Low Noise, Precision 16 V CMOS,
Rail-to-Rail Operational Amplifiers
AD8661/AD8662/AD8664
NC
V+
TOP VIEW
+IN 3 (Not to Scale) 6 OUT
V– 4
5 NC
NC = NO CONNECT
AD8661
NC 1
7
8 NC
–IN 2
7 V+
+IN 3
6 OUT
5 NC
V– 4
05200-035
8
AD8661
NC = NO CONNECT
Figure 1. AD8661, 8-Lead SOIC_N
(R-8)
OUT A 1
–IN A 2
AD8662
8
V+
7
OUT B
TOP VIEW
+IN A 3 (Not to Scale) 6 –IN B
V– 4
5 +IN B
OUT A 1
–IN A 2
Figure 3. AD8662, 8-Lead SOIC_N
(R-8)
14 OUT D
OUT A 1
Figure 2. AD8661, 8-Lead LFCSP_VD
(CP-8-2)
+IN A 3
TOP VIEW
(Not to Scale)
OUT B
6
–IN B
5
+IN B
Figure 4. AD8662, 8-Lead MSOP
(RM-8)
OUT A 1
–IN A 2
12 +IN D
TOP VIEW
V+ 4 (Not to Scale) 11 V–
+IN A 3
AD8664
V+
7
V– 4
13 –IN D
–IN A 2
8
AD8662
05200-004
Sensors
Medical equipment
Consumer audio
Photodiode amplification
ADC drivers
NC 1
–IN 2
AD8664
14
OUT D
13
–IN D
12 +IN D
TOP VIEW
V+ 4 (Not to Scale) 11 V–
+IN A 3
10 +IN C
+IN B 5
10
+IN C
–IN B 6
9
–IN C
–IN B 6
9
–IN C
OUT B 7
8
OUT C
OUT B 7
8
OUT C
05200-036
+IN B 5
Figure 5. AD8664, 14-Lead SOIC_N
(R-14)
05200-037
APPLICATIONS
PIN CONFIGURATIONS
05200-001
Low offset voltage: 100 μV maximum @ VS = 5 V
Low input bias current: 1 pA maximum
Single-supply operation: 5 V to 16 V
Low noise: 10 nV/√Hz
Wide bandwidth: 4 MHz
Unity-gain stable
Small package options
3 mm × 3 mm 8-lead LFCSP
8-lead MSOP and narrow SOIC
14-lead TSSOP and narrow SOIC
05200-002
FEATURES
Figure 6. AD8664, 14-Lead TSSOP
(RU-14)
GENERAL DESCRIPTION
The AD8661/AD8662/AD8664 are rail-to-rail output, singlesupply amplifiers that use the Analog Devices, Inc., patented
DigiTrim® trimming technique to achieve low offset voltage.
The AD866x series features extended operating ranges, with
supply voltages up to 16 V. It also features low input bias
current, wide signal bandwidth, and low input voltage and
current noise.
The combination of low offset, very low input bias current, and
a wide supply range makes these amplifiers useful in a wide
variety of applications usually associated with higher priced
JFET amplifiers. Systems using high impedance sensors, such as
photodiodes, benefit from the combination of low input bias
current, low noise, low offset, and wide bandwidth. The wide
operating voltage range meets the demands of high
performance ADCs and DACs. Audio applications and medical
monitoring equipment can take advantage of the high input
impedance, low voltage and current noise, and wide bandwidth.
The single AD8661 is available in a narrow 8-lead SOIC
package and a very thin, dual lead, 8-lead LFCSP. The AD8661
SOIC_N package is specified over the extended industrial
temperature range of −40°C to +125°C. The AD8661
LFCSP_VD is specified over the industrial temperature range
of −40°C to +85°C. The AD8662 is available in a narrow 8-lead
SOIC package and an 8-lead MSOP, both specified over the
extended industrial temperature range of −40°C to +125°C. The
AD8664 is available in a narrow 14-lead SOIC package and a
14-lead TSSOP, both with an extended industrial temperature
range of −40°C to +125°C.
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
©2006 Analog Devices, Inc. All rights reserved.
AD8661/AD8662/AD8664
TABLE OF CONTENTS
Features .............................................................................................. 1
AD8661 Electrical Characteristics—LFCSP_VD Only............5
Applications....................................................................................... 1
AD8661 Electrical Characteristics—LFCSP_VD Only............6
Pin Configurations ........................................................................... 1
Absolute Maximum Ratings ............................................................7
General Description ......................................................................... 1
Thermal Resistance .......................................................................7
Revision History ............................................................................... 2
ESD Caution...................................................................................7
Specifications..................................................................................... 3
Typical Performance Characteristics ..............................................8
AD8661/AD8662/AD8664 Electrical Characteristics—
SOIC_N, MSOP, and TSSOP ...................................................... 3
Outline Dimensions ....................................................................... 13
Ordering Guide .......................................................................... 15
AD8661/AD8662/AD8664 Electrical Characteristics—
SOIC_N, MSOP, and TSSOP ...................................................... 4
REVISION HISTORY
7/06—Rev. C to Rev. D
Added AD8664 ...................................................................Universal
Added 14-Lead SOIC_N and 14-Lead TSSOP ...............Universal
Changes to Features.......................................................................... 1
Changes to Table 1............................................................................ 3
Changes to Table 2............................................................................ 4
Changes to Table 3............................................................................ 5
Changes to Table 4............................................................................ 6
Changes to Table 5 and Table 6....................................................... 7
Changes to Figure 29...................................................................... 11
Updated Outline Dimensions ....................................................... 13
Changes to Ordering Guide .......................................................... 15
Changes to Table 1.............................................................................3
Changes to Table 2.............................................................................4
Changes to Table 3.............................................................................5
Changes to Table 4.............................................................................6
Changes to Table 5.............................................................................7
Updated Outline Dimensions....................................................... 13
Changes to Ordering Guide .......................................................... 13
5/06—Rev. B to Rev. C
Changes to Ordering Guide .......................................................... 13
9/05—Revision 0: Initial Version
1/06—Rev. 0 to Rev. A
Added LFCSP_VD .............................................................Universal
Changes to Table 1.............................................................................3
Changes to Table 2.............................................................................4
Changes to Ordering Guide .......................................................... 13
3/06—Rev. A to Rev. B
Added AD8662 ...................................................................Universal
Added MSOP ......................................................................Universal
Rev. D | Page 2 of 16
AD8661/AD8662/AD8664
SPECIFICATIONS
AD8661/AD8662/AD8664 ELECTRICAL CHARACTERISTICS—SOIC_N, MSOP, AND TSSOP
VS = 5.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.
Table 1.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
AD8661
AD8661
AD8662
AD8664
Input Bias Current
Symbol
Conditions
VOS
VCM = VS/2
−40°C < TA < +85°C
−40°C < TA < +125°C
−40°C < TA < +125°C
−40°C < TA < +125°C
Min
IB
Typ
Max
Unit
30
100
1000
1400
1000
1200
1
50
300
0.5
20
75
+3.0
μV
μV
μV
μV
μV
pA
pA
pA
pA
pA
pA
V
dB
dB
V/mV
10
9
μV/°C
μV/°C
100
110
V
V
mV
mV
mA
Ω
1.40
2.0
mA
mA
0.3
−40°C < TA < +85°C
−40°C < TA < +125°C
Input Offset Current
IOS
0.2
−40°C < TA < +85°C
−40°C < TA < +125°C
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Offset Voltage Drift
AD8661
AD8662, AD8664
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
Closed-Loop Output Impedance
POWER SUPPLY
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
Current Noise Density
CMRR
AVO
TCVOS
VCM = −0.1 V to +3.0 V
−40°C < TA < +125°C
RL = 2 kΩ, VO = 0.5 V to 4.5 V
−0.1
85
80
100
−40°C < TA < +125°C
−40°C < TA < +125°C
VOH
VOL
ISC
ZOUT
IL = 1 mA
−40°C < TA < +125°C
IL = 1 mA
−40°C < TA < +125°C
f = 1 MHz, AV = 1
100
100
220
3
2
4.85
4.80
4.93
50
±19
50
ISY
VO = VS/2
−40°C < TA < +125°C
1.15
SR
GBP
ΦO
RL = 2 kΩ
3.5
4
65
V/μs
MHz
Degrees
en p-p
en
f = 0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
f = 1 kHz
2.5
12
10
0.1
μV p-p
nV/√Hz
nV/√Hz
pA/√Hz
in
Rev. D | Page 3 of 16
AD8661/AD8662/AD8664
AD8661/AD8662/AD8664 ELECTRICAL CHARACTERISTICS—SOIC_N, MSOP, AND TSSOP
VS = 16.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.
Table 2.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
AD8661
AD8661
AD8662
AD8664
Input Bias Current
Symbol
Conditions
VOS
VCM = VS/2
−40°C < TA < +85°C
−40°C < TA < +125°C
−40°C < TA < +125°C
−40°C < TA < +125°C
Min
IB
Typ
Max
Unit
50
160
1000
1400
1000
1200
1
50
300
0.5
20
75
+14.0
μV
μV
μV
μV
μV
pA
pA
pA
pA
pA
pA
V
dB
dB
V/mV
10
9
μV/°C
μV/°C
0.3
−40°C < TA < +85°C
−40°C < TA < +125°C
Input Offset Current
IOS
0.2
−40°C < TA < +85°C
−40°C < TA < +125°C
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Offset Voltage Drift
AD8661
AD8662, AD8664
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
Closed-Loop Output Impedance
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
Current Noise Density
CMRR
AVO
TCVOS
VCM = −0.1 V to +14.0 V
−40°C < TA < +125°C
RL = 2 kΩ, VO = 0.5 V to 15.5 V
−0.1
90
90
200
−40°C < TA < +125°C
−40°C < TA < +125°C
VOH
VOL
ISC
ZOUT
PSRR
ISY
IL = 1 mA
IL = 10 mA
−40°C < TA < +125°C
IL = 1 mA
IL = 10 mA
−40°C < TA < +125°C
3
2
15.93
15.60
15.50
15.97
15.70
24
190
50
300
350
±140
45
f = 1 MHz, AV = 1
VS = 5 V to 16 V
−40°C < TA < +125°C
VO = VS/2
−40°C < TA < +125°C
110
110
360
95
95
110
115
1.25
1.55
2.1
V
V
V
mV
mV
mV
mA
Ω
dB
dB
mA
mA
SR
GBP
ΦO
RL = 2 kΩ
3.5
4
65
V/μs
MHz
Degrees
en p-p
en
f = 0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
f = 1 kHz
2.5
12
10
0.1
μV p-p
nV/√Hz
nV/√Hz
pA/√Hz
in
Rev. D | Page 4 of 16
AD8661/AD8662/AD8664
AD8661 ELECTRICAL CHARACTERISTICS—LFCSP_VD ONLY
VS = 5.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.
Table 3.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Input Bias Current
Symbol
Conditions
VOS
VCM = VS/2
−40°C < TA < +85°C
Min
IB
Typ
Max
Unit
50
300
2000
1
50
0.5
20
+3.0
μV
μV
pA
pA
pA
pA
V
dB
dB
V/mV
μV/°C
0.3
−40°C < TA < +85°C
Input Offset Current
IOS
0.2
−40°C < TA < +85°C
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
Closed-Loop Output Impedance
POWER SUPPLY
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
Current Noise Density
CMRR
AVO
TCVOS
VOH
VOL
ISC
ZOUT
VCM = −0.1 V to +3.0 V
−40°C < TA < +85°C
RL = 2 kΩ, VO = 0.5 V to 4.5 V
−40°C < TA < +85°C
IL = 1 mA
−40°C < TA < +85°C
IL = 1 mA
−40°C < TA < +85°C
f = 1 MHz, AV = 1
−0.1
85
80
100
4.85
4.80
100
100
240
4
17
4.93
50
100
120
V
V
mV
mV
mA
Ω
1.40
1.8
mA
mA
±19
65
ISY
VO = VS/2
−40°C < TA < +85°C
1.15
SR
GBP
ΦO
RL = 2 kΩ
3.5
4
65
V/μs
MHz
Degrees
en p-p
en
f = 0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
f = 1 kHz
2.5
12
10
0.1
μV p-p
nV/√Hz
nV/√Hz
pA/√Hz
in
Rev. D | Page 5 of 16
AD8661/AD8662/AD8664
AD8661 ELECTRICAL CHARACTERISTICS—LFCSP_VD ONLY
VS = 16.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.
Table 4.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Input Bias Current
Symbol
Conditions
VOS
VCM = VS/2
−40°C < TA < +85°C
Min
IB
Typ
Max
Unit
50
300
2000
1
50
0.5
20
+14.0
μV
μV
pA
pA
pA
pA
V
dB
dB
V/mV
μV/°C
0.3
−40°C < TA < +85°C
Input Offset Current
IOS
0.2
−40°C < TA < +85°C
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
Closed-Loop Output Impedance
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
Current Noise Density
CMRR
AVO
TCVOS
VOH
VOL
ISC
ZOUT
PSRR
ISY
VCM = −0.1 V to +14.0 V
−40°C < TA < +85°C
RL = 2 kΩ, VO = 0.5 V to 15.5 V
−40°C < TA < +85°C
IL = 1 mA
IL = 10 mA
−40°C < TA < +85°C
IL = 1 mA
IL = 10 mA
−40°C < TA < +85°C
−0.1
90
90
200
15.95
15.60
15.50
17
15.97
15.70
24
210
50
350
400
±140
45
f = 1 MHz, AV = 1
VS = 5 V to 16 V
−40°C < TA < +85°C
VO = VS/2
−40°C < TA < +85°C
110
110
420
4
95
95
110
115
1.25
1.55
1.9
V
V
V
mV
mV
mV
mA
Ω
dB
dB
mA
mA
SR
GBP
ΦO
RL = 2 kΩ
3.5
4
65
V/μs
MHz
Degrees
en p-p
en
f = 0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
f = 1 kHz
2.5
12
10
0.1
μV p-p
nV/√Hz
nV/√Hz
pA/√Hz
in
Rev. D | Page 6 of 16
AD8661/AD8662/AD8664
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage
Output Short-Circuit Duration to GND
Storage Temperature Range
Operating Temperature Range
R-8, RM-8, R-14, and RU-14
CP-8-2
Junction Temperature Range
Lead Temperature, Soldering (60 sec)
THERMAL RESISTANCE
Rating
18 V
−0.1 V to VS
18 V
Indefinite
−60°C to +150°C
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 6. Thermal Resistance
Package Type
8-Lead SOIC_N
8-Lead LFCSP_VD
8-Lead MSOP
14-Lead SOIC_N
14-Lead TSSOP
−40°C to +125°C
−40°C to +85°C
−65°C to +150°C
300°C
1
θJA
121
751
142
88.2
114
Exposed pad soldered to application board.
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.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. D | Page 7 of 16
θJC
43
18 1
44
56.3
23.3
Unit
°C/W
°C/W
°C/W
°C/W
°C/W
AD8661/AD8662/AD8664
TYPICAL PERFORMANCE CHARACTERISTICS
6000
VS = 5V AND 16V
250
INPUT BIAS CURRENT (pA)
5000
4000
3000
2000
1000
200
150
100
05200-026
50
0
–150
–100
–50
0
50
100
05200-032
NUMBER OF AMPLIFIERS
300
VS = 16V
TA = 25°C
VCM = –0.1V TO +14V
0
–40
150
–20
0
VOS (µV)
16
100
120
10
8
6
4
05200-017
2
0
1
2
3
4
5
6
7
8
9
1k
100
VDD – VOH
SOURCING
VOL
SINKING
10
1
05200-019
OUTPUT SATURATION VOLTAGE (mV)
NUMBER OF AMPLIFIERS
80
VDD = 16V
12
0.1
0.001
10
0.01
0.1
110
OUTPUT SATURATION VOLTAGE (mV)
VS = 16V
TA = 25°C
200
100
0
–100
05200-023
–200
2
3
4
5
6
7
8
100
9
10
11
12
13
IL = 1mA
90
(VDD – VOH) AT VS = 5V
80
70
VOL AT VS = 5V
60
50
(VDD – VOH) AT VS = 16V
40
30
VOL AT VS = 16V
20
10
0
–40
14
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
COMMON-MODE VOLTAGE (V)
Figure 9. Input Offset Voltage vs. Common-Mode Voltage
100
05200-030
300
1
10
Figure 11. Output Swing Saturation Voltage vs. Load Current
Figure 8. Offset Voltage Drift Distribution
0
1
LOAD CURRENT (mA)
TCVOS (µV/°C)
VOS (µV)
60
10k
VS = 16V
TA = –40°C TO +125°C
VCM = 8V
14
–300
40
Figure 10. Input Bias Current vs. Temperature
Figure 7. Input Offset Voltage Distribution
0
20
TEMPERATURE (°C)
Figure 12. Output Swing Saturation Voltage vs. Temperature, IL = 1 mA
Rev. D | Page 8 of 16
AD8661/AD8662/AD8664
450
140
IL = 10mA
VS = 5V AND 16V
OUTPUT SATURATION VOLTAGE (mV)
400
120
350
100
(VDD – VOH) AT VS = 16V
CMRR (dB)
300
250
VOL AT VS = 16V
200
80
60
150
40
100
–20
0
20
40
60
80
100
0
100
120
05200-006
0
–40
20
05200-031
50
10k
1k
TEMPERATURE (°C)
Figure 13. Output Swing Saturation Voltage vs. Temperature, IL = 10 mA
0
140
45
120
20
135
GAIN
0
180
–20
225
–40
270
10M
315
FREQUENCY (Hz)
80
60
40
20
0
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 14. Open-Loop Gain and Phase Shift vs. Frequency
Figure 17. PSRR vs. Frequency
1k
70
100
AV = 100
10
AV = 10
AV = 1
1
05200-007
0.1
1k
10k
100k
1M
60
50
40
30
OS+
20
OS–
10
0
10
10M
FREQUENCY (Hz)
VS = ±2.5 AND ±8V
G = +1
RL = 100kΩ
05200-015
SMALL SIGNAL OVERSHOOT (%)
VDD = 16V
0.01
100
VS = 5V AND 16V
100
05200-003
1M
10M
05200-005
90
PHASE
100k
1M
Figure 16. CMRR vs. Frequency
PSRR (dB)
40
ZOUT (Ω)
OPEN-LOOP GAIN (dB)
VS = 5V AND 16V
RL = 100kΩ
C
L = 15pF
60
OPEN-LOOP PHASE SHIFT (Degrees)
80
–60
10k
100k
FREQUENCY (Hz)
100
LOAD CAPACITANCE (pF)
Figure 15. Closed-Loop Output Impedance vs. Frequency
Figure 18. Small Signal Overshoot vs. Load Capacitance
Rev. D | Page 9 of 16
1k
AD8661/AD8662/AD8664
1.8
100
1.6
80
60
1.4
OUTPUT VOLTAGE (mV)
VS = 16V
VS = 5V
1.0
0.8
0.6
0.4
40
20
0
–20
–40
05200-029
–60
0.2
0
–40
–20
0
20
40
60
80
100
05200-010
ISY (mA)
1.2
VS = 5V AND 16V
VIN = 100mV
CL = 200pF
G = +1
–80
–100
120
TIME (0.5µs/DIV)
TEMPERATURE (°C)
Figure 22. Small Signal Transient Response
Figure 19. Supply Current vs. Temperature
1400
8
1200
6
4
OUTPUT VOLTAGE (V)
800
600
400
0
2
4
6
8
10
12
14
16
0
–2
–4
–6
05200-027
200
2
05200-034
ISY (µA)
1000
0
VS = 16V
CL = 200pF
–8
18
TIME (2µs/DIV)
VS (V)
Figure 23. Large Signal Transient Response
Figure 20. Supply Current vs. Supply Voltage
(Dual-Supply Configuration), TA = 25°C
2.0
VS = ±2.5V AND ±8V
100mV
VIN
1.0
0V
0.5
0V
0
–0.5
–1.0
–8V
–2.0
VO
05200-013
–1.5
05200-009
PEAK-TO-PEAK NOISE (µV)
1.5
VS = 16V
G = –100
TIME (5µs/DIV)
TIME (1s/DIV)
Figure 24. Positive Overload Recovery
Figure 21. 0.1 Hz to 10 Hz Input Voltage Noise
Rev. D | Page 10 of 16
AD8661/AD8662/AD8664
16
0V
VS = 16V
G = –100
8
6
4
05200-014
VO
10
0V
2
0
TIME (5µs/DIV)
05200-022
8V
12
NUMBER OF AMPLIFIERS
VIN
–100mV
VS = 5V
TA = –40°C TO +125°C
VCM = 2.5V
14
1
0
2
3
4
5
6
7
8
9
10
3.0
3.5
TCVOS (µV/°C)
Figure 25. Negative Overload Recovery
Figure 28. Offset Voltage Drift Distribution
200
1k
VS = 5V
TA = 25°C
150
100
100
VOS (µV)
50
0
–50
10
–100
1
10
100
1k
05200-021
–200
–0.5
10k
0
Figure 26. Voltage Noise Density vs. Frequency
1200
1000
800
600
400
200
–100
–50
2.0
2.5
VDD = 5V
1400
0
–150
1.5
10k
VS = 5V
TA = 25°C
VCM = –0.1V TO +3V
05200-024
NUMBER OF AMPLIFIERS
1600
1.0
Figure 29. Input Offset Voltage vs. Common-Mode Voltage
0
50
100
OUTPUT SATURATION VOLTAGE (mV)
1800
0.5
COMMON-MODE VOLTAGE (V)
FREQUENCY (Hz)
150
VOS (µV)
1k
100
VDD – VOH
SOURCING
VOL
SINKING
10
1
0.1
0.001
05200-020
1
–150
05200-008
VOLTAGE NOISE DENSITY (nV/ Hz)
VS = ±2.5V AND ±8V
0.01
0.1
1
10
20
LOAD CURRENT (mA)
Figure 30. Output Swing Saturation Voltage vs. Load Current
Figure 27. Input Offset Voltage Distribution
Rev. D | Page 11 of 16
AD8661/AD8662/AD8664
1k
VIN
VDD = 5V
OUTPUT VOLTAGE (2V/DIV)
100
ZOUT (Ω)
AV = 100
10
AV = 1
AV = 10
1
VS = 16V
G = +1
VO
05200-033
0.01
100
05200-012
0.1
1k
10k
100k
1M
TIME (0.2µs/DIV)
10M
FREQUENCY (Hz)
Figure 33. No Phase Reversal
Figure 31. Closed-Loop Output Impedance vs. Frequency
2.5
VS = ±2.5V
2.0 CL = 200pF
G = +1
1.0
0.5
0
–0.5
–1.0
–1.5
05200-011
OUTPUT VOLTAGE (V)
1.5
–2.0
–2.5
TIME (1µs/DIV)
Figure 32. Large Signal Transient Response
Rev. D | Page 12 of 16
AD8661/AD8662/AD8664
OUTLINE DIMENSIONS
5.00 (0.1968)
4.80 (0.1890)
1
5
6.20 (0.2440)
5.80 (0.2284)
4
1.27 (0.0500)
BSC
0.25 (0.0098)
0.10 (0.0040)
COPLANARITY
0.10
SEATING
PLANE
1.75 (0.0688)
1.35 (0.0532)
0.51 (0.0201)
0.31 (0.0122)
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-A A
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.
060506-A
8
4.00 (0.1574)
3.80 (0.1497)
Figure 34. 8-Lead Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
3.00
BSC SQ
0.60 MAX
0.50
0.40
0.30
1
8
PIN 1
INDICATOR
0.90 MAX
0.85 NOM
SEATING
PLANE
TOP
VIEW
2.75
BSC SQ
0.50
BSC
1.50
REF
5
4
1.60
1.45
1.30
0.70 MAX
0.65 TYP
12° MAX
PIN 1
INDICATOR
0.05 MAX
0.01 NOM
0.30
0.23
0.18
0.20 REF
Figure 35. 8-Lead Lead Frame Chip Scale Package [LFCSP_VD]
3 mm x 3 mm Body, Very Thin, Dual Lead
(CP-8-2)
Dimensions shown in millimeters
Rev. D | Page 13 of 16
1.89
1.74
1.59
AD8661/AD8662/AD8664
3.20
3.00
2.80
8
3.20
3.00
2.80
1
5
5.15
4.90
4.65
4
PIN 1
0.65 BSC
0.95
0.85
0.75
1.10 MAX
0.15
0.00
0.38
0.22
0.80
0.60
0.40
8°
0°
0.23
0.08
SEATING
PLANE
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-187-AA
Figure 36. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
8.75 (0.3445)
8.55 (0.3366)
4.00 (0.1575)
3.80 (0.1496)
8
14
1
7
1.27 (0.0500)
BSC
0.50 (0.0197)
0.25 (0.0098)
1.75 (0.0689)
1.35 (0.0531)
0.25 (0.0098)
0.10 (0.0039)
COPLANARITY
0.10
6.20 (0.2441)
5.80 (0.2283)
SEATING
PLANE
0.51 (0.0201)
0.31 (0.0122)
0.25 (0.0098)
0.17 (0.0067)
1.27 (0.0500)
0.40 (0.0157)
060606-A
COMPLIANT TO JEDEC STANDARDS MS-012-AB
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.
Figure 37. 14-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-14)
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
1.05
1.00
0.80
0.65
BSC
1.20
MAX
0.15
0.05
0.30
0.19
45°
8°
0°
0.20
0.09
SEATING
COPLANARITY
PLANE
0.10
8°
0°
COMPLIANT TO JEDEC STANDARDS MO-153-AB-1
Figure 38. 14-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-14)
Dimensions shown in millimeters
Rev. D | Page 14 of 16
0.75
0.60
0.45
AD8661/AD8662/AD8664
ORDERING GUIDE
Model
AD8661ARZ 1
AD8661ARZ-REEL1
AD8661ARZ-REEL71
AD8661ACPZ-R21
AD8661ACPZ-REEL1
AD8661ACPZ-REEL71
AD8662ARZ1
AD8662ARZ-REEL1
AD8662ARZ-REEL71
AD8662ARMZ-R21
AD8662ARMZ-REEL1
AD8664ARZ1
AD8664ARZ-REEL1
AD8664ARZ-REEL71
AD8664ARUZ1
AD8664ARUZ-REEL1
1
Temperature Range
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°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
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead LFCSP_VD
8-Lead LFCSP_VD
8-Lead LFCSP_VD
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead MSOP
8-Lead MSOP
14-Lead SOIC_N
14-Lead SOIC_N
14-Lead SOIC_N
14-Lead TSSOP
14-Lead TSSOP
Z = Pb-free part.
Rev. D | Page 15 of 16
Package Option
R-8
R-8
R-8
CP-8-2
CP-8-2
CP-8-2
R-8
R-8
R-8
RM-8
RM-8
R-14
R-14
R-14
RU-14
RU-14
Branding
A0M
A0M
A0M
A10
A10
AD8661/AD8662/AD8664
NOTES
©2006 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05200-0-7/06(D)
Rev. D | Page 16 of 16