMSpackageoperat-
ing on 2.5V supplies and driving a 100Ω load to ground,
theworst-casepowerdissipationisapproximatelygivenby
Figure 2. 5pF Feedback Cancels Parasitic Pole
Shutdown
2
P
/Amp = (5 • 1.3mA) + (1.25) /100 = 22mW
D(MAX)
The LTC6246 and LTC6247MS have SHDN pins that can
shut down the amplifier to 42µA typical supply current.
The SHDN pin needs to be taken below 0.8V above the
negative supply for the amplifier to shut down. When left
floating, the SHDN pin is internally pulled up to the posi-
tive supply and the amplifier remains on.
If all four amplifiers are loaded simultaneously then the
total power dissipation is 88mW.
AttheAbsoluteMaximumambientoperatingtemperature,
the junction temperature under these conditions will be:
T = T + P • 125°C/W
J
A
D
= 125 + (0.088W • 125°C/W) = 136°C
which is less than the absolute maximum junction tem-
perature for the LTC6248 (150°C).
Refer to the Pin Configuration section for thermal resis-
tances of various packages.
624678fb
16
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
TYPICAL APPLICATIONS
12-Bit ADC Driver
Low Noise Low Power DC-Accurate Single Supply
Photodiode Amplifier
Figure3showstheLTC6246drivinganLTC236612-bitA/D
converter. The low wideband noise of the LTC6246 main-
tains a 70dB SNR even without the use of an intermediate
antialiasing RC filter. On a single 3.3V supply with a 2.5V
reference, a full –1dBFS output can be obtained without
the amplifier transitioning between input regions, thus
minimizing crossover distortion. Figure 4 shows an FFT
obtained with a sampling rate of 2.2Msps and a 350kHz
input waveform. Spurious free dynamic range is a quite
handsome 82dB.
Figure 5 shows the LTC6246 applied as a low power high
performance transimpedance amplifier for a photodiode.
A low noise JFET Q1 acts as a current buffer, with R2 and
R3 imposing a low frequency gain of approximately 1.
Transimpedance gain is set by feedback resistor R1 to
1MΩ. R4 and R5 set the LTC6246 inputs at 1V below
the 3V rail, with C3 reducing their noise contribution. By
feedback this 1V also appears across R2, setting the JFET
quiescent current at 1mA completely independent of its
pinchoff voltage and I
characteristics. It does this by
GS
DSS
3.3V 2.5V
placing the JFETs 1mA V at the gate referenced to the
3.3V
source, which is sitting 1V above ground. For this JFET,
that will typically be about 500mV, and this voltage is
imposed as a reverse voltage on the photodiode PD1. At
V
DD
V
REF
CS
SDO
SCK
V
IN
+
A
LTC6246
LTC2366
GND
IN
–
zero I photocurrent, the output sits at the same volt-
OV
DD
PD
499Ω
1%
age and rises as photocurrent increases. As mentioned
624678 F03
499Ω
1%
before, R2 and R3 set the JFET gain to 1 at low frequency.
10pF
R1
1M, 1%
C1
0.1pF
Figure 3. Single Supply 12-Bit ADC Driver
3V
R2
1k
3V
Q1
NXP
BF862
+
0
I
PD
V
= V + I • 1M
f
f
= 350.195kHz
SAMP
LTC6246
OUT
R
PD
IN
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
= 2.2Msps
–
SFDR = 82dB
SNR = 70dB
1024 POINT FFT
PD1
OSRAM
SFH213
C2
R3
1k
6.8nF
FILM
OR NPO
C3
0.1µF
R4
10k
R5
20k
3V
R6
10M
3V
R7
1k
+
–
V
LT6003
R
0
200
400
600
800
1000
FREQUENCY (kHz)
C4
1µF
624678 F04
624678 F05
Figure 4. 350kHz FFT Showing 82dB SFDR
–3dB BW = 700kHz
= 2.2mA
I
CC
OUTPUT NOISE = 160µV
MEASURED ON A 1MHz BW
RMS
V
OUT
IS REFERRED TO V
R
AT ZERO PHOTOCURRENT, V
= V
R
OUT
Figure 5. Low Noise Low Power DC Accurate
Single Supply Photodiode Amplifier
624678fb
17
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
TYPICAL APPLICATIONS
Thisisnotthelowestnoiseconfigurationforatransistor,as
downstream noise sources appear at the input completely
unattenuated. At low frequency, this is not a concern for a
transimpedance amplifier because the noise gain is 1 and
theoutputnoiseisdominatedbythe130nV/√Hzofthe1MΩ
R1. However, at increasing frequencies the capacitance
of the photodiode comes into play and the circuit noise
gain rises as the 1MΩ feedback looks back into lower and
lower impedance. But capacitor C2 comes to the rescue.
In addition to the obvious quenching of noise source R3,
capacitor C2 increases the JFET gain to about 30 at high
frequency effectively attenuating the downstream noise
contributions of R2 and the op amp input noise. Thus the
circuit achieves low input voltage noise at high frequency
where it is most needed. Amplifier LT6003 is used to
buffer the output voltage of the photodiode and R7 and
C4 are used to filter out the voltage noise of the LT6003.
Bandwidth to 700kHz was achieved with this circuit, with
60dB 5.5MHz Gain Block
Figure 6 shows the LTC6247 configured as a low power
high gain high bandwidth block. Two amplifiers each
configured with a gain of 31V/V, are cascaded in series.
A 660nF capacitor is used to limit the DC gain of the block
to around 30dB to minimize output offset voltage. Figure 7
shows the frequency response of the block. Mid-band
voltage gain is approximately 60dB with a –3dB frequency
of 5.5MHz, thus resulting in a gain-bandwidth product
of 5.5GHz with only 1.9mA of quiescent supply current.
Single 2.7V Supply 4MHz 4th Order Butterworth Filter
Benefitting from low voltage operation and rail-to-rail
output, a low power filter that is suitable for antialiasing
can be built as shown in Figure 8. On a 2.7V supply the
filter has a passband of approximately 4MHz with 2V
P-P
input signal and a stopband attenuation that is greater
than –75dB at 43MHz as shown in Figure 9. The resistor
and capacitor values can be scaled to reduce noise at the
cost of large signal power consumption and distortion.
integratedoutputnoisebeing160µV
upto1MHz.Total
RMS
supply current was a very low 2.2mA.
65
60
55
50
45
40
1.5k
2.5V
30k
2.5V
50Ω
V
1k
–
–
1/2LTC6247
660nF
1/2LTC6247
V
OUT
+
+
V
V
= 2ꢀ5V
S
35
30
25
20
IN
= 4ꢀ5mV
IN
= 1kΩ
P-P
–2.5V
–2.5V
R
624678 F06
L
DC GAIN = 30dB
(DUE TO 660nF DC BLOCKING CAP)
OUTPUT OFFSET = 4mV
Figure 6. 60dB 5.5MHz Gain Block
10k
100k
1M
10M
FREQUENCY (kHz)
624678 F07
Figure 7
10
0
910Ω
1.1k
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
12pF
5.6pF
2.7k
910Ω
2.7V
–
V
IN
1.1k
2.3k
2.7V
–
56pF
1/2LTC6247
+
120pF
1/2LTC6247
V
OUT
+
624678 F08
1.2V
V
V
= 2.7V, 0V
S
= 2V
IN P-P
= 1kΩ to 0V
R
L
Figure 8. Single 2.7V Supply 4MHz
4th Order Butterworth Filter
10k
100k
1M
10M
100M
FREQUENCY (kHz)
624678 F09
Figure 9
624678fb
18
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
KC Package
8-Lead Plastic UTDFN (2mm × 2mm)
(Reference LTC DWG # 05-08-ꢀ749 Rev Ø)
ꢀ.37 0.ꢀ0
R = 0.ꢀꢀ5
TYP
ꢀ.37 0.05
2.00 0.ꢀ0
5
8
R = 0.05
TYP
0.70 0.05
0.40 0.ꢀ0
PIN ꢀ NOTCH
2.55 0.05
ꢀ.ꢀ5 0.05
2.00 0.ꢀ0
0.64 0.ꢀ0
0.64 0.05
R = 0.20 OR
0.25 × 45°
CHAMFER
PIN ꢀ BAR
TOP MARK
(SEE NOTE 6)
PACKAGE
OUTLINE
(KC8) UTDFN 0ꢀ07 REVØ
4
ꢀ
0.25 0.05
0.45 BSC
0.23 0.05
0.45 BSC
0.55 0.05
0.ꢀ25 REF
ꢀ.35 REF
ꢀ.35 REF
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
BOTTOM VIEW—EXPOSED PAD
0.00 – 0.05
NOTE:
ꢀ. DRAWING IS NOT A JEDEC PACKAGE OUTLINE
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.ꢀ5mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN ꢀ LOCATION ON THE
TOP AND BOTTOM OF PACKAGE
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1ꢀꢀ0 Rev G)
3.00 0.102
(.118 .004)
(NOTE 3)
0.52
(.0205)
REF
0.889 0.127
(.035 .005)
8
7 ꢀ 5
3.00 0.102
(.118 .004)
(NOTE 4)
5.10
(.201)
MIN
4.90 0.152
(.193 .00ꢀ)
3.20 – 3.45
(.12ꢀ – .13ꢀ)
DETAIL “A”
0° – ꢀ° TYP
0.254
(.010)
GAUGE PLANE
0.ꢀ5
(.025ꢀ)
BSC
0.42 0.038
(.01ꢀ5 .0015)
TYP
1
2
3
4
0.53 0.152
(.021 .00ꢀ)
1.10
(.043)
MAX
0.8ꢀ
(.034)
REF
RECOMMENDED SOLDER PAD LAYOUT
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.22 – 0.38
0.101ꢀ 0.0508
(.009 – .015)
(.004 .002)
0.ꢀ5
(.025ꢀ)
BSC
TYP
MSOP (MS8) 0213 REV G
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.00ꢀ") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.00ꢀ") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
624678fb
19
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
MS Package
10-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1ꢀꢀ1 Rev F)
0.889 0.127
(.035 .005)
5.10
3.20 – 3.45
(.201)
(.12ꢀ – .13ꢀ)
MIN
3.00 0.102
(.118 .004)
(NOTE 3)
0.497 0.07ꢀ
(.019ꢀ .003)
REF
0.50
(.0197)
BSC
0.305 0.038
(.0120 .0015)
TYP
10 9
8
7 ꢀ
RECOMMENDED SOLDER PAD LAYOUT
3.00 0.102
(.118 .004)
(NOTE 4)
4.90 0.152
(.193 .00ꢀ)
DETAIL “A”
0.254
(.010)
0° – ꢀ° TYP
GAUGE PLANE
1
2
3
4 5
0.53 0.152
(.021 .00ꢀ)
0.8ꢀ
(.034)
REF
1.10
(.043)
MAX
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.17 – 0.27
(.007 – .011)
TYP
0.101ꢀ 0.0508
(.004 .002)
0.50
(.0197)
BSC
MSOP (MS) 0213 REV F
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.00ꢀ") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.00ꢀ") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
624678fb
20
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
MS Package
16-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1669 Rev A)
0.889 ±0.127
(.035 ±.005)
5.10
3.20 – 3.45
(.201)
(.126 – .136)
MIN
4.039 ±0.102
(.159 ±.004)
(NOTE 3)
0.50
(.0197)
BSC
0.305 ±0.038
(.0120 ±.0015)
TYP
0.280 ±0.076
(.011 ±.003)
REF
16151413121110
9
RECOMMENDED SOLDER PAD LAYOUT
3.00 ±0.102
(.118 ±.004)
(NOTE 4)
DETAIL “A”
0.254
4.90 ±0.152
(.193 ±.006)
(.010)
0° – 6° TYP
GAUGE PLANE
0.53 ±0.152
(.021 ±.006)
1 2 3 4 5 6 7 8
0.86
(.034)
REF
1.10
(.043)
MAX
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.17 – 0.27
(.007 – .011)
TYP
0.1016 ±0.0508
(.004 ±.002)
MSOP (MS16) 0213 REV A
0.50
(.0197)
BSC
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
624678fb
21
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
S6 Package
6-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1636)
2.90 BSC
(NOTE 4)
0.62
MAX
0.95
REF
1.22 REF
1.4 MIN
1.50 – 1.75
(NOTE 4)
2.80 BSC
3.85 MAX 2.62 REF
PIN ONE ID
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45
6 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
(NOTE 3)
S6 TSOT-23 0302
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
624678fb
22
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
DC8 Package
8-Lead Plastic DFN (2mm × 2mm)
(Reference LTC DWG # 05-08-1719 Rev A)
0.70 ±0.05
2.55 ±0.05
0.64 ±0.05
1.15 ±0.05
(2 SIDES)
PACKAGE
OUTLINE
0.25 ±0.05
0.45 BSC
1.37 ±0.05
(2 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
R = 0.115
TYP
5
8
R = 0.05
TYP
0.40 ±0.10
PIN 1 NOTCH
2.00 ±0.10 0.64 ±0.10
(4 SIDES)
(2 SIDES)
R = 0.20 OR
0.25 × 45°
CHAMFER
PIN 1 BAR
TOP MARK
(SEE NOTE 6)
(DC8) DFN 0409 REVA
4
1
0.23 ±0.05
0.45 BSC
0.75 ±0.05
0.200 REF
1.37 ±0.10
(2 SIDES)
BOTTOM VIEW—EXPOSED PAD
0.00 – 0.05
NOTE:
1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE
TOP AND BOTTOM OF PACKAGE
624678fb
23
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
TS8 Package
8-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1637 Rev A)
2.90 BSC
(NOTE 4)
0.40
MAX
0.65
REF
1.22 REF
1.4 MIN
1.50 – 1.75
(NOTE 4)
2.80 BSC
3.85 MAX 2.62 REF
PIN ONE ID
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.22 – 0.36
8 PLCS (NOTE 3)
0.65 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.95 BSC
TS8 TSOT-23 0710 REV A
0.09 – 0.20
(NOTE 3)
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
624678fb
24
For more information www.linear.com/LTC6246
LTC6246/LTC6247/LTC6248
REVISION HISTORY
REV
DATE
2/10
7/15
DESCRIPTION
PAGE NUMBER
A
Changes to Graph G15.
9
B
Added 2mm × 2mm × 0.8mm DFN package.
2, 3, 23
624678fb
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
25
LTC6246/LTC6247/LTC6248
TYPICAL APPLICATION
700kHz, 1MΩ Single Supply Photodiode Amplifier
Output Noise Spectrum
Transient Response
R1
1M, 1%
200
5V/DIV
LED DRIVER
VOLTAGE
C1
0.1pF
3V
R2
1k
20nV/√Hz/DIV
3V
500mV/DIV
OUTPUT
+
I
Q1
NXP
BF862
PD
LTC6246
V
≈ 0.5V + I • 1M
PD
OUT
WAVEFORM
0V
–
C2
PD1
OSRAM
SFH213
–3dB BW = 700kHz
= 2.2mA
OUTPUT NOISE = 153µV
RMS
MEASURED ON A 1MHz BW
6.8nF
FILM
OR NPO
R3
1k
0
624678 TA02c
I
CC
500ns/DIV
C3
0.1µF
10kHz
100kHz
1MHz
624678 TA02b
R4
10k
R5
20k
3V
624678 TA02a
RELATED PARTS
PART NUMBER DESCRIPTION
Operational Amplifiers
COMMENTS
LT1818/LT1819 Single/Dual Wide Bandwidth, High Slew Rate Low Noise and
Distortion Op Amps
400MHz, 9mA, 6nV/√Hz, 2500V/µs, 1.5mV –85dBc at 5MHz
LT1806/LT1807 Single/Dual Low Noise Rail-to-Rail Input and Output Op Amps 325MHz, 13mA, 3.5nV/√Hz, 140V/µs, 550µV, 85mA Output Drive
LT6230/LT6231/ Single/Dual/Quad Low Noise Rail-to-Rail Output Op Amps
LT6232
215MHz, 3.5mA, 1.1nV/√Hz, 70V/µs, 350µV
LT6200/LT6201 Single/Dual Ultralow Noise Rail-to-Rail Input/Output Op Amps 165MHz, 20mA, 0.95nV/√Hz, 44V/µs, 1mV
LT6202/LT6203/ Single/Dual/Quad Ultralow Noise Rail-to-Rail Op Amp
LT6204
100MHz, 3mA, 1.9nV/√Hz, 25V/µs, 0.5mV
LT1468
16-Bit Accurate Precision High Speed Op Amp
90MHz, 3.9mA, 5nV/√Hz, 22V/µs, 175µV,
–96.5dB THD at 10V , 100kHz
P-P
LT1803/LT1804/ Single/Dual/Quad Low Power High Speed Rail-to-Rail Input
LT1805 and Output Op Amps
85MHz, 3mA, 21nV√Hz, 100V/µs, 2mV
LT1801/LT1802 Dual/Quad Low Power High Speed Rail-to-Rail Input and
Output Op Amps
80MHz, 2mA, 8.5nV√Hz, 25V/µs, 350µV
LT6552
LT1028
Single Supply Rail-to-Rail Output Video Difference Amplifier
Ultralow Noise, Precision High Speed Op Amps
75MHz (–3dB), 13.5mA, 55.5nV/√Hz, 350V/µs, 20mV
75MHz, 9.5mA, 0.85nV/√Hz, 11V/µs, 40µV
60MHz, 1.2mA, 1.2nV/√Hz, 15V/µs, 0.5mV
LT6233/LT6234/ Single/Dual/Quad Low Noise Rail-to-Rail Output Op Amps
LT6235
LT6220/LT6221/ Single/Dual/Quad Low Power High Speed Rail-to-Rail Input
60MHz, 1mA, 10nV/√Hz, 20V/µs, 350µV
LT6222
and Output Op Amps
LT6244
Dual High Speed CMOS Op Amp
50MHz, 7.4mA, 8nV/√Hz, 35V/µs, 100µV, Input Bias Current = 1pA
45MHz, 4.3mA, 12nV/√Hz, 45V/µs, 1.35mV
LT1632/LT1633 Dual/Quad Rail-to-Rail Input and Output Precision Op Amps
LT1630/LT1631 Dual/Quad Rail-to-Rail Input and Output Op Amps
LT1358/LT1359 Dual/Quad Low Power High Speed Op Amps
ADC’s
30MHz, 3.5mA, 6nV/√Hz, 10V/µs, 525µV
25MHz, 2.5mA, 8nV/√Hz, 600V/µs, 800µV, Drives All Capacitive Loads
LTC2366
LTC2365
LTC1417
LTC1274
3Msps, 12-Bit ADC Serial I/O
72dB SNR, 7.8mW No Data Latency TSOT-23 Package
73dB SNR, 7.8mW No Data Latency TSOT-23 Package
Single 5V or 5V Supplies, 0V to 4.096V or 2.048V Input Range
1Msps, 12-Bit ADC Serial I/O
Low Power 14-Bit 400ksps ADC Parallel I/O
Low Power 12-Bit 400ksps ADC Parallel I/O
10mW Single 5V or 5V Supplies, 0V to 4.096V or 2.048V Input Range
624678fb
LT 0715 REV B • PRINTED IN USA
26 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
●
LINEAR TECHNOLOGY CORPORATION 2009
(408)432-1900 FAX: (408) 434-0507 www.linear.com/LTC6246
相关型号:
LTC6247CMS#TRPBF
LTC6247 - Dual 180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps; Package: MSOP; Pins: 10; Temperature Range: 0°C to 70°C
Linear
LTC6247CMS8#PBF
LTC6247 - Dual 180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps; Package: MSOP; Pins: 8; Temperature Range: 0°C to 70°C
Linear
LTC6247CMS8#TRPBF
LTC6247 - Dual 180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps; Package: MSOP; Pins: 8; Temperature Range: 0°C to 70°C
Linear
LTC6247CTS8#PBF
LTC6247 - Dual 180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps; Package: SOT; Pins: 8; Temperature Range: 0°C to 70°C
Linear
LTC6247CTS8#TRMPBF
LTC6247 - Dual 180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps; Package: SOT; Pins: 8; Temperature Range: 0°C to 70°C
Linear
LTC6247CTS8#TRPBF
LTC6247 - Dual 180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps; Package: SOT; Pins: 8; Temperature Range: 0°C to 70°C
Linear
©2020 ICPDF网 联系我们和版权申明