ADA4853-3YCPZ-R2 [ADI]
Low Power, Rail-to-Rail Output, Video Op Amp with Ultralow Power Disable; 低功耗，轨到轨输出，视频运算放大器，具有超低功耗禁用
| 型号： | ADA4853-3YCPZ-R2 |
| 厂家： | 
ADI |
| 描述： | Low Power, Rail-to-Rail Output, Video Op Amp with Ultralow Power Disable |
| 文件： | 总16页 (文件大小：539K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Low Power, Rail-to-Rail Output,
Video Op Amp with Ultralow Power Disable
ADA4853-1/ADA4853-2/ADA4853-3
FEATURES
PIN CONFIGURATIONS
Ultralow power-down current: 0.1 μA
Low quiescent current: 1.4 mA/amplifier
Ideal for standard definition video
High speed
100 MHz, −3 dB bandwidth
120 V/μs slew rate
ADA4853-2
V
1
1
2
3
4
12 +V
OUT
S
–IN1
+IN1
11
V
2
–
+
OUT
ADA4853-1
V
1
2
3
6
5
4
+V
S
OUT
10 –IN2
+IN2
–
+
–V
S
9
–V
S
POWER DOWN
–IN
+IN
0.5 dB flatness: 22 MHz
Differential gain: 0.20%
TOP VIEW
(Not to Scale)
NC = NO CONNECT
Differential phase: 0.10°
Single-supply operation
Figure 1. 6-Lead SC70
Figure 2. 16-Lead LFCSP_VQ
ADA4853-3
Rail-to-rail output
Output swings to within 200 mV of either rail
Low voltage offset: 1 mV
1
2
3
4
5
6
7
14
13
12
11
10
9
DISABLE 1
DISABLE 2
DISABLE 3
V
OUT
–IN
+IN
–V
–
+
ADA4853-3
Wide supply range: 2.65 V to 5 V
+V
S
+
–
S
DISABLE 1
DISABLE 2
DISABLE 3
1
2
3
4
12 –V
S
+IN
–IN
+IN
–IN
11 +IN
10 –IN
+
–
–
–
+
+
APPLICATIONS
8
V
V
OUT
+V
S
OUT
9
V
OUT
Portable multimedia players
Video cameras
+
–
Digital still cameras
Consumer video
Figure 3. 16-Lead LFCSP_VQ
Figure 4. 16-Lead TSSOP
GENERAL DESCRIPTION
The ADA4853-1/ADA4853-2/ADA4853-3 are low power, low
cost, high speed, rail-to-rail output op amps with ultralow
power disable that are ideal for portable consumer electronics.
Despite their low price, the ADA4853-1/ADA4853-2/ADA4853-3
provide excellent overall performance and versatility. The
100 MHz, −3 dB bandwidth and 120 V/μs slew rate make these
amplifiers well-suited for many general-purpose, high speed
applications.
With their combination of low price, excellent differential gain
(0.2%), differential phase (0.10°), and 0.5 dB flatness out to
22 MHz, these amplifiers are ideal for video applications.
The ADA4853-1 is available in a 6-lead SC70, the ADA4853-2 is
available in a 16-lead LFCSP_VQ, and the ADA4853-3 is available
in both a 16-lead LFCSP_VQ and a 14-lead TSSOP. The
ADA4853-1 temperature range is −40°C to +85°C, while the
ADA4853-2/ADA4853-3 temperature range is −40°C to +105°C.
6.5
The ADA4853-1/ADA4853-2/ADA4853-3 voltage feedback op
amps are designed to operate at supply voltages as low as 2.65 V
and up to 5 V using only 1.4 mA of supply current per amplifier.
To further reduce power consumption, the amplifiers are equipped
with a power-down mode that lowers the supply current to less
than 1.5 μA maximum, making them ideal in battery-powered
applications.
0.1V p-p
V
R
= 5V
= 150Ω
S
L
6.4
6.3
G = +2
6.2
6.1
6.0
2.0V p-p
5.9
5.8
The ADA4853-1/ADA4853-2/ADA4853-3 provide users with a
true single-supply capability, allowing input signals to extend
200 mV below the negative rail and to within 1.2 V of the
positive rail. On the output, the amplifiers can swing within
200 mV of either supply rail.
5.7
5.6
5.5
0.1
1
10
40
FREQUENCY (MHz)
Figure 5. 0.5 dB Flatness Frequency Response
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2006 Analog Devices, Inc. All rights reserved.
ADA4853-1/ADA4853-2/ADA4853-3
TABLE OF CONTENTS
Features .............................................................................................. 1
Typical Performance Characteristics ..............................................6
Circuit Description......................................................................... 14
Headroom Considerations........................................................ 14
Overload Behavior and Recovery ............................................ 14
Applications..................................................................................... 15
Single-Supply Video Amplifier................................................. 15
Power Supply Bypassing............................................................ 15
Layout .......................................................................................... 15
Outline Dimensions....................................................................... 16
Ordering Guide .......................................................................... 16
Applications....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Specifications with 3 V Supply ................................................... 3
Specifications with 5 V Supply ................................................... 4
Absolute Maximum Ratings............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
REVISION HISTORY
10/06—Rev. A to Rev. B
Changes to Figure 7...........................................................................6
Changes to Figure 11 Caption, Figure 12, Figure 13,
Added ADA4853-3.............................................................Universal
Added 16-Lead LFCSP_VQ ..............................................Universal
Added 14-Lead TSSOP ......................................................Universal
Changes to Features.......................................................................... 1
Changes to DC Performance, Input Characteristics, and Power
Supply Sections ................................................................................. 3
Changes to DC Performance, Input Characteristics, and Power
Supply Sections ................................................................................. 4
Changes to Figure 20........................................................................ 8
Changes to Figure 49...................................................................... 13
Updated Outline Dimensions....................................................... 16
Changes to Ordering Guide .......................................................... 16
and Figure 16......................................................................................7
Changes to Figure 17 and Figure 19................................................8
Inserted Figure 21; Renumbered Sequentially ..............................8
Inserted Figure 25; Renumbered Sequentially ..............................9
Changes to Figure 28.........................................................................9
Changes to Figure 31 through Figure 35..................................... 10
Changes to Figure 37, Figure 39 through Figure 42 .................. 11
Inserted Figure 43 and Figure 46.................................................. 12
Inserted Figure 47........................................................................... 13
Changes to Circuit Description Section...................................... 13
Changes to Headroom Considerations Section ......................... 13
Changes to Figure 48...................................................................... 14
Updated Outline Dimensions....................................................... 15
Changes to Ordering Guide.......................................................... 15
7/06—Rev. 0 to Rev. A
Added ADA4853-2.............................................................Universal
Changes to Features and General Description ............................. 1
Changes to Table 1............................................................................ 3
Changes to Table 2............................................................................ 4
Changes to Table 3............................................................................ 5
1/06—Revision 0: Initial Version
Rev. B | Page 2 of 16
ADA4853-1/ADA4853-2/ADA4853-3
SPECIFICATIONS
SPECIFICATIONS WITH 3 V SUPPLY
TA = 25°C, RF = 1 kΩ, RG = 1 kΩ for G = +2, RL = 150 Ω, unless otherwise noted.
Table 1.
Parameter
Conditions
Min
Typ
Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth
G = +1, VO = 0.1 V p-p
G = +2, VO = 2 V p-p
G = +2, VO = 2 V p-p, RL = 150 Ω
VO = 2 V step
90
32
22
45
MHz
MHz
MHz
ns
Bandwidth for 0.5 dB Flatness
Settling Time to 0.1%
Slew Rate
G = +2, VO = 2 V step
88
100
V/μs
NOISE/DISTORTION PERFORMANCE
Differential Gain
Differential Phase
Input Voltage Noise
Input Current Noise
Crosstalk
RL = 150 Ω
RL = 150 Ω
f = 100 kHz
f = 100 kHz
0.20
0.10
22
2.2
−66
%
Degrees
nV/√Hz
pA/√Hz
dB
G = +2, VO = 2 V p-p, RL = 150 Ω, f = 5 MHz
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Bias Current Drift
Input Bias Offset Current
Open-Loop Gain
1
4
mV
μV/°C
μA
nA/°C
nA
dB
1.6
1.0
4
50
80
1.7
VO = 0.5 V to 2.5 V
72
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Differential/common mode
0.5/20
0.6
−0.2 to +VCC − 1.2
MΩ
pF
V
Input Common-Mode Voltage Range
Input Overdrive Recovery Time (Rise/Fall) VIN = −0.5 V to +3.5 V, G = +1
40
−85
ns
dB
Common-Mode Rejection Ratio
POWER-DOWN
VCM = 0 V to 1 V
−69
Power-Down Input Voltage
Turn-Off Time
Turn-On Time
Power-down
1.2
1.4
120
V
μs
ns
Power-Down Bias Current
Enabled
Power-Down
Power-down = 3.0 V
Power-down = 0 V
25
0.01
30
μA
μA
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time
Output Voltage Swing
Short-Circuit Current
POWER SUPPLY
VIN = −0.25 V to +1.75 V, G = +2
RL = 150 Ω
Sinking/sourcing
70
ns
V
mA
0.3 to 2.7 0.15 to 2.88
150/120
Operating Range
Quiescent Current
Quiescent Current (Power-Down)
Positive Power Supply Rejection
Negative Power Supply Rejection
2.65
1.3
5
1.6
1.5
V
mA/amplifier
Power-down = low
+VS = +1.5 V to +2.5 V, −VS = −1.5 V
−VS = −1.5 V to −2.5 V, +VS = +1.5 V
0.1
μA
dB
dB
−76
−77
−86
−88
Rev. B | Page 3 of 16
ADA4853-1/ADA4853-2/ADA4853-3
SPECIFICATIONS WITH 5 V SUPPLY
TA = 25°C, RF = 1 kΩ, RG = 1 kΩ for G = +2, RL = 150 Ω, unless otherwise noted.
Table 2.
Parameter
Conditions
Min
Typ
Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth
G = +1, VO = 0.1 V p-p
G = +2, VO = 2 V p-p
G = +2, VO = 2 V p-p
VO = 2 V step
100
35
22
54
120
MHz
MHz
MHz
ns
Bandwidth for 0.5 dB Flatness
Settling Time to 0.1%
Slew Rate
G = +2, VO = 2 V step
93
V/μs
NOISE/DISTORTION PERFORMANCE
Differential Gain
Differential Phase
Input Voltage Noise
Input Current Noise
Crosstalk
RL = 150 Ω
RL = 150 Ω
f = 100 kHz
f = 100 kHz
0.22
0.10
22
2.2
−66
%
Degrees
nV/√Hz
pA/√Hz
dB
G = +2, VO = 2 V p-p, RL = 150 Ω, f = 5 MHz
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Bias Current Drift
Input Bias Offset Current
Open-Loop Gain
1
4.1
1.7
mV
μV/°C
μA
nA/°C
nA
dB
1.6
1.0
4
60
80
VO = 0.5 V to 4.5 V
72
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Differential/common mode
0.5/20
0.6
−0.2 to
MΩ
pF
V
Input Common-Mode Voltage Range
+VCC − 1.2
Input Overdrive Recovery Time (Rise/Fall)
Common-Mode Rejection Ratio
POWER-DOWN
VIN = −0.5 V to +5.5 V, G = +1
VCM = 0 V to 3 V
40
−88
ns
dB
−71
Power-Down Input Voltage
Turn-Off Time
Turn-On Time
Power-down
1.2
1.5
120
V
μs
ns
Power-Down Bias Current
Enabled
Power-Down
Power-down = 5 V
Power-down = 0 V
40
0.01
50
μA
μA
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time
Output Voltage Swing
Short-Circuit Current
VIN = −0.25 V to +2.75 V, G = +2
RL = 75 Ω
Sinking/sourcing
55
0.1 to 4.8
160/120
ns
V
mA
0.55 to 4.5
2.65
POWER SUPPLY
Operating Range
5
V
Quiescent Current
1.4
0.1
−80
−80
1.8
1.5
mA/amplifier
Quiescent Current (Power-Down)
Positive Power Supply Rejection
Negative Power Supply Rejection
Power-down = low
+VS = +2.5 V to +3.5 V, −VS = −2.5 V
−VS = −2.5 V to −3.5 V, +VS = +2.5 V
μA
dB
dB
−75
−75
Rev. B | Page 4 of 16
ADA4853-1/ADA4853-2/ADA4853-3
ABSOLUTE MAXIMUM RATINGS
The power dissipated in the package (PD) for a sine wave and a
resistor load is the total power consumed from the supply
minus the load power.
Table 3.
Parameter
Supply Voltage
Power Dissipation
Common-Mode Input Voltage
Differential Input Voltage
Storage Temperature Range
Operating Temperature Range
6-Lead SC70
16-Lead LFCSP_VQ
14-Lead TSSOP
Lead Temperature
Rating
5.5 V
See Figure 6
−VS − 0.2 V to +VS − 1.2 V
VS
−65°C to +125°C
PD = Total Power Consumed − Load Power
2
VOUT
PD =
VSUPPLY VOLTAGE × ISUPPLY CURRENT
)
–
RL
RMS output voltages should be considered.
Airflow increases heat dissipation, effectively reducing θJA.
In addition, more metal directly in contact with the package
leads and through holes under the device reduces θJA.
−40°C to +85°C
−40°C to +105°C
−40°C to +105°C
JEDEC J-STD-20
150°C
Figure 6 shows the maximum safe power dissipation in the
package vs. the ambient temperature for the 6-lead SC70
(430°C/W), the 14-lead TSSOP (120°C/W), and the 16-lead
LFCSP_VQ (63°C/W) on a JEDEC standard 4-layer board. θJA
values are approximations.
Junction Temperature
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
3.0
2.5
2.0
THERMAL RESISTANCE
LFCSP
θJA is specified for the worst-case conditions, that is, θJA is
specified for the device soldered in the circuit board for surface-
mount packages.
1.5
TSSOP
1.0
Table 4.
0.5
Package Type
θJA
430
63
Unit
°C/W
°C/W
°C/W
SC70
–35
6-Lead SC70
16-Lead LFCSP_VQ
14-Lead TSSOP
0
–55
–15
5
25
45
65
85
105
125
AMBIENT TEMPERATURE (°C)
120
Figure 6. Maximum Power Dissipation vs. Temperature for a 4-Layer Board
Maximum Power Dissipation
ESD CAUTION
The maximum safe power dissipation for the ADA4853-1/
ADA4853-2/ADA4853-3 is limited by the associated rise in
junction temperature (TJ) on the die. At approximately 150°C,
which is the glass transition temperature, the plastic changes its
properties. Even temporarily exceeding this temperature limit
can change the stresses that the package exerts on the die,
permanently shifting the parametric performance of the
amplifiers. Exceeding a junction temperature of 150°C for an
extended period can result in changes in silicon devices,
potentially causing degradation or loss of functionality.
Rev. B | Page 5 of 16
ADA4853-1/ADA4853-2/ADA4853-3
TYPICAL PERFORMANCE CHARACTERISTICS
2
5
4
V
R
V
= 5V
= 150ꢀ
C = 10pF/25ꢀ SNUB
L
S
ADA4853-3
LFCSP
L
C
= 10pF
L
1
0
= 0.1V p-p
OUT
3
G = +1
G = –1*
C
= 5pF
L
2
1
G = +2*
–1
–2
–3
–4
–5
–6
0
G = +10*
C
= 0pF
L
–1
–2
–3
–4
–5
–6
*ADA4853-1/ADA4853-2
R
SNUB
V
R
V
= 5V
= 150ꢀ
S
C
R
L
L
L
= 0.1V p-p
OUT
0.1
1
10
FREQUENCY (MHz)
100 200
0.1
1
10
FREQUENCY (MHz)
100 200
Figure 10. Small Signal Frequency Response for Various Capacitive Loads
Figure 7. Small Signal Frequency Response for Various Gains
3
6.5
V = 5V
S
0.1V p-p
V
= 5V
R
= 75ꢀ
S
L
R
= 150ꢀ
6.4
6.3
L
G = +1
= 0.1V p-p
2
1
G = +2
V
OUT
6.2
6.1
6.0
0
R
= 1kꢀ
L
–1
2.0V p-p
R
= 150ꢀ
L
–2
–3
–4
5.9
5.8
5.7
5.6
5.5
–5
–6
0.1
1
10
100 200
0.1
1
10
40
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 8. Small Signal Frequency Response for Various Loads
Figure 11. 0.5 dB Flatness Response for Various Output Voltages
4
8.0
V
R
= 5V
= 150ꢀ
V
= 3V
S
S
G = +1
7.8
7.6
7.4
7.2
7.0
6.8
6.6
6.4
6.2
6.0
5.8
5.6
L
3
2
1
R
V
= 150ꢀ
L
G = +2
= 0.1V p-p
OUT
0.1V p-p
V
= 5V
S
0
–1
–2
–3
–4
2V p-p
–5
–6
0.1
1
10
100 200
0.1
1
10
FREQUENCY (MHz)
100
1000
FREQUENCY (MHz)
Figure 12. ADA4853-3 LFCSP_VQ Flatness Response for Various Output Voltages
Figure 9. Small Signal Frequency Response for Various Supplies
Rev. B | Page 6 of 16
ADA4853-1/ADA4853-2/ADA4853-3
1
4
V
R
V
= 5V
= 150ꢀ
+85°C
S
G = –1
L
3
2
+25°C
= 0.1V p-p
OUT
0
–1
–2
–3
–4
G = +1
G = +2
G = +10
1
0
–40°C
–1
–2
–3
–4
V
R
V
= 5V
= 150ꢀ
–5
–6
S
–5
–6
L
= 2V p-p
OUT
0.1
1
10
FREQUENCY (MHz)
100 200
0.1
1
10
FREQUENCY (MHz)
100 200
Figure 13. Large Signal Frequency Response for Various Gains
Figure 16. Small Signal Frequency Response for Various Temperatures
7
6
250
V
R
= 5V
= 150ꢀ
S
L
G = +2
200
150
100
50
R = 75ꢀ
L
NEGATIVE SLEW RATE
R = 1kꢀ
L
5
4
3
2
R = 150ꢀ
L
POSITIVE SLEW RATE
V
V
= 5V
1
0
S
= 2V p-p
OUT
G = +2
0
0.1
1
10
FREQUENCY (MHz)
100 200
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
OUTPUT VOLTAGE STEP (V)
Figure 14. Large Signal Frequency Response for Various Loads
Figure 17. Slew Rate vs. Output Voltage
5
140
0
V
R
= 3V
= 150ꢀ
= 0.1V p-p
V = 5V
S
+85°C
S
R
= 150ꢀ
4
L
L
+25°C
120
100
80
–30
V
OUT
G = +1
3
2
–60
PHASE
GAIN
1
0
–90
–40°C
–120
–150
–180
–210
–240
60
–1
–2
40
–3
–4
–5
–6
20
0
–20
100
0.1
1
10
100 200
1k
10k
100k
1M
10M
100M
FREQUENCY (MHz)
FREQUENCY (Hz)
Figure 15. Small Signal Frequency Response for Various Temperatures
Figure 18. Open-Loop Gain and Phase vs. Frequency
Rev. B | Page 7 of 16
ADA4853-1/ADA4853-2/ADA4853-3
–20
10M
1M
V
= 5V
V = 5V
S
G = +1
S
–30
–40
–50
–60
–70
–80
–90
ADA4853-1/
ADA4853-2
100k
10k
1k
ADA4853-3
100
10
100
1k
10k
100k
1M
10M
100M
100M
100M
100
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 19. Common-Mode Rejection vs. Frequency
Figure 22. Output Impedance vs. Frequency Disabled
0
–40
–50
V
= 5V
G = +2
S
OUT
S
V
V
= 3V
GAIN = +2
RTO
–10
= 2V p-p
R
= 150ꢀ HD2
L
–20
–30
–40
–50
–60
–70
–80
–90
–100
–PSR
R
= 150ꢀ HD3
L
–60
–70
–80
–90
R
= 1kꢀ HD3
L
+PSR
R
= 1kꢀ HD2
L
–100
–110
0.1
1
10
100
1k
10k
100k
1M
10M
FREQUENCY (MHz)
FREQUENCY (Hz)
-
Figure 20. Power Supply Rejection vs. Frequency
Figure 23. Harmonic Distortion vs. Frequency
1000
100
10
–40
–50
V
= 5V
S
G = +2
G = +1
V
V
= 5V
OUT
S
R
= 150ꢀ HD3
L
= 2V p-p
–60
–70
R
= 150ꢀ HD2
L
R
= 1kꢀ HD3
L
–80
1
–90
R
= 1kꢀ HD2
L
–100
–110
–120
0.1
0.01
0.1
1
10
100
1k
10k
100k
1M
10M
FREQUENCY (MHz)
FREQUENCY (Hz)
Figure 21. Output Impedance vs. Frequency Enabled
Figure 24. Harmonic Distortion vs. Frequency
Rev. B | Page 8 of 16
ADA4853-1/ADA4853-2/ADA4853-3
–40
–50
–60
–70
–80
–90
2.60
G = +1
G = +2
= 150ꢀ
25ns/DIV
V
V
= 5V
S
OUT
R
2.58
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
2.40
L
= 2V p-p
R
= 150ꢀ HD3
L
V
= 3V
S
R
= 150ꢀ HD2
L
V
= 5V
S
R
= 75ꢀ HD2
L
R
= 75ꢀ HD3
L
–100
–110
–120
R
= 1kꢀ HD2
L
R
= 1kꢀ HD3
L
0.1
1
10
FREQUENCY (MHz)
Figure 25. Harmonic Distortion vs. Frequency
Figure 28. Small Signal Pulse Response for Various Supplies
–30
–40
–50
–60
–70
–80
–90
–100
2.60
2.58
G = +2
= 2V p-p
V
OUT
= 75ꢀ
R
L
G = +1; C = 5pF
L
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
2.40
V
= 3V HD3
G = +2; C = 0pF, 5pF, 10pF
L
S
V
= 5V HD2
S
V
= 3V HD2
S
V
= 5V HD3
S
V
R
= 5V
= 150ꢀ
S
L
25ns/DIV
0.1
1
10
FREQUENCY (MHz)
Figure 29. Small Signal Pulse Response for Various Capacitive Loads
Figure 26. Harmonic Distortion vs. Frequency
–40
–50
–60
–70
–80
–90
3.75
G = +1
G = +2
V
R
= 5V
= 150ꢀ
5V
S
L
R
= 150ꢀ
3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
L
25ns/DIV
V
= 3V, 5V
S
f = 100kHz
2V
GND
–100
–110
–120
HD2
HD3
0
1
2
3
4
V
(V p-p)
OUT
Figure 27. Harmonic Distortion for Various Output Voltages
Figure 30. Large Signal Pulse Response for Various Supplies
Rev. B | Page 9 of 16
ADA4853-1/ADA4853-2/ADA4853-3
3.75
1000
100
10
G = +2
V
= 5V
3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
S
R
= 150ꢀ
L
25ns/DIV
C
= 0pF, 20pF
L
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 31. Large Signal Pulse Response for Various Capacitive Loads
Figure 34. Voltage Noise vs. Frequency
5.5
100
10
1
V
= 5V
S
2 × INPUT
G = +2
= 150ꢀ
R
L
4.5
f = 1MHz
OUTPUT
3.5
2.5
1.5
0.5
–0.5
10
100
1k
10k
100k
1M
10M
100ns/DIV
FREQUENCY (Hz)
Figure 32. Output Overdrive Recovery
Figure 35. Current Noise vs. Frequency
5.5
4.5
20
18
16
14
12
10
8
V
= 5V
V
= 5V
S
S
INPUT
G = +1
= 150ꢀ
N = 155
x = –0.370mV
σ = 0.782
R
L
f = 1MHz
OUTPUT
3.5
2.5
1.5
6
4
0.5
2
–0.5
0
–4
–3
–2
–1
0
1
2
3
4
100ns/DIV
V
(mV)
OFFSET
Figure 36. VOS Distribution
Figure 33. Input Overdrive Recovery
Rev. B | Page 10 of 16
ADA4853-1/ADA4853-2/ADA4853-3
–0.50
–0.6
–0.8
V
= 5V
S
–0.52
–0.54
–0.56
–0.58
–0.60
–0.62
–0.64
–0.66
–0.68
V
= 5V
S
–1.0
–1.2
+I
B
–1.4
–1.6
V
= 3V
S
–I
B
–1.8
–2.0
–1.0 –0.5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
(V)
–40
–20
0
20
40
60
80
V
CM
TEMPERATURE (°C)
Figure 37. VOS vs. Common-Mode Voltage
Figure 40. Input Bias Current vs. Temperature
3.0
2.8
2.6
1.5
V
= 5V, T = +85°C
S
V
= 3V
S
LOAD RESISTANCE TIED
TO MIDSUPPLY
POSITIVE SWING
V
= 5V, T = –40°C
S
V
= 5V, T = +25°C
S
1.0
0.5
0
V
= 3V, T = –40°C
S
V
= 3V, T = +25°C
S
2.4
0.6
V
= 3V, T = +85°C
S
0.4
0.2
0
NEGATIVE SWING
10
0
0.5
1.0
1.5
2.0 2.5
3.0
3.5
4.0 4.5
5.0
1
100
1k
10k
POWER DOWN VOLTAGE (V)
LOAD RESISTANCE (ꢀ)
POWER DOWN
Figure 41. Output Voltage vs. Load Resistance
Figure 38. Supply Current vs.
Voltage
5.0
4.8
4.6
–0.6
–0.7
V
= 5V
S
LOAD RESISTANCE TIED
TO MIDSUPPLY
POSITIVE SWING
V
= 5V
S
V
= 3V
S
4.4
0.6
–0.8
–0.9
–1.0
0.4
0.2
0
NEGATIVE SWING
100
10
1k
10k
–50
–25
0
25
50
75
100
TEMPERATURE (°C)
LOAD RESISTANCE (ꢀ)
Figure 39. Input Offset Voltage vs. Temperature
Figure 42. Output Voltage vs. Load Resistance
Rev. B | Page 11 of 16
ADA4853-1/ADA4853-2/ADA4853-3
3.0
3.0
3.1
2.9
2.8
2.7
2.6
2.5
V
= 3V
V
S
OUTPUT
V
= 5V
S
L
2.9
2.8
2.7
2.6
R
= 150ꢀ
POSITIVE SWING
2V
INPUT
+0.001
(+0.1%)
2V
V
INPUT – OUTPUT
2.5
0.5
–0.001
2.4
2.3
2.2
0.4
0.3
0.2
0.1
0
(–0.1%)
NEGATIVE SWING
2.1
2.0
1.9
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
TIME (ns)
0
5
10
15
20
25
30
35
40
45
50
LOAD CURRENT (mA)
Figure 43. Output Voltage vs. Load Current
Figure 46. 0.1% Settling Time
5.0
4.9
4.8
4.7
4.6
6
3
2
V
= 5V
S
POWER DOWN
V
5
4
3
2
1
OUT
ADA4853-3
POSITIVE SWING
V
OUT
ADA4853-1/
ADA4853-2
4.5
0.5
1
0
0.4
0.3
0.2
0.1
0
NEGATIVE SWING
G = +2
0
V
IN
= 5V
= 100kHz
S
f
–1
0
1
2
3
4
5
6
7
8
9
10
0
5
10
15
20
25
30
35
40
45
50
TIME (µs)
LOAD CURRENT (mA)
Figure 44. Output Voltage vs. Load Current
Figure 47. Enable/Disable Time
0.25
0.20
0.15
0.10
0.05
0
–40
R
= 150ꢀ
V
= 5V
L
S
G = +2
R
= 150ꢀ
= 2V p-p
+V
L
SAT
–50
–60
V
OUT
V
= 5V
S
V
2 TO V
OUT
1
OUT
ADA4853-2
–70
V
1 TO V
ADA4853-2
2
OUT
OUT
–V
V
= 3V
SAT
S
–80
ADA4853-3
ALL HOSTILE
–90
–100
100k
–40
–20
0
20
40
60
80
1M
10M
FREQUENCY (Hz)
100M 200M
TEMPERATURE (°C)
Figure 45. Output Saturation Voltage vs. Temperature for Various Supplies
Figure 48. Crosstalk vs. Frequency
Rev. B | Page 12 of 16
ADA4853-1/ADA4853-2/ADA4853-3
0
–20
V
R
V
= 5V
S
= 150ꢀ
= 1V p-p
L
IN
G = +2
–40
–60
–80
–100
0.1
1
10
100 200
FREQUENCY (MHz)
Figure 49. Input-to-Output Isolation, Chip Disabled
Rev. B | Page 13 of 16
ADA4853-1/ADA4853-2/ADA4853-3
CIRCUIT DESCRIPTION
The ADA4853-1/ADA4853-2/ADA4853-3 feature a high slew
rate input stage that is a true single-supply topology capable of
sensing signals at or below the minus supply rail. The rail-to-
rail output stage can pull within 100 mV of either supply rail
when driving light loads and within 200 mV when driving
150 Ω. High speed performance is maintained at supply
voltages as low as 2.65 V.
For signals approaching the negative supply and inverting gain
and high positive gain configurations, the headroom limit is the
output stage. The ADA4853-1/ADA4853-2/ADA4853-3 use a
common-emitter output stage. This output stage maximizes the
available output range, limited by the saturation voltage of the
output transistors. The saturation voltage increases with the
drive current that the output transistor is required to supply due
to the output transistor’s collector resistance.
HEADROOM CONSIDERATIONS
As the saturation point of the output stage is approached, the
output signal shows increasing amounts of compression and
clipping. As in the input headroom case, higher frequency
signals require a bit more headroom than the lower frequency
signals. Figure 27 illustrates this point by plotting the typical
distortion vs. the output amplitude.
The ADA4853-1/ADA4853-2/ADA4853-3 are designed for use
in low voltage systems. To obtain optimum performance, it is
useful to understand the behavior of the amplifiers as input and
output signals approach their headroom limits. The amplifiers’
input common-mode voltage range extends from the negative
supply voltage (actually 200 mV below this) to within 1.2 V of
the positive supply voltage.
OVERLOAD BEHAVIOR AND RECOVERY
Input
Exceeding the headroom limits is not a concern for any
inverting gain on any supply voltage, as long as the reference
voltage at the amplifiers’ positive input lies within the
amplifiers’ input common-mode range.
The specified input common-mode voltage of the ADA4853-1/
ADA4853-2/ADA4853-3 is 200 mV below the negative supply
to within 1.2 V of the positive supply. Exceeding the top limit
results in lower bandwidth and increased rise time. Pushing the
input voltage of a unity-gain follower to less than 1.2 V from the
positive supply leads to an increasing amount of output error as
well as increased settling time. The recovery time from input
voltages 1.2 V or closer to the positive supply is approximately
40 ns; this is limited by the settling artifacts caused by
The input stage is the headroom limit for signals approaching
the positive rail. Figure 50 shows a typical offset voltage vs. the
input common-mode voltage for the ADA4853-1/ADA4853-2/
ADA4853-3 on a 5 V supply. Accurate dc performance is
maintained from approximately 200 mV below the negative
supply to within 1.2 V of the positive supply. For high speed
signals, however, there are other considerations. As the
common-mode voltage gets within 1.2 V of positive supply, the
amplifier responds well but the bandwidth begins to drop as the
common-mode voltage approaches the positive supply. This can
manifest itself in increased distortion or settling time. Higher
frequency signals require more headroom than the lower
frequencies to maintain distortion performance.
transistors in the input stage coming out of saturation.
The amplifiers do not exhibit phase reversal, even for input
voltages beyond the voltage supply rails. Going more than
0.6 V beyond the power supplies turns on protection diodes
at the input stage, greatly increasing the current draw of the
devices.
–0.6
V
= 5V
S
–0.8
–1.0
–1.2
–1.4
–1.6
–1.8
–2.0
–1.0 –0.5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
(V)
V
CM
Figure 50. VOS vs. Common-Mode Voltage, VS = 5 V
Rev. B | Page 14 of 16
ADA4853-1/ADA4853-2/ADA4853-3
APPLICATIONS
SINGLE-SUPPLY VIDEO AMPLIFIER
LAYOUT
With low differential gain and phase errors and wide 0.5 dB
flatness, the ADA4853-1/ADA4853-2/ADA4853-3 are ideal
solutions for portable video applications. Figure 51 shows a
typical video driver set for a noninverting gain of +2, where
RF = RG = 1 kΩ. The video amplifier input is terminated into a
shunt 75 Ω resistor. At the output, the amplifier has a series
75 Ω resistor for impedance matching to the video load.
As is the case with all high speed applications, careful attention
to printed circuit board (PCB) layout details prevents associated
board parasitics from becoming problematic. The ADA4853-1/
ADA4853-2/ADA4853-3 can operate up to 100 MHz; therefore,
proper RF design techniques must be employed. The PCB
should have a ground plane covering all unused portions of
the component side of the board to provide a low impedance
return path. Removing the ground plane on all layers from the
area near and under the input and output pins reduces stray
capacitance. Signal lines connecting the feedback and gain
resistors should be kept as short as possible to minimize the
inductance and stray capacitance associated with these traces.
Termination resistors and loads should be located as close as
possible to their respective inputs and outputs. Input and output
traces should be kept as far apart as possible to minimize
coupling (crosstalk) through the board. Adherence to microstrip or
stripline design techniques for long signal traces (greater than 1
inch) is recommended. For more information on high speed
board layout, go to: www.analog.com to view A Practical Guide
to High-Speed Printed-Circuit-Board Layout.
When operating in low voltage, single-supply applications, the
input signal is only limited by the input stage headroom.
R
F
C1
2.2µF
+V
S
+
P
D
C2
0.01µF
R
G
75ꢀ CABLE
V
75ꢀ
OUT
U1
V
V
75ꢀ
IN
Figure 51. Video Amplifier
POWER SUPPLY BYPASSING
Attention must be paid to bypassing the power supply pins of
the ADA4853-1/ADA4853-2/ADA4853-3. High quality capacitors
with low equivalent series resistance (ESR), such as multilayer
ceramic capacitors (MLCCs), should be used to minimize
supply voltage ripple and power dissipation. A large, usually
tantalum, 2.2 μF to 47 μF capacitor located in proximity to the
ADA4853-1/ADA4853-2/ADA4853-3 is required to provide
good decoupling for lower frequency signals. The actual value is
determined by the circuit transient and frequency requirements.
In addition, 0.1 μF MLCC decoupling capacitors should be
located as close to each of the power supply pins as is physically
possible, no more than ⅛ inch away. The ground returns should
terminate immediately into the ground plane. Locating the bypass
capacitor return close to the load return minimizes ground loops
and improves performance.
Rev. B | Page 15 of 16
ADA4853-1/ADA4853-2/ADA4853-3
OUTLINE DIMENSIONS
5.10
5.00
4.90
2.20
2.00
1.80
14
8
7
2.40
2.10
1.80
6
1
5
2
4
3
1.35
1.25
1.15
4.50
4.40
4.30
6.40
BSC
PIN 1
1.30 BSC
0.65 BSC
1
1.00
0.90
0.70
0.40
0.10
PIN 1
1.10
0.80
0.65
BSC
1.05
1.00
0.80
0.20
0.09
1.20
0.46
0.36
0.26
0.75
0.60
0.45
MAX
8°
0°
0.30
0.15
0.22
0.08
0.15
0.05
0.10 MAX
SEATING
PLANE
0.30
0.19
SEATING
PLANE
COPLANARITY
0.10
0.10 COPLANARITY
COMPLIANT TO JEDEC STANDARDS MO-153-AB-1
COMPLIANT TO JEDEC STANDARDS MO-203-AB
Figure 53. 14-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-14)—Dimensions shown in millimeters
Figure 52. 6-Lead Thin Shrink Small Outline Transistor Package [SC70]
(KS-6)—Dimensions shown in millimeters
0.50
0.40
0.30
3.00
BSC SQ
0.60 MAX
PIN 1
INDICATOR
*
1.65
13
12
16
0.45
1
4
1.50 SQ
1.35
PIN 1
INDICATOR
2.75
BSC SQ
TOP
VIEW
EXPOSED
PAD
(BOTTOM VIEW)
9
8
5
0.50
BSC
0.25 MIN
1.50 REF
0.80 MAX
12° MAX
0.65 TYP
0.90
0.85
0.80
0.05 MAX
0.02 NOM
SEATING
PLANE
0.30
0.23
0.18
0.20 REF
*
COMPLIANT TO JEDEC STANDARDS MO-220-VEED-2
EXCEPT FOR EXPOSED PAD DIMENSION.
Figure 54. 16-Lead Lead Frame Chip Scale Package [LFCSP_VQ]
3 mm × 3 mm Body, Very Thin Quad (CP-16-3)—Dimensions shown in millimeters
ORDERING GUIDE
Temperature
Range
Ordering Package
Quantity Option
Model
Package Description
Branding
HEC
HEC
ADA4853-1AKSZ-R21
ADA4853-1AKSZ-R71
ADA4853-1AKSZ-RL1
ADA4853-2YCPZ-R21
ADA4853-2YCPZ-RL1
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
6-LeadThin Shrink Small OutlineTransistor Package (SC70)
6-LeadThin Shrink Small OutlineTransistor Package (SC70)
6-LeadThin Shrink Small OutlineTransistor Package (SC70)
250
KS-6
KS-6
KS-6
3,000
10,000
250
5,000
1,500
250
5,000
1,500
96
2,500
1,000
HEC
–40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ)
–40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ)
ADA4853-2YCPZ-RL71 –40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ)
CP-16-3
CP-16-3
CP-16-3
CP-16-3
CP-16-3
CP-16-3
RU-14
RU-14
RU-14
H0H
H0H
H0H
H0L
H0L
H0L
ADA4853-3YCPZ-R21
ADA4853-3YCPZ-RL1
ADA4853-3YCPZ-R71
ADA4853-3YRUZ1
ADA4853-3YRUZ-RL1
ADA4853-3YRUZ-R71
–40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ)
–40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ)
–40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ)
–40°C to +105°C 14-Lead Think Shrink Small Outline Package (TSSOP)
–40°C to +105°C 14-Lead Think Shrink Small Outline Package (TSSOP)
–40°C to +105°C 14-Lead Think Shrink Small Outline Package (TSSOP)
1 Z = Pb-free part.
©2006 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05884-0-10/06(B)
Rev. B | Page 16 of 16
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