LT1222CN8 [Linear]
500MHz Operational Amplifier; 500MHz的运算放大器
| 型号： | LT1222CN8 |
| 厂家： | 
Linear |
| 描述： | 500MHz Operational Amplifier |
| 文件： | 总12页 (文件大小：313K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1222
500MHz, 3nV/√Hz, AV ≥ 10
Operational Amplifier
U
DESCRIPTIO
EATURE
S
F
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Gain-Bandwidth: 500MHz
The LT1222 is a low noise, very high speed operational
amplifier with superior DC performance. The LT1222 is
stable in a noise gain of 10 or greater without compensa-
tion, or the part can be externally compensated for lower
closed-loop gain at the expense of lower bandwidth and
slew rate. It features reduced input offset voltage, lower
input bias currents, lower noise and higher DC gain than
devices with comparable bandwidth and slew rate. The
circuit is a single gain stage that includes proprietary DC
gain enhancement circuitry to obtain precision with high
speed. Thehighgainandfastsettlingtimemakethecircuit
an ideal choice for data acquisition systems. The circuit is
also capable of driving capacitive loads which makes it
useful in buffer or cable driver applications. The compen-
sation node can also be used to clamp the output swing.
Gain of 10 Stable Uncompensated
Slew Rate: 200V/µs
Input Noise Voltage: 3nV/√Hz
C-LoadTM Op Amp Drives Capacitive Loads
External Compensation Pin
Maximum Input Offset Voltage: 300µV
Maximum Input Bias Current: 300nA
Maximum Input Offset Current: 300nA
Minimum Output Swing Into 500Ω: ±12V
Minimum DC Gain: 100V/mV, RL = 500Ω
Settling Time to 0.1%: 75ns, 10V Step
Settling Time to 0.01%: 120ns, 10V Step
Differential Gain: 0.4%, AV = 2, RL = 150Ω
Differential Phase: 0.1°, AV = 2, RL = 150Ω
O U
The LT1222 is a member of a family of fast, high perfor-
mance amplifiers that employ Linear Technology
Corporation’s advanced complementary bipolar process-
ing. For unity-gain stable applications the LT1220 can be
used, and for gains of 4 or greater the LT1221 can be used.
PPLICATI
A
S
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Wideband Amplifiers
Buffers
Active Filters
Video and RF Amplification
Cable Drivers
8-, 10-, 12-Bit Data Acquisition Systems
and LTC are registered trademarks and LT is a trademark of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Cortporation.
U
TYPICAL APPLICATION
AV = 10 with Output Clamping
AV = –1, CC = 30pF Pulse Response
15V
3k
1N5711
6
1N5711
1N4148
0.1µF
3
2
5
+
V
IN
LT1222
V
≤ 0.5V
OUT
–
909Ω
100Ω
LT1222 • TA01
LT1222 • TA02
VIN = 100mV
f = 5MHz
RF = RG = 1k
S = ±15V
V
1
LT1222
W W W
U
ABSOLUTE AXI U RATI GS
Total Supply Voltage (V+ to V–) ............................. 36V
Differential Input Voltage ........................................ ±6V
Input Voltage .......................................................... ±VS
Output Short-Circuit Duration (Note 1)........... Indefinite
Specified Temperature Range
Operating Temperature Range
LT1222C........................................... –40°C TO 85°C
LT1222M ......................................... –55°C to 125°C
Maximum Junction Temperature (See Below)
Plastic Package ............................................... 150°C
Ceramic Package ............................................. 175°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
LT1222C (Note 2)................................... 0°C to 70°C
LT1222M ......................................... –55°C to 125°C
W
U
/O
PACKAGE RDER I FOR ATIO
TOP VIEW
ORDER PART
ORDER PART
TOP VIEW
NUMBER
NULL
NUMBER
NULL
–IN
1
2
3
4
NULL
8
7
6
5
+
8
V
+
1
3
V
SPECIAL
ORDER
CONSULT
FACTORY
LT1222CN8
LT1222MJ8
LT1222CS8
NULL
–IN
+IN
7
5
+IN
V
OUT
–
6
2
V
OUT
V
NC
NC
J8 PACKAGE
N8 PACKAGE
4
8-LEAD CERAMIC DIP 8-LEAD PLASTIC DIP
S8 PART MARKING
1222
–
V
S8 PACKAGE
8-LEAD PLASTIC SOIC
H PACKAGE
8-LEAD TO-5 METAL CAN
TJMAX = 175°C, θJA = 100°C/W (J)
TJMAX = 150°C, θJA = 130°C/W (N)
TJMAX = 150°C, θJA = 190°C/W (S)
TJMAX = 175°C, θJA = 150°C/W
Consult factory for Industrial grade parts.
VS = ±15V, TA = 25°C, VCM = 0V, unless otherwise specified.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
(Note 3)
MIN
TYP
100
100
100
3
MAX
300
300
300
UNITS
µV
V
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Current
Input Resistance
OS
I
I
nA
nA
OS
B
e
f = 10kHz
f = 10kHz
nV/√Hz
pA/√Hz
n
i
2
n
R
V
= ±12V
CM
Differential
20
12
45
12
MΩ
kΩ
IN
C
Inut Capacitance
2
14
–13
pF
V
V
IN
Input Voltage Range (Positive)
Input Voltage Range (Negative)
–12
CMRR
PSRR
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Swing
V
= ±12V
100
98
120
110
200
13
dB
dB
CM
V = ±5V to ±15V
S
A
V
V
= ±10V, R = 500Ω
100
12
V/mV
±V
VOL
OUT
OUT
OUT
L
R = 500Ω
L
I
Output Current
V
= ±12V
24
26
mA
OUT
SR
Slew Rate
Full Power Bandwidth
Gain-Bandwidth
(Note 4)
10V Peak (Note 5)
f = 1MHz
150
200
3.2
500
V/µs
MHz
MHz
GBW
2
LT1222
VS = ±15V, TA = 25°C, VCM = 0V, unless otherwise specified.
ELECTRICAL CHARACTERISTICS
SYMBOL
t , t
PARAMETER
CONDITIONS
A = 10, 10% to 90%, 0.1V
MIN
TYP
2.4
45
MAX
UNITS
ns
Rise Time, Fall Time
Overshoot
r
f
V
A = 10, 0.1V
V
%
Propagation Delay
Settling Time
A = 10, 50% V to 50% V , 0.1V
5.2
ns
V
IN
OUT
t
10V Step, 0.1%
10V Step, 0.01%
75
120
ns
ns
s
Differential Gain
Differential Phase
A = 2, C = 50pF, f = 3.58MHz, R = 150Ω (Note 6)
0.40
0.15
%
%
V
C
L
A = 10, C = 0pF, f = 3.58MHz, R = 1k (Note 6)
V
C
L
A = 2, C = 50pF, f = 3.58MHz, R = 150Ω (Note 6)
0.10
0.01
DEG
DEG
V
C
L
A = 10, C = 0pF, f = 3.58MHz, R = 1k (Note 6)
V
C
L
R
Output Resistance
Supply Current
A = 10, f = 1MHz
V
0.1
8
Ω
O
I
10.5
mA
S
VS = ±15V, 0°C ≤ TA ≤ 70°C, VCM = 0V, unless otherwise specified.
SYMBOL
PARAMETER
Input Offset Voltage
CONDITIONS
(Note 3)
MIN
TYP
100
5
MAX
600
UNITS
µV
V
OS
●
Input V Drift
µV/°C
nA
OS
I
I
Input Offset Current
Input Bias Current
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Swing
●
●
●
●
●
●
●
●
●
100
100
120
110
200
13
400
400
OS
nA
B
CMRR
PSRR
V
CM
= ±12V
100
98
dB
dB
V = ±5V to ±15V
S
A
V
V
OUT
= ±10V, R = 500Ω
100
12
24
V/mV
±V
mA
VOL
OUT
OUT
L
R = 500Ω
L
I
Output Current
V
OUT
= ±12V
26
SR
Slew Rate
(Note 4)
150
200
8
V/µs
mA
I
Supply Current
11
S
VS = ±15V, –55°C ≤ TA ≤ 125°C, VCM = 0V, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
100
5
MAX
UNITS
µV
µV/°C
nA
V
Input Offset Voltage
(Note 3)
●
600
OS
Input V Drift
OS
I
I
Input Offset Current
●
●
●
●
●
100
100
120
110
200
800
OS
Input Bias Current
1000
nA
dB
B
CMRR
PSRR
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Swing
V
= ±12V
98
98
50
10
12
CM
V = ±5V to ±15V
S
dB
A
V
V
= ±10V, R = 500Ω
V/mV
±V
±V
VOL
OUT
OUT
L
R = 500Ω
●
●
13
13
L
R = 1k
L
I
Output Current
V
V
= ±10V
= ±12V
●
●
20
12
26
13
mA
mA
OUT
OUT
OUT
SR
Slew Rate
Supply Current
(Note 4)
●
●
110
200
8
V/µs
mA
I
11
S
The
● denotes specifications which apply over the full temperature range.
Note 3: Input offset voltage is pulse tested and is exclusive of warm-up drift.
Note 4: Slew rate is measured between ±10V on an output swing of ±12V.
Note 1: A heat sink may be required when the output is shorted indefinitely.
Note 2: Commercial parts are designed to operate over –40°C to 85°C, but
are not tested nor guaranteed beyond 0°C to 70°C. Industrial grade parts
specified and tested over –40°C to 85°C are available on special request.
Consult factory.
Note 5: FPBW = SR/2πV .
Note 6: Differential Gain and Phase are tested with five amps in series.
Attenuators of 1/Gain are used as loads.
P
3
LT1222
TYPICAL PERFORMANCE CHARACTERISTICS
W
U
Input Common-Mode Range
vs Supply Voltage
Supply Current vs Supply Voltage
and Temperature
Output Voltage Swing
vs Supply Voltage
20
15
10
5
11
10
20
15
10
5
T
= 25°C
OS
T
= 25°C
A
A
L
∆V = 0.5mV
R
= 500Ω
∆V = 30mV
OS
T = 125°C
T = 25°C
+V
CM
9
8
+V
SW
–V
CM
–V
SW
7
6
5
T = –55°C
0
0
0
5
10
15
20
0
5
10
15
20
0
5
10
15
20
SUPPLY VOLTAGE (±V)
SUPPLY VOLTAGE (±V)
SUPPLY VOLTAGE (±V)
LT1222 • TPC01
LT1222 • TPC02
LT1222 • TPC03
Output Voltage Swing
vs Resistive Load
Input Bias Current
vs Input Common-Mode Voltage
Open-Loop Gain
vs Resistive Load
30
25
500
400
120
110
100
90
T
= 25°C
V
T
= ±15V
= 25°C
T = 25°C
A
A
S
A
∆V = 30mV
OS
300
V
S
= ±15V
V
200
+
20
15
10
5
±15V SUPPLIES
I
B
100
–
I
B
= ±5V
0
S
–100
–200
–300
80
70
±5V SUPPLIES
1k
–400
–500
0
10
100
10k
–15 –10
–5
0
5
10
15
10
100
1k
10k
LOAD RESISTANCE (Ω)
INPUT COMMON-MODE VOLTAGE (V)
LOAD RESISTANCE (Ω)
LT1222 • TPC04
LT1222 • TPC05
LT1222 • TPC06
Output Short-Circuit Current
vs Temperature
Power Supply Rejection Ratio
vs Frequency
Input Noise Spectral Density
1000
100
100
10
50
45
40
35
30
25
20
120
100
V
= ±5V
V
T
= ±15V
S
A
V
T
= ±15V
= 25°C
S
S
A
= 25°C
= 101
A
V
S
R
= 100k
+PSRR
80
60
i
n
–PSRR
10
1
1
40
20
0
e
n
0.1
100k
10
100
1k
10k
–50 –25
0
25
50
75 100 125
100
1k
10k 100k
1M
10M 100M
TEMPERATURE (°C)
FREQUENCY (Hz)
FREQUENCY (Hz)
LT1222 • TPC08
LT1222 • TPC07
LT1222 • TPC09
4
LT1222
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Common-Mode Rejection Ratio
vs Frequency
Output Swing and Error
Output Swing and Error
vs Settling Time (Inverting)
vs Settling Time (Noninverting)
120
100
10
8
10
8
V
T
= ±15V
= 25°C
V
T
= ±15V
= 25°C
S
A
S
A
V
T
= ±15V
= 25°C
S
A
6
4
6
4
10mV
1mV
10mV
1mV
1mV
80
60
2
0
2
0
–2
–4
–2
–4
40
20
0
10mV
10mV
1mV
–6
–8
–6
–8
–10
–10
0
25
50
75
100
125
1k
100k
1M
10M
100M
0
25
50
75
100
125
10k
FREQUENCY (Hz)
SETTLING TIME (ns)
SETTLING TIME (ns)
LT1222 • TPC12
LT1222 • TPC10
LT1222 • TPC11
Voltage Gain and Phase
vs Frequency
Frequency Response
vs Capacitive Load
Closed-Loop Output Impedance
vs Frequency
120
100
80
100
80
30
28
26
24
10
1
V
= ±15V
V
= ±15V
= 25°C
= 10
V
= ±15V
= 25°C
= –10
S
A
V
S
S
A
V
T
T
A
V
= ±15V
A
C = 100pF
C = 50pF
S
V
= ±5V
S
60
V
= ±5V
S
22
20
60
40
20
0
40
20
0
0.1
C = 0
18
16
14
12
10
C = 500pF
C = 1000pF
0.01
T
= 25°C
1k
A
0.001
–20
100
10k
100k
1M 10M 100M
1
10
100
10k
100k
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (MHz)
LT1222 • TPC15
LT1222 • TPC13
LT1222 • TPC14
Total Harmonic Distortion
vs Frequency
Gain-Bandwidth vs Temperature
Slew Rate vs Temperature
0.01
0.001
550
525
500
475
450
425
400
275
250
225
200
175
150
125
V
V
= ±15V
RMS
= 500Ω
V
= ±15V
S
O
L
S
V
A
C
= ±15V
= –10
S
V
C
= 3V
R
= 0
+
–
(SR ) + (SR )
2
SR =
A
= ±10
V
0.0001
10
100
1k
10k
100k
–50 –25
0
25
50
75 100 125
–50 –25
0
25
50
75 100 125
FREQUENCY (Hz)
TEMPERATURE (°C)
TEMPERATURE (°C)
LT1222 • TPC18
LT1222 • TPC16
LT1222 • TPC17
5
LT1222
TYPICAL PERFORMANCE CHARACTERISTICS
W
U
Large Signal, AV = 10,
CL = 10,000pF
Large Signal, AV = 10
Small Signal, AV = 10
LT1222 • TPC19
LT1222 • TPC20
LT1222 • TPC21
V
S = ±15V f = 20kHz
VS = ±15V f = 5MHz
VIN = 20mV
VS = ±15V f = 2MHz
IN = 2V
RF = 909Ω
RF = 909Ω
V
G = 100Ω
RF = 909Ω
RG = 100Ω
VIN = 2V
R
G = 100Ω
R
Small Signal, AV = –10,
CL = 1,000pF
Large Signal, AV = –10
Small Signal, AV = –10
LT1222 • TPC22
LT1222 • TPC23
LT1222 • TPC24
V
S = ±15V f = 5MHz
f = 2MHz
V
S = ±15V f = 500kHz
RF = 1k
G = 100Ω (75)
R
F = 1k
VS = ±15V
IN = 2V
R
R
F = 1k
G = 100Ω (75)
V
IN = 20mV
V
IN = 15mV
R
V
RG = 100Ω (75)
U
W U U
APPLICATIONS INFORMATION
The LT1222 is stable in noise gains of 10 or greater and
may be inserted directly into HA2520/2/5, HA2541/2/4,
AD817, AD847, EL2020, EL2044 and LM6361 applica-
tions, provided that the nulling circuitry is removed and
the amplifier configuration has a high enough noise gain.
The suggested nulling circuit for the LT1222 is shown in
the following figure.
Layout and Passive Components
The LT1222 amplifier is easy to apply and tolerant of less
than ideal layouts. For maximum performance (for ex-
ample, fast settling time) use a ground plane, short lead
lengthsandRF-qualitybypasscapacitors(0.01µFto0.1µF).
For high drive current applications use low ESR bypass
capacitors (1µF to 10µF tantalum). Sockets should be
avoided when maximum frequency performance is re-
quired. For more details see Design Note 50. Feedback
resistors greater than 5k are not recommended because a
pole is formed with the input capacitance which can cause
peaking or oscillations. Stray capacitance on pin 5 should
be minimized. Bias current cancellation circuitry is em-
ployedontheinputsoftheLT1222sotheinputbiascurrent
and input offset current have identical specifications. For
this reason, matching the impedance on the inputs to
reduce bias current errors is not necessary.
Offset Nulling
+
V
5k
1
0.1µF
3
2
8
+
7
4
6
LT1222
–
0.1µF
–
LT1222 • AI01
V
6
LT1222
U
W U U
APPLICATIONS INFORMATION
Output Clamping
may be used to reduce overshoot, to allow the amplifier to
be used in lower noise gains, or simply to reduce band-
width. Table 1 shows gain and compensation capacitor
vresus –3dBbandwidth, maximumfrequencypeakingand
small-signal overshoot.
Access to the internal compensation node at pin 5 allows
the output swing of the LT1222 to be clamped. An example
is shown on the first page of this data sheet. The compen-
sation node is approximately one diode drop above the
output and can source or sink 1.2mA. Back-to-back Schot-
tky diodes clamp pin 5 to a diode drop above ground so the
output is clamped to ±0.5V (the drop of the Schottkys at
1.2mA). The diode reference is bypassed for good AC
response. Thiscircuitisuseful for amplifyingthevoltageat
false sum nodes used in settling time measurements.
Table 1
A
C (pF)
C
f (MHz)
–3dB
Max Peaking (dB)
Overshoot (%)
V
–1
–1
–1
–1
5
30
50
82
150
10
20
30
50
0
99
4.2
0.9
0
36
13
0
70
32
13
0
0
140
100
34
3.8
0
35
5
Capacitive Loading
5
The LT1222 is stable with capacitive loads. This is accom-
plishedbysensingtheloadinducedoutputpoleandadding
compensation at the amplifier gain node. As the capacitive
load increases, both the bandwidth and phase margin
decrease. There will be peaking in the frequency domain as
shown in the curve of Frequency Response vs Capacitive
Load. The small-signal transient response will have more
overshoot as shown in the photo of the small-signal
responsewith1000pFload.Thelarge-signalresponsewith
a 10,000pF load shows the output slew rate being limited
to 4V/µs by the short-circuit current. The LT1222 can drive
coaxialcabledirectly, butforbestpulsefidelityaresistorof
value equal to the characteristic impedance of the cable
(i.e., 75Ω) should be placed in series with the output. The
other end of the cable should be terminated with the same
value resistor to ground.
5
0
1
5
15
0
0
10
10
10
10
20
20
20
150
111
40
9.5
0.2
0
45
10
2
5
10
20
0
17
0
0
82
0.1
0
10
0
5
24
10
14
0
0
For frequencies < 10MHz the frequency response of the
amplifier is approximately:
f = 1/[2π × 53Ω × (CC + 6pF) × (Noise Gain)]
The slew rate is affected as follows:
SR = 1.2mA/(CC + 6pF)
Compensation
An example would be a gain of –10 (noise gain of 11) and
CC = 20pF which has 10.5MHz bandwidth and 46V/µs slew
rate. It should be noted that the LT1222 is not stable in
AV = 1 unless CC = 50pF and a 1k resistor is used as the
feedback resistor. The 1k and input capacitance increase
the noise gain at frequency to aid stability.
The LT1222 has a typical gain-bandwidth product of
500MHz which allows it to have wide bandwidth in high
gain configurations (i.e., in a gain of 100, it will have a
bandwidth of about 5MHz). For added flexibility the ampli-
fierfrequencyresponsemaybeadjustedbyaddingcapaci-
tance from pin 5 to ground. The compensation capacitor
7
LT1222
U
TYPICAL APPLICATIONS N
VOS Null Loop
Two Op Amp Instrumemtation Amplifier
R5
220Ω
R4
10k
150k
150k
1
R1
10k
R2
1k
V
IN
+
8
V
A
OUT
= 1001
LT1222
V
–
+
R3
1k
–
25k
–
+
LT1220
V
LT1222
–
IN
OUT
10k
10k
100pF
25Ω
V
+
GAIN = [R4/R3][1 + (1/2)(R2/R1 + R3/R4) + (R2 + R3)/R5] = 102
TRIM R5 FOR GAIN
–
LT1097
100pF
TRIM R1 FOR COMMON-MODE REJECTION
LT1222 • TA03
BW = 3MHz
LT1222 • TA04
+
W
W
SI PLIFIED SCHE ATIC
+
V
7
NULL
1
8
BIAS 2
BIAS 1
COMP
5
6
OUT
–IN
2
+IN
3
4
–
V
LT1222 • SS
8
LT1222
U
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
H8 Package
8-Lead TO-5 Metal Can
0.335 – 0.370
(8.509 – 9.398)
DIA
0.305 – 0.335
(7.747 – 8.509)
0.040
(1.016)
MAX
0.027 – 0.045
(0.686 – 1.143)
45°TYP
0.027 – 0.034
(0.686 – 0.864)
0.050
(1.270)
MAX
0.165 – 0.185
(4.191 – 4.699)
0.200 – 0.230
(5.080 – 5.842)
REFERENCE
PLANE
SEATING
PLANE
GAUGE
PLANE
BSC
0.500 – 0.750
(12.700 – 19.050)
0.010 – 0.045
(0.254 – 1.143)
0.110 – 0.160
(2.794 – 4.064)
INSULATING
STANDOFF
0.016 – 0.021
(0.406 – 0.533)
NOTE: LEAD DIAMETER IS UNCONTROLLED BETWEEN
THE REFERENCE PLANE AND SEATING PLANE.
H8(5) 0592
J8 Package
8-Lead Ceramic Dip
0.405
(10.287)
MAX
CORNER LEADS OPTION
(4 PLCS)
0.005
(0.127)
MIN
6
5
4
8
7
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.025
(0.635)
RAD TYP
0.220 – 0.310
(5.588 – 7.874)
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
1
2
3
0.200
(5.080)
MAX
0.300 BSC
(0.762 BSC)
0.015 – 0.060
(0.381 – 1.524)
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
0.045 – 0.068
(1.143 – 1.727)
0.385 ± 0.025
(9.779 ± 0.635)
0.125
3.175
MIN
0.100 ± 0.010
0.014 – 0.026
(2.540 ± 0.254)
(0.360 – 0.660)
J8 0694
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS.
9
LT1222
U
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
N8 Package
8-Lead Plastic Dip
0.400*
(10.160)
MAX
8
7
6
5
4
0.255 ± 0.015*
(6.477 ± 0.381)
1
2
3
0.130 ± 0.005
0.300 – 0.325
0.045 – 0.065
(3.302 ± 0.127)
(1.143 – 1.651)
(7.620 – 8.255)
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
0.125
0.015
(0.380)
MIN
(3.175)
MIN
+0.025
0.045 ± 0.015
(1.143 ± 0.381)
0.325
–0.015
+0.635
8.255
(
)
–0.381
0.100 ± 0.010
(2.540 ± 0.254)
0.018 ± 0.003
(0.457 ± 0.076)
N8 0694
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTURSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm).
10
LT1222
U
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
S8 Package
8-Lead Plastic SOIC
0.189 – 0.197*
(4.801 – 5.004)
7
5
8
6
0.150 – 0.157*
(3.810 – 3.988)
0.228 – 0.244
(5.791 – 6.197)
1
3
4
2
0.010 – 0.020
(0.254 – 0.508)
× 45°
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
0.008 – 0.010
(0.203 – 0.254)
0°– 8° TYP
0.016 – 0.050
0.406 – 1.270
0.050
(1.270)
BSC
0.014 – 0.019
(0.355 – 0.483)
SO8 0294
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
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 represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
11
LT1222
U.S. Area Sales Offices
SOUTHWEST REGION
Linear Technology Corporation
22141 Ventura Blvd.
SOUTHEAST REGION
Linear Technology Corporation
17060 Dallas Parkway
Suite 208
NORTHEAST REGION
Linear Technology Corporation
3220 Tillman Drive, Suite 120
Bensalem, PA 19020
Suite 206
Woodland Hills, CA 91364
Phone: (818) 703-0835
FAX: (818) 703-0517
Dallas, TX 75248
Phone: (214) 733-3071
FAX: (214) 380-5138
Phone: (215) 638-9667
FAX: (215) 638-9764
Linear Technology Corporation
266 Lowell St., Suite B-8
Wilmington, MA 01887
Phone: (508) 658-3881
FAX: (508) 658-2701
NORTHWEST REGION
Linear Technology Corporation
782 Sycamore Dr.
Milpitas, CA 95035
Phone: (408) 428-2050
FAX: (408) 432-6331
CENTRAL REGION
Linear Technology Corporation
Chesapeake Square
229 Mitchell Court, Suite A-25
Addison, IL 60101
Phone: (708) 620-6910
FAX: (708) 620-6977
International Sales Offices
KOREA
FRANCE
TAIWAN
Linear Technology Korea Branch
Namsong Building, #505
Itaewon-Dong 260-199
Yongsan-Ku, Seoul
Korea
Linear Technology S.A.R.L.
Immeuble "Le Quartz"
58 Chemin de la Justice
92290 Chatenay Malabry
France
Linear Technology Corporation
Rm. 801, No. 46, Sec. 2
Chung Shan N. Rd.
Taipei, Taiwan, R.O.C.
Phone: 886-2-521-7575
FAX: 886-2-562-2285
Phone: 82-2-792-1617
FAX: 82-2-792-1619
Phone: 33-1-41079555
FAX: 33-1-46314613
UNITED KINGDOM
SINGAPORE
GERMANY
Linear Technology (UK) Ltd.
The Coliseum, Riverside Way
Camberley, Surrey GU15 3YL
United Kingdom
Linear Technology Pte. Ltd.
507 Yishun Industrial Park A
Singapore 2776
Linear Techonolgy GmbH
Untere Hauptstr. 9
D-85386 Eching
Phone: 65-753-2692
FAX: 65-754-4113
Germany
Phone: 49-89-3197410
FAX: 49-89-3194821
Phone: 44-276-677676
FAX: 44-276-64851
JAPAN
Linear Technology KK
5F YZ Bldg.
4-4-12 Iidabashi, Chiyoda-Ku
Tokyo, 102 Japan
Phone: 81-3-3237-7891
FAX: 81-3-3237-8010
World Headquarters
Linear Technology Corporation
1630 McCarthy Blvd.
Milpitas, CA 95035-7487
Phone: (408) 432-1900
FAX: (408) 434-0507
0794
LT/GP 0894 5K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1992
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
12
●
●
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
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