Low Power, 3.6 MHz, Low Noise, Rail-toRail Output, Operational Amplifiers
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
1
ADA4692-2
VSY = ±2.5V
AV = –1
TA = 25°C
APPLICATIONS
0.1
THD + N (%)
Photodiode amplifiers
Sensor amplifiers
Portable medical and instrumentation
Portable audio: MP3s, PDAs, and smartphones
Communications
Low-side current sense
ADC drivers
Active filters
Sample-and-hold
RL = 600Ω
RL = 2kΩ
0.01
0.001
10
GENERAL DESCRIPTION
These amplifiers are ideal for a wide variety of applications.
Audio, filters, photodiode amplifiers, and charge amplifiers, all
benefit from this combination of performance and features.
Additional applications for these amplifiers include portable
consumer audio players with low noise and low distortion that
provide high gain and slew rate response over the audio band at
low power. Industrial applications with high impedance sensors,
such as pyroelectric and IR sensors, benefit from the high
impedance and low 0.5 pA input bias, low offset drift, and
enough bandwidth and response for low gain applications.
100
1k
10k
20k
FREQUENCY (Hz)
Figure 1. THD + Noise vs. Frequency
–80
–90
CHANNEL SEPARATION (dB)
The ADA4691-2/ADA4692-2 are dual and the ADA4691-4/
ADA4692-4 are the quad rail-to-rail output, single-supply
amplifiers featuring low power, wide bandwidth, and low noise.
The ADA4691-2 has two independent shutdown pins, allowing
further reduction in supply current. The ADA4691-4 is a quad
with dual shutdown pins each controlling a pair of amplifiers
and is available in the 16-lead LFCSP. The ADA4692-4 is a quad
version without shutdown.
07950-142
Low power: 180 μA typical
Very low input bias currents: 0.5 pA typical
Low noise: 16 nV/√Hz typical
3.6 MHz bandwidth
Offset voltage: 500 μV typical
Low offset voltage drift: 4 μV/°C maximum
Low distortion: 0.003% THD + N
2.7 V to 5 V single supply or ±1.35 V to ±2.5 V dual supply
Available in very small 2 mm × 2 mm LFCSP packages
The ADA4691/ADA4692 family is fully specified over the extended
industrial temperature range (−40°C to +125°C). The ADA4691-2
is available in a 10-lead LFCSP and a 9-ball WLCSP. The ADA4692-2
is available in an 8-lead SOIC and 8-lead LFCSP. The ADA4691-4 is
available in a 16-lead LFCSP. The ADA4692-4 is available in a 14-lead
TSSOP. For pin configurations, see the Pin Configurations section.
ADA4692-2
VSY = ±2.5V
VIN = 2.8V p-p
AV = +1
TA = 25°C
–100
–110
–120
–130
–140
100
1k
10k
100k
FREQUENCY (Hz)
07950-141
FEATURES
Figure 2. Channel Separation vs. Frequency
Table 1.
Single
Dual
Quad
Micropower
AD8613
AD8617
AD8619
Low Power
Low Power with Shutdown
ADA4692-2
ADA4692-4
ADA4691-2
ADA4691-4
Standard Op Amp With Shutdown
AD8591
AD8592
AD8594
High Bandwidth
AD8691
AD8692
AD8694
Rev. D
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 registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2009–2010 Analog Devices, Inc. All rights reserved.
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
TABLE OF CONTENTS
Features .............................................................................................. 1 ESD Caution...................................................................................6 Applications....................................................................................... 1 Pin Configurations ............................................................................7 General Description ......................................................................... 1 Typical Performance Characteristics ..............................................8 Revision History ............................................................................... 2 Shutdown Operation...................................................................... 16 Specifications..................................................................................... 3 Input Pin Characteristics........................................................... 16 Electrical Characteristics—2.7 V Operation ............................ 3 Input Threshold.......................................................................... 16 Electrical Characteristics—5 V Operation................................ 4 Outline Dimensions ....................................................................... 17 Absolute Maximum Ratings............................................................ 6 Ordering Guide .......................................................................... 20 Thermal Resistance ...................................................................... 6 REVISION HISTORY
11/10—Rev. C to Rev. D
Changed 5 V to 6 V in Endnote 2, Table 4 .................................... 6
12/09—Rev. B to Rev. C
Added ADA4691-4, 16-Lead LFCSP .......................... Throughout
Added Figure 1, Figure 2, and Table 1; Renumbered
Sequentially ....................................................................................... 1
Changes to Applications Section and General Description
Section................................................................................................ 1
Changes to Table 1............................................................................ 3
Changes to Table 2............................................................................ 4
Changes to Table 4............................................................................ 6
Updated Outline Dimensions ....................................................... 17
Changes to Ordering Guide .......................................................... 20
6/09—Rev. 0 to Rev. A
Added ADA4691-2, 10 Lead LFCSP........................... Throughout
Changes to Table 1.............................................................................3
Changes to Table 2.............................................................................4
Changes to Captions for Figure 40, Figure 41, Figure 43, and
Figure 44 .......................................................................................... 13
Added Shutdown Operations Section ......................................... 15
Updated Outline Dimensions....................................................... 16
Changes to Ordering Guide .......................................................... 16
3/09—Revision 0: Initial Version
9/09—Rev. A to Rev. B
Added ADA4691-2, 9-Ball WLCSP; ADA4692-2, 8-Lead
LFCSP; and ADA4692-4, 14-Lead TSSOP................. Throughout
Changes to General Description .................................................... 1
Updated Outline Dimensions ....................................................... 16
Changes to Ordering Guide .......................................................... 17
Rev. D | Page 2 of 20
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—2.7 V OPERATION
VSY = 2.7 V, VCM = VSY/2, TA = 25°C, unless otherwise specified.
Table 2.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Dual (ADA469x-2)
Quad (ADA469x-4)
Offset Voltage Drift
Input Bias Current
Symbol
Test Conditions/Comments
VOS
VCM = −0.3 V to +1.6 V
VCM = −0.1 V to +1.6 V; −40°C < TA < +125°C
VCM = −0.1 V to +1.6 V; −40°C < TA < +125°C
−40°C < TA < +125°C
ΔVOS/ΔT
Min
Typ
Max
Unit
0.5
2.5
3.5
4.0
4
mV
mV
mV
μV/°C
5
360
8
225
+1.6
pA
pA
pA
pA
V
dB
dB
dB
dB
dB
dB
1
IB
0.5
−40°C < TA < +125°C
Input Offset Current
IOS
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
Large Signal Voltage Gain
AVO
Input Capacitance
Differential Mode
Common Mode
Logic High Voltage (Enabled)
Logic Low Voltage (Power-Down)
Logic Input Current (Per Pin)
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
Closed-Loop Output Impedance
Output Pin Leakage Current
POWER SUPPLY
Power Supply Rejection Ratio
CIN
CINDM
CINCM
VIH
VIL
IIN
VOH
VOL
ISC
ZOUT
PSRR
Supply Current Per Amplifier
ISY
Supply Current Shutdown Mode
ISD
1
−40°C < TA < +125°C
−40°C < TA < +125°C
VCM = −0.3 V to +1.6 V
VCM = −0.1 V to +1.6 V; −40°C < TA < +125°C
RL = 2 kΩ, VOUT = 0.5 V to 2.2 V
−40°C < TA < +85°C
−40°C < TA < +125°C
RL = 600 Ω, VOUT = 0.5 V to 2.2 V
−0.3
70
62
90
80
63
85
90
100
95
2.5
7
−40°C < TA < +125°C
−40°C < TA < +125°C
−40°C < TA < +125°C, 0 V ≤ VSD ≤ 2.7 V
1.6
RL = 2 kΩ to GND
−40°C < TA < +125°C
RL = 600 Ω to GND
−40°C < TA < +125°C
RL = 2 kΩ to VSY
−40°C < TA < +125°C
RL = 600 Ω to VSY
−40°C < TA < +125°C
VOUT = VSY or GND
f = 1 MHz, AV = −100
−40°C < TA < +125°C, shutdown active, VSD = VSS
2.65
2.6
2.55
2.5
VS = 2.7 V to 5.5 V
−40°C < TA < +125°C
VOUT = VSY/2
−40°C < TA < +125°C
All amplifiers shut down, VSD = VSS
−40°C < TA < +125°C
80
75
Rev. D | Page 3 of 20
0.5
1
2.67
2.59
24
78
30
40
95
130
±15
372
10
90
165
200
240
10
2
pF
pF
V
V
μA
V
V
V
V
mV
mV
mV
mV
mA
Ω
nA
dB
dB
μA
μA
nA
μA
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
Parameter
DYNAMIC PERFORMANCE
Slew Rate
Symbol
Test Conditions/Comments
SR
Settling Time to 0.1%
Gain Bandwidth Product
Phase Margin
Turn-On/Turn-Off Time
NOISE PERFORMANCE
Distortion
tS
GBP
ΦM
RL = 600 Ω, CL = 20 pF, AV = +1
RL = 2 kΩ, CL = 20 pF, AV = +1
Step = 0.5 V, RL = 2 kΩ, 600 Ω
RL = 1 MΩ, CL = 35 pF, AV = +1
RL = 1 MΩ, CL = 35 pF, AV = +1
RL = 600 Ω
1.1
1.4
1
3.6
49
1
V/μs
V/μs
μs
MHz
Degrees
μs
AV = −1, RL = 2 kΩ, f = 1 kHz, VIN rms = 0.15 V rms
0.009
%
AV = −1, RL = 600 Ω, f = 1 kHz, VIN rms = 0.15 V rms
AV = +1, RL = 2 kΩ, f = 1 kHz, VIN rms = 0.15 V rms
AV = +1, RL = 600 Ω, f = 1 kHz, VIN rms = 0.15 V rms
f = 0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
0.01
0.006
0.009
3.1
16
13
%
%
%
μV p-p
nV/√Hz
nV/√Hz
Voltage Noise
Voltage Noise Density
THD + N
en p-p
en
Min
Typ
Max
Unit
ELECTRICAL CHARACTERISTICS—5 V OPERATION
VSY = 5 V, VCM = VSY/2, TA = 25°C, unless otherwise specified.
Table 3.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Dual (ADA469x-2)
Quad (ADA469x-4)
Offset Voltage Drift
Input Bias Current
Symbol
Test Conditions/Comments
VOS
VCM = −0.3 V to +3.9 V
VCM = −0.1 V to +3.9 V; −40°C < TA < +125°C
VCM = −0.1 V to +3.9 V; −40°C < TA < +125°C
−40°C < TA < +125°C
ΔVOS/ΔT
Min
Typ
Max
Unit
0.5
2.5
3.5
4.0
4
mV
mV
mV
μV/°C
5
360
8
260
+3.9
pA
pA
pA
pA
V
dB
dB
dB
dB
dB
dB
1
IB
0.5
−40°C < TA < +125°C
Input Offset Current
IOS
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
Large Signal Voltage Gain
AVO
Input Capacitance
Differential Mode
Common Mode
Logic High Voltage (Enabled)
Logic Low Voltage (Power-Down)
Logic Input Current (Per Pin)
CINDM
CINCM
VIH
VIL
IIN
1
−40°C < TA < +125°C
−40°C < TA < +125°C
VCM = −0.3 V to +3.9 V
VCM = −0.1 V to +3.9 V; −40°C < TA < +125°C
RL = 2 kΩ, VO = 0.5 V to 4.5 V, VCM = 0 V
−40°C < TA < +85°C
−40°C < TA < +125°C
RL = 600 Ω, VO = 0.5 V to 4.5 V, VCM = 0 V
−0.3
75
68
95
80
70
90
98
110
100
2.5
7
−40°C < TA < +125°C
−40°C < TA < +125°C
−40°C < TA < +125°C, 0 V ≤ VSD ≤ 2.7 V
Rev. D | Page 4 of 20
2.0
0.8
1
pF
pF
V
V
μA
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
Parameter
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Limit
Closed-Loop Output Impedance
Output Pin Leakage Current
POWER SUPPLY
Power Supply Rejection Ratio
Symbol
Test Conditions/Comments
Min
Typ
VOH
RL = 2 kΩ
−40°C ≤ TA ≤ +125°C
RL = 600 Ω to GND
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ
−40°C ≤ TA ≤ +125°C
RL = 600 Ω
−40°C ≤ TA ≤ +125°C
VOUT = VSY or GND
ADA4691-2, f = 1 MHz, AV = −100
ADA4691-2, f = 1 MHz, AV = −100
−40°C < TA < +125°C, shutdown active, VSD = VSS
4.95
4.90
4.85
4.80
4.97
VSY = 2.7 V to 5.5 V
−40°C ≤ TA ≤ +125°C
VOUT = VSY/2
−40°C ≤ TA ≤ +125°C
All amplifiers shut down, VSD = VSS
−40°C ≤ TA ≤ +125°C
80
75
VOL
ISC
ZOUT
PSRR
Supply Current Per Amplifier
ISY
Supply Current Shutdown Mode
ISD
DYNAMIC PERFORMANCE
Slew Rate
Settling Time to 0.1%
Gain Bandwidth Product
Phase Margin
Turn-On/Turn-Off Time
NOISE PERFORMANCE
Distortion
Voltage Noise
Voltage Noise Density
Max
Unit
35
50
110
155
V
V
V
V
mV
mV
mV
mV
mA
Ω
Ω
nA
225
275
dB
dB
μA
μA
nA
μA
4.88
30
100
±55
364
246
10
90
180
10
2
SR
tS
GBP
ΦM
RL = 2 kΩ, 600 Ω, CL = 20 pF, AV = +1
VIN = 2 V step, RL = 2 kΩ or 600 Ω
RL = 1 MΩ, CL = 35 pF, AV = +1
RL = 1 MΩ, CL = 35 pF, AV = +1
RL = 600 Ω
1.3
1.5
3.6
52
1
V/μs
μs
MHz
Degrees
μs
THD + N
AV = −1, RL = 2 kΩ, f = 1 kHz, VIN rms = 0.8 V rms
0.006
%
en p-p
en
en
AV = −1, RL = 600 Ω, f = 1 kHz, VIN rms = 0.8 V rms
AV = +1, RL = 2 kΩ, f = 1 kHz, VIN rms = 0.8 V rms
AV = +1, RL = 600 Ω, f = 1 kHz, VIN rms = 0.8 V rms
f = 0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
0.008
0.001
0.003
3.2
16
13
%
%
%
μV p-p
nV/√Hz
nV/√Hz
Rev. D | Page 5 of 20
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
ABSOLUTE MAXIMUM RATINGS
THERMAL RESISTANCE
Table 4.
Parameter
Supply Voltage
Input Voltage
Input Current1
Shutdown Pin Rise/Fall Times
Differential Input Voltage2
Output Short-Circuit Duration to GND
Temperature
Storage Temperature Range
Operating Temperature Range
Junction Temperature Range
Lead Temperature (Soldering, 60 sec)
Rating
6V
VSS − 0.3 V to VDD + 0.3 V
±10 mA
50 μs maximum
±VSY
Indefinite
−65°C to +150°C
−40°C to +125°C
−65°C to +150°C
300°C
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages and
measured using a standard 4-layer board, unless otherwise
specified.
Table 5. Thermal Resistance
Package Type
8-Lead SOIC_N (R-8)
8-Lead LFCSP (CP-8-6)
9-Ball WLCSP (CB-9-3)
10-Lead LFCSP (CP-10-11)
16-Lead LFCSP (CP-16-22)
14-Lead TSSOP (RU-14)
1
Input pins have clamp diodes to the supply pins. Limit the input current to
10 mA or less whenever the input signal exceeds the power supply rail by 0.3 V.
2
Differential input voltage is limited to 6 V or the supply voltage, whichever
is less.
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.
1
N/A = not applicable.
ESD CAUTION
Rev. D | Page 6 of 20
θJA
120
125
77
115
75
112
θJC
45
40
N/A1
40
12
35
Unit
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
PIN CONFIGURATIONS
OUT A 1
8 V+
OUT B
V+
OUT A
–IN A 2
ADA4692-2
7 OUT B
A1
A2
A3
+IN A 3
TOP VIEW
(Not to Scale)
6 –IN B
–IN B
SD A/B
–IN A
B1
B2
B3
+IN B
V–
+IN A
C1
C2
C3
5 +IN B
V– 4
OUT A 1
07950-058
ADA4692-2
+IN 3
TOP VIEW
(Not to Scale)
V– 4
Figure 3. 9-Ball Wafer Level Chip Scale WLCSP (CB-9-3)
OUT A 1
8 OUT B
V+ 4
+IN B 3
12 +IN D
11 V–
9
–IN C
OUT B 7
8
OUT C
07950-002
Figure 8. 14-Lead TSSOP (RU-14)
11 V–
10 +IN C
–IN C
OUT C 8
SD C/D 7
OUT B 5
SD A/B 6
TOP VIEW
(Not to Scale)
10 +IN C
9
–IN B 4
ADA4692-4
–IN B 6
12 +IN D
ADA4691-4
13 –IN D
6 +IN B
13 –IN D
14 OUT D
15 OUT A
16 –IN A
V+ 2
+IN B
+IN B 5
Figure 4. 10-Lead, 2 mm × 2 mm LFCSP (CP-10-11)
+IN A 1
–IN B
5
7 –IN B
SD B 5
SD A 4
V– 3
TOP VIEW
(Not to Scale)
OUT B
6
NOTES
1. IT IS RECOMMENDED THAT THE EXPOSED
PAD BE CONNCECTED TO V–.
07950-060
TOP VIEW
(Not to Scale)
Figure 5. 16-Lead, 3 mm × 3 mm LFCSP (CP-16-22)
Rev. D | Page 7 of 20
07950-059
ADA4691-2
+IN A 2
V+
7
14 OUT D
–IN A 2
+IN A 3
–IN A 1
8
Figure 7. 8-Lead SOIC_N (R-8)
9 V+
10 OUT A
–IN 2
07950-001
Figure 6. 8-Lead, 2 mm × 2 mm LFCSP (CP-8-6)
ADA4691-2
TOP VIEW
(BALL SIDE DOWN)
Not to Scale
07950-016
BALL A1
CORNER
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
TYPICAL PERFORMANCE CHARACTERISTICS
350
700
ADA4692-2
VSY = 2.7V
T
300
A = 25°C
–0.3V ≤ VCM ≤ +1.6V
SIGNIFIES CENTER
OF BIN
250
ADA4692-2
VSY = 5V
600 TA = 25°C
–0.3V ≤ VCM ≤ +3.9V
SIGNIFIES CENTER
OF BIN
500
NUMBER OF AMPLIFIERS
200
150
100
400
300
200
0
0.4
0.8
1.2
1.6
2.0
VOS (mV)
0
–2.0 –1.6 –1.2 –0.8 –0.4
07950-003
0
–2.0 –1.6 –1.2 –0.8 –0.4
Figure 9. Input Offset Voltage Distribution
0.8
1.2
1.6
2.0
30
ADA4692-2
VSY = ±1.35V
–40°C < TA < +125°C
SIGNIFIES CENTER
OF BIN
ADA4692-2
VSY = ±2.5V
–40°C < TA < +125°C
SIGNIFIES CENTER
OF BIN
25
NUMBER OF AMPLIFIERS
25
20
15
10
5
20
15
10
5
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
TCVOS (µV/°C)
0
07950-004
0
0
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.2
2.4
4.5
5.0
2.0
Figure 13. Input Offset Voltage Drift Distribution
2.0
2.0
ADA4692-2
VSY = 2.7V
TA = 25°C
0.5
0.5
VOS (mV)
1.0
0
0
–0.5
–1.0
–1.0
–1.5
–1.5
0.5
1.0
1.5
2.0
2.5
VCM (V)
07950-005
–0.5
0
ADA4692-2
VSY = 5V
TA = 25°C
1.5
1.0
–2.0
–0.5
0.4
TCVOS (µV/°C)
Figure 10. Input Offset Voltage Drift Distribution
1.5
0.2
07950-007
NUMBER OF AMPLIFIERS
0.4
Figure 12. Input Offset Voltage Distribution
30
VOS (mV)
0
VOS (mV)
07950-006
100
50
07950-008
NUMBER OF AMPLIFIERS
TA = 25°C, unless otherwise noted.
Figure 11. Input Offset Voltage vs. Common-Mode Voltage
–2.0
–0.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
VCM (V)
Figure 14. Input Offset Voltage vs. Common-Mode Voltage
Rev. D | Page 8 of 20
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
1k
1k
ADA4692-2
VSY = ±1.35V
TA = 25°C
AVERAGE 20 CHANNELS
100
ADA4692-2
VSY = ±2.5V
TA = 25°C
AVERAGE 20 CHANNELS
100
10
0.1
0.1
35
45
55
65
75
85
95
105
115
125
TEMPERATURE (°C)
0.01
25
07950-009
0.01
25
35
45
55
65
75
85
95
105
115
125
4.5
5.0
100
TEMPERATURE (°C)
Figure 15. Input Bias Current vs. Temperature
07950-012
1
07950-013
1
07950-014
IB (pA)
IB (pA)
10
Figure 18. Input Bias Current vs. Temperature
1k
1k
TA = 125°C
TA = 125°C
100
100
TA = 85°C
IB (pA)
10
1
ADA4692-2
VSY = 2.7V
AVERAGE 20 CHANNELS
0.001
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
VCM (V)
0.01
0
OUTPUT SATURATION VOLTAGE (mV)
100
TA = +85°C
TA = +25°C
TA = –40°C
1
0.1
0.01
0.001
0.01
0.1
1
10
100
ILOAD (mA)
07950-011
OUTPUT SATURATION VOLTAGE (mV)
TA = +125°C
10
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Figure 19. Input Bias Current vs. Common-Mode Voltage
10k
ADA4692-2
VSY = ±1.35V
VOH = (V+) – VOUT
(SOURCING)
0.5
VCM (V)
Figure 16. Input Bias Current vs. Common-Mode Voltage
1k
TA = 25°C
0.1
0.01
10k
TA = 85°C
1
TA = 25°C
0.1
07950-010
IB (pA)
10
ADA4692-2
VSY = 5V
AVERAGE 20 CHANNELS
Figure 17. Output Voltage (VOH) to Supply Rail vs. Load Current
1k
ADA4692-2
VSY = ±2.5V
VOH = (V+) – VOUT
(SOURCING)
TA = +125°C
100
TA = +85°C
10
TA = +25°C
1
TA = –40°C
0.1
0.01
0.001
0.01
0.1
1
10
ILOAD (mA)
Figure 20. Output Voltage (VOH) to Supply Rail vs. Load Current
Rev. D | Page 9 of 20
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
10k
100
TA = +85°C
10
TA = +25°C
1
TA = –40°C
0.1
0.01
0.1
1
10
100
ILOAD (mA)
100
TA = +85°C
10
TA = +25°C
1
TA = –40°C
0.1
0.01
0.1
1
10
100
ILOAD (mA)
Figure 21. Output Voltage (VOL) to Supply Rail vs. Load Current
Figure 24. Output Voltage (VOL) to Supply Rail vs. Load Current
120
120
120
100
100
100
100
80
80
80
80
60
60
40
40
20
20
0
0
–60
1k
10k
100k
40
40
20
20
0
0
–20
–20
–40
–40
–60
10M
1M
FREQUENCY (Hz)
–60
1k
–40
10k
100k
–60
10M
1M
FREQUENCY (Hz)
Figure 25. Open-Loop Gain and Phase vs. Frequency
50
50
AV = +100
AV = +100
40
40
30
30
AV = +10
AV = +10
20
GAIN (dB)
20
10
AV = +1
0
10
AV = +1
0
–10
–10
ADA4692-2
VSY = ±1.35V
TA = 25°C
RL = 600Ω
–30
10
100
–20
1k
10k
100k
1M
FREQUENCY (Hz)
10M
07950-022
GAIN (dB)
–20
CL = 200pF
ADA4692-2
VSY = ±2.5V
TA = 25°C
AV = –1
Figure 22. Open-Loop Gain and Phase vs. Frequency
–20
60
CL = 20pF
Figure 23. Closed-Loop Gain vs. Frequency
ADA4692-2
VSY = ±2.5V
TA = 25°C
RL = 600Ω
–30
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
Figure 26. Closed-Loop Gain vs. Frequency
Rev. D | Page 10 of 20
10M
07950-025
–40
CL = 200pF
ADA4692-2
VSY = ±1.35V
TA = 25°C
AV = –1
07950-021
–20
GAIN (dB)
CL = 20pF
PHASE (Degrees)
120
60
GAIN (dB)
TA = +125°C
0.01
0.001
07950-015
0.01
0.001
1k
07950-018
TA = +125°C
PHASE (Degrees)
1k
ADA4692-2
VSY = ±2.5V
VOL = VOUT – (V–)
(SINKING)
07950-024
ADA4692-2
VSY = ±1.35V
VOL = VOUT – (V–)
(SINKING)
OUTPUT SATURATION VOLTAGE (mV)
OUTPUT SATURATION VOLTAGE (mV)
10k
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
1k
1k
100
100
AV = –100
1
ZOUT (Ω)
ZOUT (Ω)
AV = –100
10
AV = –10
10
AV = –10
1
AV = –1
AV = –1
0.1
ADA4692-2
VSY = ±1.35V
TA = 25°C
1k
10k
100k
1M
10M
FREQUENCY (Hz)
0.01
100
07950-023
0.01
100
120
120
100
100
80
80
60
1M
10M
60
40
20
ADA4692-2
VSY = ±1.35V
TA = 25°C
1k
10k
100k
1M
10M
FREQUENCY (Hz)
ADA4692-2
VSY = ±2.5V
TA = 25°C
0
100
07950-027
0
100
1k
10k
100k
1M
10M
1M
10M
FREQUENCY (Hz)
Figure 28. CMRR vs. Frequency
Figure 31. CMRR vs. Frequency
100
100
PSRR+
PSRR–
80
80
PSRR–
PSRR+
60
PSRR (dB)
60
40
40
20
0
ADA4692-2
VSY = ±1.35V
TA = 25°C
–20
100
1k
10k
100k
FREQUENCY (Hz)
1M
10M
Figure 29. PSRR vs. Frequency
ADA4692-2
VSY = ±2.5V
TA = 25°C
–20
100
1k
10k
100k
FREQUENCY (Hz)
Figure 32. PSRR vs. Frequency
Rev. D | Page 11 of 20
07950-031
20
07950-028
PSRR (dB)
100k
07950-030
40
0
10k
Figure 30. Output Impedance vs. Frequency
CMRR (dB)
CMRR (dB)
1k
FREQUENCY (Hz)
Figure 27. Output Impedance vs. Frequency
20
ADA4692-2
VSY = ±2.5V
TA = 25°C
07950-026
0.1
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
100
ADA4692-2
VSY = ±1.35V
TA = 25°C
10
0.1
1
10
100
1k
100
ADA4692-2
VSY = ±2.5V
TA = 25°C
10k
10
0.1
FREQUENCY (Hz)
35
1k
10k
ADA4692-2
VSY = ±2.5V
VIN = 100mV p-p
AV = +1
RL = 2kΩ
TA = 25°C
40
35
30
OVERSHOOT+
25
OVERSHOOT–
20
15
30
OVERSHOOT+
25
20
OVERSHOOT–
15
10
10
1k
CAPACITANCE (pF)
0
10
07950-034
TIME (2µs/DIV)
1k
Figure 37. Small Signal Overshoot vs. Load Capacitance
OUTPUT (500mV/DIV)
Figure 34. Small Signal Overshoot vs. Load Capacitance
ADA4692-2
VSY = ±1.35V
GAIN = +1
RL = 2kΩ
CL = 300pF
TA = 25°C
100
CAPACITANCE (pF)
ADA4692-2
VSY = ±2.5V
GAIN = +1
RL = 2kΩ,
CL = 300pF
TA = 25°C
TIME (2µs/DIV)
Figure 35. Large Signal Transient Response
Figure 38. Large Signal Transient Response
Rev. D | Page 12 of 20
07950-037
100
07950-033
0
10
07950-036
5
5
OUTPUT (500mV/DIV)
OVERSHOOT (%)
45
OVERSHOOT (%)
40
100
Figure 36. Voltage Noise Density vs. Frequency
ADA4692-2
VSY = ±1.35V
VIN = 100mV p-p
AV = +1
RL = 2kΩ
TA = 25°C
45
10
FREQUENCY (Hz)
Figure 33. Voltage Noise Density vs. Frequency
50
1
07950-032
VOLTAGE NOISE DENSITY (nV/ Hz)
1k
07950-029
VOLTAGE NOISE DENSITY (nV/ Hz)
1k
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
OUTPUT (20mV/DIV)
ADA4692-2
VSY = ±2.5V
GAIN = +1
RL = 2kΩ
CL = 200pF
TA = 25°C
07950-035
ADA4692-2
VSY = ±1.35V
GAIN = +1
RL = 2kΩ
CL = 200pF
TA = 25°C
TIME (2µs/DIV)
07950-038
OUTPUT (20mV/DIV)
T
TIME (2µs/DIV)
Figure 42. Small Signal Transient Response
OUTPUT (1µV/DIV)
OUTPUT (1µV/DIV)
Figure 39. Small Signal Transient Response
TIME (1s/DIV)
07950-043
ADA4692-2
VSY = ±2.5V
GAIN = +1M
TA = 25°C
07950-040
ADA4692-2
VSY = ±1.35V
GAIN = +1M
TA = 25°C
TIME (1s/DIV)
Figure 43. 0.1 Hz to 10 Hz Noise
Figure 40. 0.1 Hz to 10 Hz Noise
250
250
ADA4692-2
ADA4692-2
TA = +125°C
TA = +85°C
225
ISY/AMPLIFIER (µA)
TA = +25°C
150
TA = –40°C
100
200
VSY = ±2.5V
175
VSY = ±1.35V
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
VSY (V)
5.0
125
–40
–25
–10
5
20
35
50
65
80
95
110
TEMPERATURE (°C)
Figure 44. Supply Current per Channel vs. Temperature
Figure 41. Supply Current per Amplifier vs. Supply Voltage
Rev. D | Page 13 of 20
125
07950-138
150
50
07950-135
ISY/CHANNEL (µA)
200
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
1
1
ADA4692-2
VSY = ±1.35V
AV = –1
TA = 25°C
ADA4692-2
VSY = ±2.5V
AV = –1
TA = 25°C
THD + N (%)
0.1
THD + N (%)
0.1
RL = 600Ω
RL = 2kΩ
RL = 2kΩ
100
1k
10k
20k
FREQUENCY (Hz)
Figure 45. THD + Noise vs. Frequency
0.001
10
100
1k
10k
20k
FREQUENCY (Hz)
Figure 48. THD + Noise vs. Frequency
50mV/DIV
50mV/DIV
1V/DIV
ADA4692-2
VSY = ±2.5V
AV = –100
TA = 25°C
07950-050
ADA4692-2
VSY = ±1.35V
TA = 25°C
TIME (4µs/DIV)
1V/DIV
07950-051
0.001
10
TIME (4µs/DIV)
Figure 46. Positive Overload Recovery
Figure 49. Positive Overload Recovery
50mV/DIV
50mV/DIV
1V/DIV
TIME (4µs/DIV)
ADA4692-2
VSY = ±2.5V
AV = –100
TA = 25°C
07950-052
ADA4692-2
VSY = ±1.35V
TA = 25°C
TIME (4µs/DIV)
Figure 47. Negative Overload Recovery
Figure 50. Negative Overload Recovery
Rev. D | Page 14 of 20
07950-053
1V/DIV
07950-045
0.01
07950-042
0.01
RL = 600Ω
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
1V/DIV
200mV/DIV
TIME (1µs/DIV)
07950-054
ADA4692-2
VSY = ±1.35V
RL = 2kΩ
TA = 25°C
ERROR BAND
ERROR BAND
TIME (1µs/DIV)
Figure 51. Positive Settling Time to 0.1%
Figure 54. Positive Settling Time to 0.1%
200mV/DIV
1V/DIV
ERROR BAND
ERROR BAND
TIME (1µs/DIV)
ADA4692-2
VSY = ±2.5V
RL = 2kΩ
TA = 25°C
07950-056
ADA4692-2
VSY = ±1.35V
RL = 2kΩ
TA = 25°C
TIME (1µs/DIV)
Figure 52. Negative Settling Time to 0.1%
–80
CS (dB) = 20 log (VOUT/100 = VIN)
V+
–100
VIN
+
2
V–
U1
V+
V–
R3
600Ω
–
0
R1
100kΩ
V–
0
U2
5
V–
V+
R2
1kΩ
6
7
0
0
V+
–110
–120
ADA4692-2
VSY = ±2.5V
VIN = 2.8V p-p
AV = +1
TA = 25°C
–130
–140
100
1k
10k
FREQUENCY (Hz)
100k
07950-140
CHANNEL SEPARATION (dB)
3
Figure 55. Negative Settling Time to 0.1%
Figure 53. Channel Separation (CS) vs. Frequency
Rev. D | Page 15 of 20
07950-057
20mV/DIV
10mV/DIV
–90
ADA4692-2
VSY = ±2.5V
RL = 2kΩ
TA = 25°C
07950-055
20mV/DIV
10mV/DIV
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
SHUTDOWN OPERATION
INPUT PIN CHARACTERISTICS
The ADA4691-2 has a classic CMOS logic inverter input for each
shutdown pin, as shown in Figure 56.
SD A, SD B
VDD
P-CHANNEL
N-CHANNEL
07950-149
OUTPUT
INPUT
ISY = 724mV/1k = 724µA
Figure 56. CMOS Inverter
DUT OUTPUT
07950-152
With slowly changing inputs, the top transistor and bottom
transistor may be slightly on at the same time, increasing the
supply current. This can be avoided by driving the input with
a digital logic output having fast rise and fall times. Figure 57
through Figure 59 show the supply current for both sections
switching simultaneously with rise times of 1 μs, 10 μs, and 1 ms.
Clearly, the rise and fall times should be faster than 10 μs.
Using an RC time constant to enable/disable shutdown is not
recommended.
TIME (400µs/DIV)
Figure 59. Shutdown Pin Rise Time = 1 ms
INPUT THRESHOLD
The input threshold is approximately 1.2 V above the V− pin when
operating on ground and 5 V and 0.9 V when operating on 2.7 V
(see Figure 60 and Figure 61). The threshold is relatively stable
over temperature. For operation on split supplies, the logic swing
may have to be level shifted.
500
ADA4691-2
450 TA = 25°C
VSY = 5V
400
ISY = 196mV/1k = 196µA
350
TA = +125°C
ISY (µA)
300
SD A, SD B
TA = +85°C
250
200
150
DUT OUTPUT
07950-150
50
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
07950-155
0
Figure 57. Shutdown Pin Rise Time = 1 μs
2.7
07950-156
TIME (400µs/DIV)
TA = +25°C
TA = –40°C
100
SD VOLTAGE (V)
Figure 60. Supply Current vs. Temperature, VSY = 5 V
300
ADA4691-2
VSY = 2.7V
ISY = 192mV/1k = 196µA
250
ISY (µA)
200
SD A, SD B
DUT OUTPUT
TA = +125°C
TA = +85°C
150
TIME (400µs/DIV)
07950-151
100
TA = +25°C
TA = –40°C
50
Figure 58. Shutdown Pin Rise Time = 10 μs
0
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
SD VOLTAGE (V)
Figure 61. Supply Current vs. Temperature, VSY = 2.7 V
Rev. D | Page 16 of 20
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
OUTLINE DIMENSIONS
3.10
3.00 SQ
2.90
PIN 1
INDICATOR
0.30
0.23
0.18
0.50
BSC
13
PIN 1
INDICATOR
16
1
12
EXPOSED
PAD
1.75
1.60 SQ
1.45
9
TOP VIEW
0.80
0.75
0.70
4
5
8
0.05 MAX
0.02 NOM
COPLANARITY
0.08
0.20 REF
SEATING
PLANE
0.25 MIN
BOTTOM VIEW
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
SECTION OF THIS DATA SHEET.
08-16-2010-E
0.50
0.40
0.30
COMPLIANT TO JEDEC STANDARDS MO-220-WEED-6.
Figure 62. 16-Lead Lead Frame Chip Scale Package [LFCSP_WQ]
3 mm × 3 mm Body, Very Very Thin Quad
(CP-16-22)
Dimensions shown in millimeters
1.250
1.210
1.170
0.415
0.400
0.385
0.645
0.600
0.555
SEATING
PLANE
3
2
1
A
BALL A1
IDENTIFIER
0.287
0.267
0.247
1.260
1.220
1.180
B
0.40
BSC
C
0.230
0.200
0.170
0.05 NOM
COPLANARITY
Figure 63. 9-Ball Wafer Level Chip Scale Package [WLCSP]
(CB-9-3)
Dimensions shown in millimeters
Rev. D | Page 17 of 20
BOTTOM VIEW
(BALL SIDE UP)
091709-A
TOP VIEW
(BALL SIDE DOWN)
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
PIN 1 INDEX
AREA
0.50
0.45
0.40
2.00
BSC SQ
PIN 1
INDICATOR
9
10
8
0.30
0.25
0.18
1
6
3
5
TOP VIEW
0.60
0.55
0.50
BOTTOM VIEW
0.05 MAX
0.02 NOM
COPLANARITY
0.05
0.50
BSC
0.20 REF
081308-D
SEATING
PLANE
4
Figure 64. 10-Lead Lead Frame Chip Scale Package [LFCSP_UQ]
2 mm × 2 mm Body, Ultra Thin Quad
(CP-10-11)
Dimensions shown in millimeters
0.30
0.25
0.18
2.00
BSC SQ
0.65
0.60
0.55
PIN 1 INDEX
AREA
0.50 BSC
5
8
4
1
TOP VIEW
SEATING
PLANE
PIN 1
INDICATOR
0.05 MAX
0.02 NOM
0.20 REF
Figure 65. 8-Lead Lead Frame Chip Scale Package [LFCSP_UD]
2 mm × 2 mm Body, Ultra Thin, Dual Lead
(CP-8-6)
Dimensions shown in millimeters
Rev. D | Page 18 of 20
062409-A
0.60
0.55
0.50
BOTTOM VIEW
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
5.00 (0.1968)
4.80 (0.1890)
5
1
4
6.20 (0.2441)
5.80 (0.2284)
1.27 (0.0500)
BSC
1.75 (0.0688)
1.35 (0.0532)
0.25 (0.0098)
0.10 (0.0040)
0.51 (0.0201)
0.31 (0.0122)
COPLANARITY
0.10
SEATING
PLANE
0.50 (0.0196)
0.25 (0.0099)
45°
8°
0°
0.25 (0.0098)
0.17 (0.0067)
1.27 (0.0500)
0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-012-AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
012407-A
8
4.00 (0.1574)
3.80 (0.1497)
Figure 66. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
5.10
5.00
4.90
14
8
4.50
4.40
4.30
6.40
BSC
1
7
PIN 1
0.65 BSC
1.20
MAX
0.15
0.05
COPLANARITY
0.10
0.30
0.19
0.20
0.09
SEATING
PLANE
8°
0°
COMPLIANT TO JEDEC STANDARDS MO-153-AB-1
Figure 67. 14-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-14)
Dimensions shown in millimeters
Rev. D | Page 19 of 20
0.75
0.60
0.45
061908-A
1.05
1.00
0.80
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
ORDERING GUIDE
Model1
ADA4691-2ACBZ-R7
ADA4691-2ACBZ-RL
ADA4691-2ACPZ-R7
ADA4691-2ACPZ-RL
ADA4691-4ACPZ-R2
ADA4691-4ACPZ-R7
ADA4691-4ACPZ-RL
ADA4692-2ACPZ-R7
ADA4692-2ACPZ-RL
ADA4692-2ARZ
ADA4692-2ARZ-R7
ADA4692-2ARZ-RL
ADA4692-4ARUZ
ADA4692-4ARUZ-RL
1
Temperature Range
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
Package Description
9-Ball WLCSP
9-Ball WLCSP
10-Lead LFCSP_UQ
10-Lead LFCSP_UQ
16-Lead LFCSP_WQ
16-Lead LFCSP_WQ
16-Lead LFCSP_WQ
8-Lead LFCSP_UD
8-Lead LFCSP_UD
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
14-Lead TSSOP
14-Lead TSSOP
Z = RoHS Compliant Part.
©2009–2010 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D07950-0-11/10(D)
Rev. D | Page 20 of 20
Package Option
CB-9-3
CB-9-3
CP-10-11
CP-10-11
CP-16-22
CP-16-22
CP-16-22
CP-8-6
CP-8-6
R-8
R-8
R-8
RU-14
RU-14
Branding
A2C
A2C
A2
A2
A2P
A2P
A2P
A3
A3