Low Noise, Precision 16 V CMOS,
Rail-to-Rail Operational Amplifiers
Data Sheet
AD8661/AD8662/AD8664
Rev. E Document Feedback
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FEATURES
Low offset voltage: 100 µV maximum at 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
APPLICATIONS
Sensors
Medical equipment
Consumer audio
Photodiode amplification
ADC drivers
PIN CONFIGURATIONS
05200-002
NIC
1
–IN
2
+IN
3
V–
4
NIC
8
V+
7
OUT
6
NIC
5
NIC = NO I NTERNALCO NNE CTI ON
AD8661
TOP VIEW
(No t t o Scal e)
05200-035
NOTES
1. NI C = NO I NTERNAL CONNE CTI ON.
2. CONNECT THE EXPOSED PAD TO V–.
3
+IN
4
V–
1
NIC
2
–IN
6OUT
5NIC
8NIC
7V+
AD8661
TOP VIEW
(Not to Scal e)
Figure 1. AD8661, 8-Lead SOIC
(R-8)
Figure 2. AD8661, 8-Lead LFCSP
(CP-8-13)
OUT A
1
–IN A
2
+IN A
3
V–
4
V+
8
OUT B
7
–IN B
6
+IN B
5
AD8662
TOP VIEW
(Not to Scale)
05200-001
OUT A
1
IN A
2
+INA
3
V
4
V+
8
OUTB
7
–IN B
6
+IN B
5
AD8662
TOP VIEW
(Not to Scale)
05200-004
Figure 3. AD8662, 8-Lead SOIC
(R-8)
Figure 4. AD8662, 8-Lead MSOP
(RM-8)
AD8664
TOP VIEW
(No t t o Scal e)
OUT A
1
–IN A
2
+IN A
3
V+
4
+IN B
5
OUT D
–IN D
+IN D
V–
14
13
12
11
10
–IN B
6
OUT B
7
–IN C
+IN C
OUT C
9
8
05200-036
OUT A
1
–IN A
2
+IN A
3
V+
4
+IN B
5
OUT D
–IN D
+IN D
V–
14
13
12
11
10
–IN B
6
OUT B
7
–IN C
+IN C
OUT C
9
8
05200-037
AD8664
TOP VIEW
(No t t o Scal e)
Figure 5. AD8664, 14-Lead SOIC
(R-14)
Figure 6. AD8664, 14-Lead TSSOP
(RU-14)
GENERAL DESCRIPTION
The AD8661/AD8662/AD86641 are rail-to-rail output, single-
supply amplifiers that use the Analog Devices, Inc., patented
DigiTrim® trimming technique to achieve low offset voltage.
The AD8661/AD8662/AD8664 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
analog-to-digital converters (ADCs) and digital-to-analog
converters (DACs). Audio applications and medical monitoring
equipment can take advantage of the high input impedance, low
voltage, low 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
package is specified over the extended industrial temperature
range of40°C to +125°C. The AD8661 LFCSP 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.
1 Protected by U.S. Patents 6,194,962 and 6,696,894.
AD8661/AD8662/AD8664 Data Sheet
Rev. E | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
AD8661/AD8662/AD8664 Electrical CharacteristicsSOIC,
MSOP, and TSSOP ....................................................................... 3
AD8661/AD8662/AD8664 Electrical CharacteristicsSOIC,
MSOP, and TSSOP ....................................................................... 4
AD8661 Electrical CharacteristicsLFCSP Only ....................5
AD8661 Electrical CharacteristicsLFCSP Only ....................6
Absolute Maximum Ratings ............................................................7
Thermal Resistance .......................................................................7
Typical Performance Characteristics ..............................................8
Outline Dimensions ....................................................................... 13
Ordering Guide .......................................................................... 15
REVISION HISTORY
7/2016—Rev. D to Rev. E
Changed CP-8-2 to CP-8-13 ........................................ Throughout
Changes to Figure 1 and Figure 2 ................................................... 1
Added Patent Note, Note 1 .............................................................. 1
Updated Outline Dimensions ....................................................... 13
Changes to Ordering Guide .......................................................... 15
7/2006Rev. 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
5/2006Rev. B to Rev. C
Changes to Ordering Guide .......................................................... 13
3/2006Rev. A to Rev. B
Added AD8662 ................................................................... Universal
Added MSOP ...................................................................... Universal
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
1/2006Rev. 0 to Rev. A
Added LFCSP_VD ............................................................. Universal
Changes to Table 1 ............................................................................. 3
Changes to Table 2 ............................................................................. 4
Changes to Ordering Guide .......................................................... 13
9/2005Revision 0: Initial Version
Data Sheet AD8661/AD8662/AD8664
Rev. E | Page 3 of 16
SPECIFICATIONS
AD8661/AD8662/AD8664 ELECTRICAL CHARACTERISTICSSOIC, MSOP, AND TSSOP
VS = 5.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.
Table 1.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
V
CM
= V
S
/2 30 100 µV
AD8661 −40°C < T
A
< +85°C 1000 µV
AD8661 −40°C < T
A
< +125°C 1400 µV
AD8662 −40°C < T
A
< +125°C 1000 µV
AD8664 −40°C < T
A
< +125°C 1200 µV
Input Bias Current I
B
0.3 1 pA
−40°C < T
A
< +85°C 50 pA
−40°C < T
A
< +125°C 300 pA
Input Offset Current I
OS
0.2 0.5 pA
−40°C < T
A
< +85°C 20 pA
−40°C < TA < +125°C
75
pA
Input Voltage Range −0.1 +3.0 V
Common-Mode Rejection Ratio CMRR V
CM
= −0.1 V to +3.0 V 85 100 dB
−40°C < T
A
< +125°C 80 100 dB
Large Signal Voltage Gain A
VO
R
L
= 2 kΩ, V
O
= 0.5 V to 4.5 V 100 220 V/mV
Offset Voltage Drift TCV
OS
AD8661 −40°C < T
A
< +125°C 3 10 µV/°C
AD8662, AD8664 −40°C < T
A
< +125°C 2 9 µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
I
L
= 1 mA 4.85 4.93 V
−40°C < T
A
< +125°C 4.80 V
Output Voltage Low V
OL
I
L
= 1 mA 50 100 mV
−40°C < T
A
< +125°C 110 mV
Short-Circuit Current I
SC
±19 mA
Closed-Loop Output Impedance Z
OUT
f = 1 MHz, A
V
= 1 50
POWER SUPPLY
Supply Current per Amplifier I
SY
V
O
= V
S
/2 1.15 1.40 mA
−40°C < T
A
< +125°C 2.0 mA
DYNAMIC PERFORMANCE
Slew Rate SR R
L
= 2 kΩ 3.5 V/µs
Gain Bandwidth Product
GBP
4
MHz
Phase Margin Φ
O
65 Degrees
NOISE PERFORMANCE
Peak-to-Peak Noise e
n
p-p f = 0.1 Hz to 10 Hz 2.5 µV p-p
Voltage Noise Density e
n
f = 1 kHz 12 nV/√Hz
f = 10 kHz 10 nV/√Hz
Current Noise Density i
n
f = 1 kHz 0.1 pA/√Hz
AD8661/AD8662/AD8664 Data Sheet
Rev. E | Page 4 of 16
AD8661/AD8662/AD8664 ELECTRICAL CHARACTERISTICSSOIC, MSOP, AND TSSOP
VS = 16.0 V, V CM = VS/2, TA = 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
V
CM
= V
S
/2 50 160 µV
AD8661
−40°C < TA < +85°C
1000
µV
AD8661 −40°C < T
A
< +125°C 1400 µV
AD8662 −40°C < T
A
< +125°C 1000 µV
AD8664 −40°C < T
A
< +125°C 1200 µV
Input Bias Current I
B
0.3 1 pA
−40°C < T
A
< +85°C 50 pA
−40°C < T
A
< +125°C 300 pA
Input Offset Current I
OS
0.2 0.5 pA
−40°C < T
A
< +85°C 20 pA
−40°C < T
A
< +125°C 75 pA
Input Voltage Range −0.1 +14.0 V
Common-Mode Rejection Ratio CMRR V
CM
= −0.1 V to +14.0 V 90 110 dB
−40°C < T
A
< +125°C 90 110 dB
Large Signal Voltage Gain A
VO
R
L
= 2 kΩ, V
O
= 0.5 V to 15.5 V 200 360 V/mV
Offset Voltage Drift TCV
OS
AD8661 −40°C < T
A
< +125°C 3 10 µV/°C
AD8662, AD8664 −40°C < T
A
< +125°C 2 9 µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
I
L
= 1 mA 15.93 15.97 V
I
L
= 10 mA 15.60 15.70 V
−40°C < T
A
< +125°C 15.50 V
Output Voltage Low V
OL
I
L
= 1 mA 24 50 mV
I
L
= 10 mA 190 300 mV
−40°C < T
A
< +125°C 350 mV
Short-Circuit Current I
SC
±140 mA
Closed-Loop Output Impedance Z
OUT
f = 1 MHz, A
V
= 1 45
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
S
= 5 V to 16 V 95 110 dB
−40°C < T
A
< +125°C 95 115 dB
Supply Current per Amplifier I
SY
V
O
= V
S
/2 1.25 1.55 mA
−40°C < TA < +125°C
2.1
mA
DYNAMIC PERFORMANCE
Slew Rate SR R
L
= 2 kΩ 3.5 V/µs
Gain Bandwidth Product GBP 4 MHz
Phase Margin Φ
O
65 Degrees
NOISE PERFORMANCE
Peak-to-Peak Noise e
n
p-p f = 0.1 Hz to 10 Hz 2.5 µV p-p
Voltage Noise Density e
n
f = 1 kHz 12 nV/√Hz
f = 10 kHz 10 nV/√Hz
Current Noise Density
in
f = 1 kHz
0.1
pA/√Hz
Data Sheet AD8661/AD8662/AD8664
Rev. E | Page 5 of 16
AD8661 ELECTRICAL CHARACTERISTICSLFCSP ONLY
VS = 5.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.
Table 3.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
V
CM
= V
S
/2 50 300 µV
−40°C < TA < +85°C
2000
µV
Input Bias Current I
B
0.3 1 pA
−40°C < T
A
< +85°C 50 pA
Input Offset Current I
OS
0.2 0.5 pA
−40°C < T
A
< +85°C 20 pA
Input Voltage Range −0.1 +3.0 V
Common-Mode Rejection Ratio CMRR V
CM
= −0.1 V to +3.0 V 85 100 dB
−40°C < T
A
< +85°C 80 100 dB
Large Signal Voltage Gain A
VO
R
L
= 2 kΩ, V
O
= 0.5 V to 4.5 V 100 240 V/mV
Offset Voltage Drift TCV
OS
−40°C < T
A
< +85°C 4 17 µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
I
L
= 1 mA 4.85 4.93 V
−40°C < T
A
< +85°C 4.80 V
Output Voltage Low
VOL
IL = 1 mA
50
100
mV
−40°C < T
A
< +85°C 120 mV
Short-Circuit Current I
SC
±19 mA
Closed-Loop Output Impedance Z
OUT
f = 1 MHz, A
V
= 1 65
POWER SUPPLY
Supply Current per Amplifier I
SY
V
O
= V
S
/2 1.15 1.40 mA
−40°C < T
A
< +85°C 1.8 mA
DYNAMIC PERFORMANCE
Slew Rate
SR
RL = 2 kΩ
3.5
V/µs
Gain Bandwidth Product GBP 4 MHz
Phase Margin Φ
O
65 Degrees
NOISE PERFORMANCE
Peak-to-Peak Noise e
n
p-p f = 0.1 Hz to 10 Hz 2.5 µV p-p
Voltage Noise Density e
n
f = 1 kHz 12 nV/√Hz
f = 10 kHz 10 nV/√Hz
Current Noise Density i
n
f = 1 kHz 0.1 pA/√Hz
AD8661/AD8662/AD8664 Data Sheet
Rev. E | Page 6 of 16
AD8661 ELECTRICAL CHARACTERISTICSLFCSP ONLY
VS = 16.0 V, V CM = VS/2, TA = 25°C, unless otherwise noted.
Table 4.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
V
CM
= V
S
/2 50 300 µV
−40°C < TA < +85°C
2000
µV
Input Bias Current I
B
0.3 1 pA
−40°C < T
A
< +85°C 50 pA
Input Offset Current I
OS
0.2 0.5 pA
−40°C < T
A
< +85°C 20 pA
Input Voltage Range −0.1 +14.0 V
Common-Mode Rejection Ratio CMRR V
CM
= −0.1 V to +14.0 V 90 110 dB
−40°C < T
A
< +85°C 90 110 dB
Large Signal Voltage Gain A
VO
R
L
= 2 kΩ, V
O
= 0.5 V to 15.5 V 200 420 V/mV
Offset Voltage Drift TCV
OS
−40°C < T
A
< +85°C 4 17 µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
I
L
= 1 mA 15.95 15.97 V
I
L
= 10 mA 15.60 15.70 V
−40°C < TA < +85°C
15.50
V
Output Voltage Low V
OL
I
L
= 1 mA 24 50 mV
I
L
= 10 mA 210 350 mV
−40°C < T
A
< +85°C 400 mV
Short-Circuit Current I
SC
±140 mA
Closed-Loop Output Impedance
ZOUT
f = 1 MHz, AV = 1
45
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
S
= 5 V to 16 V 95 110 dB
−40°C < T
A
< +85°C 95 115 dB
Supply Current per Amplifier I
SY
V
O
= V
S
/2 1.25 1.55 mA
−40°C < T
A
< +85°C 1.9 mA
DYNAMIC PERFORMANCE
Slew Rate SR R
L
= 2 kΩ 3.5 V/µs
Gain Bandwidth Product GBP 4 MHz
Phase Margin Φ
O
65 Degrees
NOISE PERFORMANCE
Peak-to-Peak Noise e
n
p-p f = 0.1 Hz to 10 Hz 2.5 µV p-p
Voltage Noise Density e
n
f = 1 kHz 12 nV/√Hz
f = 10 kHz 10 nV/√Hz
Current Noise Density i
n
f = 1 kHz 0.1 pA/√Hz
Data Sheet AD8661/AD8662/AD8664
Rev. E | Page 7 of 16
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter Rating
Supply Voltage 18 V
Input Voltage 0.1 V to V
S
Differential Input Voltage 18 V
Output Short-Circuit Duration to GND Indefinite
Storage Temperature Range 60°C to +150°C
Operating Temperature Range
R-8, RM-8, R-14, and RU-14 40°C to +125°C
CP-8-13 −40°C to +85°C
Junction Temperature Range −65°C to +150°C
Lead Temperature, Soldering (60 sec) 300°C
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
THERMAL RESISTANCE
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 θ
JA
θ
JC
Unit
8-Lead SOIC 121 43 °C/W
8-Lead LFCSP 751 181 °C/W
8-Lead MSOP
142
44
°C/W
14-Lead SOIC 88.2 56.3 °C/W
14-Lead TSSOP 114 23.3 °C/W
1 Exposed pad soldered to application board.
ESD CAUTION
AD8661/AD8662/AD8664 Data Sheet
Rev. E | Page 8 of 16
TYPICAL PERFORMANCE CHARACTERISTICS
05200-026
V
OS
(µV)
NUMBER O F AMP LI FI E RS
–150
0
6000
5000
4000
3000
2000
1000
150100500–50–100
V
S
=16V
T
A
=25°C
V
CM
=–0.1VTO+14V
Figure 7. Input Offset Voltage Distribution
05200-017
TCV
OS
V/°C)
NUMBER O F AMP LI FI E RS
012345678 9
0
16
14
12
10
8
6
4
2
10
V
S
=16V
T
A
=–40°C TO +125°C
V
CM
=8V
Figure 8. Offset Voltage Drift Distribution
05200-023
COMMON-MODE VOLTAGE (V)
VOS (µV)
0
–300
300
200
100
0
–100
–200
1412 131110987654321
VS=16V
TA=25°C
Figure 9. Input Offset Voltage vs. Common-Mode Voltage
05200-032
TEMPERATURE (°C)
INPUT BI AS CURRE NT (pA)
–40
0
300
250
200
150
100
50
1201008040 60200
–20
VS= 5V AND 16V
Figure 10. Input Bias Current vs. Temperature
05200-019
LOAD CURRENT(mA)
OUTPUT SATURATION VOLTAGE (mV)
0.001 0.01 0.1 1 10
0.1
10k
1k
100
10
1
100
VOL
SINKING
VDD VOH
SOURCING
VDD=16V
Figure 11. Output Swing Saturation Voltage vs. Load Current
05200-030
TEMPERATURE (°C)
OUTPUT SATURATION VOLTAGE (mV)
–40
0
110
100
90
80
70
60
50
40
30
20
10
1201008040 60200–20
(V
DD
– V
OH
) AT V
S
= 5V
V
OL
AT V
S
= 5V
V
OL
AT V
S
= 16V
(V
DD
– V
OH
) AT V
S
= 16V
I
L
= 1mA
Figure 12. Output Swing Saturation Voltage vs. Temperature, IL = 1 mA
Data Sheet AD8661/AD8662/AD8664
Rev. E | Page 9 of 16
05200-031
TEMPERATURE (°C)
OUTPUT SATURATION VOLTAGE (mV)
–40
0
450
400
350
300
250
200
150
100
50
120100
80
40 60
200
–20
(V
DD
– V
OH
) AT V
S
= 16V
V
OL
AT V
S
= 16V
I
L
= 10mA
Figure 13. Output Swing Saturation Voltage vs. Temperature, IL = 10 mA
05200-003
FREQUENCY (Hz)
OPEN-LOOP GAIN (dB)
OPE N- LO OP P HAS E S HIF T (Degrees)
10k100k 1M 10M
–60
80
315
270
225
180
135
90
45
0
60
40
20
0
–20
–40
GAIN
PHASE
VS=5VAND 16V
RL=100k
CL=15pF
Figure 14. Open-Loop Gain and Phase Shift vs. Frequency
05200-007
FREQUENCY ( Hz )
Z
OUT
(Ω)
100 1k
0.01
1k
100
10
1
0.1
10M1M100k10k
V
DD
= 16V
A
V
= 1
A
V
= 100
A
V
= 10
Figure 15. Closed-Loop Output Impedance vs. Frequency
05200-006
FREQUENCY(Hz)
CMRR (dB)
1001k
0
140
120
100
80
60
40
20
10M1M100k10k
VS=5VAND 16V
Figure 16. CMRR vs. Frequency
05200-005
FREQUENCY (Hz)
PSRR (dB)
1k
0
140
120
100
80
60
40
20
10M1M100k
10k
VS= 5V AND 16V
Figure 17. PSRR vs. Frequency
05200-015
LO AD CAP ACIT ANCE ( pF )
SMALL SIGNAL OVERSHOOT (%)
10
0
70
60
50
40
30
20
10
1k100
OS+
OS–
V
S
= ±2. 5 AND ±8V
G = +1
R
L
= 100kΩ
Figure 18. Small Signal Overshoot vs. Load Capacitance
AD8661/AD8662/AD8664 Data Sheet
Rev. E | Page 10 of 16
05200-029
TEMPERATURE(°C)
ISY ( mA)
–40
0
1.8
1201008040 60200–20
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
VS= 5V
VS=16V
Figure 19. Supply Current vs. Temperature
05200-027
V
S
(V)
I
SY
(µA)
0
0
1400
1200
1000
800
600
400
200
1816141210
864
2
Figure 20. Supply Current vs. Supply Voltage
(Dual-Supply Configuration), TA = 25°C
05200-009
TIME (1s/DIV)
PEAK-TO-PEAK NOISE (µV)
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0 V
S
= ±2.5V AND ±8V
Figure 21. 0.1 Hz to 10 Hz Input Voltage Noise
05200-010
TIME (0.5µs/DIV)
OUTPUT VOLTAGE (mV)
–100
–80
–60
–40
–20
0
20
40
60
80
100VS= 5V AND 16V
VIN =100mV
CL=200pF
G = +1
Figure 22. Small Signal Transient Response
05200-034
TIME (2µs/DIV)
OUTPUT VOLTAGE (V)
–8
–6
–4
2
8
6
4
2
0
V
S
=16V
C
L
=200pF
Figure 23. Large Signal Transient Response
05200-013
TIME (5µs/DIV)
–8V
0V
0V
100mV V
IN
V
O
V
S
= 16V
G = –100
Figure 24. Positive Overload Recovery
Data Sheet AD8661/AD8662/AD8664
Rev. E | Page 11 of 16
05200-014
TIME (5µs/DIV)
0V
8V
–100mV
0V
V
IN
V
O
V
S
= 16V
G = –100
Figure 25. Negative Overload Recovery
05200-008
FREQUENCY (Hz)
VOLTAGE NOI SE DENSITY (n V/ Hz)
1
1
1k
100
10
10k1k10010
VS= ±2.5V AND ±8V
Figure 26. Voltage Noise Density vs. Frequency
05200-024
V
OS
(µV)
NUMBER O F AMP LI FI E RS
–150
0
1800
1600
1400
1200
1000
800
600
400
200
150100500–50
–100
V
S
= 5V
T
A
=25°C
V
CM
=–0.1V TO +3V
Figure 27. Input Offset Voltage Distribution
05200-022
TCV
OS
(µV/°C)
NUMBER O F AMP LI FI E RS
0
0
16
14
12
10
8
6
4
2
109
87
654321
V
S
= 5V
T
A
=–40°C TO +125°C
V
CM
= 2.5V
Figure 28. Offset Voltage Drift Distribution
05200-021
COMMON-MODE VOLTAGE (V)
V
OS
(µV)
–200
200
–100
0
50
100
150
–50
–150
3.53.0
2.52.0
1.51.0
0
–0.5 0.5
VS = 5V
TA = 25° C
Figure 29. Input Offset Voltage vs. Common-Mode Voltage
05200-020
LOAD CURRENT (mA)
OUTPUT SATURATION VOLTAGE (mV)
0.001 0.01 0.
1 1 10 20
0.1
10k
1k
100
10
1
V
DD
= 5V
V
OL
SINKING
V
DD
V
OH
SOURCING
Figure 30. Output Swing Saturation Voltage vs. Load Current
AD8661/AD8662/AD8664 Data Sheet
Rev. E | Page 12 of 16
05200-033
FREQUENCY ( Hz )
Z
OUT
(Ω)
100 1k
0.01
1k
100
10
1
0.1
10M
1M
100k10k
V
DD
= 5V
A
V
= 1
A
V
= 100
A
V
= 10
Figure 31. Closed-Loop Output Impedance vs. Frequency
05200-011
TIME (1µs/DIV)
OUTPUT VOLTAGE (V)
–2.5
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
2.5 VS=±2.5V
CL=200pF
G=+1
Figure 32. Large Signal Transient Response
05200-012
TIME (0.2µs/DIV)
OUTPUT VOLTAGE (2V/DIV)
V
IN
V
O
V
S
= 16V
G = +1
Figure 33. No Phase Reversal
Data Sheet AD8661/AD8662/AD8664
Rev. E | Page 13 of 16
OUTLINE DIMENSIONS
CONTROLLING DIMENSIONS ARE IN MI LL IME TERS ; INCH DI M E NS IONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFE RE NCE ON LYAND ARE NOT APPROPRIATE FOR USE IN DESIGN.
COMPLIANT TO JE DE C S TANDARDS MS-012-AA
060506-A
0.25 ( 0. 0098)
0.17 ( 0. 0067)
1.27 ( 0. 0500)
0.40 ( 0. 0157)
0.50 ( 0. 0196)
0.25 ( 0. 0099) 45°
1.75 ( 0. 0688)
1.35 ( 0. 0532)
SEATING
PLANE
0.25 ( 0. 0098)
0.10 ( 0. 0040)
4
1
85
5.00 (0.1968)
4.80 (0.1890)
4.00 ( 0. 1574)
3.80 ( 0. 1497)
1.27 ( 0. 0500)
BSC
6.20 ( 0. 2440)
5.80 ( 0. 2284)
0.51 ( 0. 0201)
0.31 ( 0. 0122)
COPLANARITY
0.10
Figure 34. 8-Lead Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
8
1
5
4
0.30
0.25
0.20
PIN 1 INDEX
AREA
SEATING
PLANE
0.80
0.75
0.70
1.55
1.45
1.35
1.84
1.74
1.64
0.203 REF
0.05 M AX
0.02 NO M
0.50 BSC
EXPOSED
PAD
3.10
3.00 SQ
2.90
FOR PRO P E R CONNECTI ON O F
THE EXPOSED PAD, REFER TO
THE PIN CO NFI GURAT IO N AND
FUNCTION DES CRIPTI ONS
SECTION OF THIS DATA SHEET.
COPLANARITY
0.08
0.50
0.40
0.30
COMPLIANT
TO
JEDEC STANDARDS M O-229- WEE D- 4
05-11-2016-A
PIN 1
INDICATOR
(R 0. 15)
TOP VI EW BOTTOM VIEW
SIDE VIEW
Figure 35. 8-Lead Lead Frame Chip Scale Package [LFCSP]
3 mm × 3 mm Body and 0.75 mm Package Height
(CP-8-13)
Dimensions shown in millimeters
AD8661/AD8662/AD8664 Data Sheet
Rev. E | Page 14 of 16
COMPLIANT TO JEDEC STANDARDS MO-187-AA
0.80
0.60
0.40
4
8
1
5
PIN 1 0.65 BSC
SEATING
PLANE
0.38
0.22
1.10 MAX
3.20
3.00
2.80
COPLANARITY
0.10
0.23
0.08
3.20
3.00
2.80
5.15
4.90
4.65
0.15
0.00
0.95
0.85
0.75
Figure 36. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
CONTROLLING DIMENSIONS ARE IN MI LL IME TERS ; INCH DI M E NS IONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFE RE NCE ON LY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
COMPLIANT TO JE DE C S TANDARDS MS-012-AB
060606-A
14 8
7
16.20 ( 0. 2441)
5.80 ( 0. 2283)
4.00 ( 0. 1575)
3.80 ( 0. 1496)
8.75 ( 0. 3445)
8.55 ( 0. 3366)
1.27 ( 0. 0500)
BSC
SEATING
PLANE
0.25 ( 0. 0098)
0.10 ( 0. 0039)
0.51 ( 0. 0201)
0.31 ( 0. 0122)
1.75 ( 0. 0689)
1.35 ( 0. 0531)
0.50 ( 0. 0197)
0.25 ( 0. 0098)
1.27 ( 0. 0500)
0.40 ( 0. 0157)
0.25 ( 0. 0098)
0.17 ( 0. 0067)
COPLANARITY
0.10
45°
Figure 37. 14-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-14)
Dimensions shown in millimeters and (inches)
4.50
4.40
4.30
14 8
71
6.40
BSC
PIN 1
5.10
5.00
4.90
0.65
BSC
SEATING
PLANE
0.15
0.05 0.30
0.19
1.20
MAX
1.05
1.00
0.80 0.20
0.09
0.75
0.60
0.45
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-153-AB-1
Figure 38. 14-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-14)
Dimensions shown in millimeters
Data Sheet AD8661/AD8662/AD8664
Rev. E | Page 15 of 16
ORDERING GUIDE
Model1
Temperature Range
Package Description
Package Option
Branding
AD8661ARZ 40°C to +125°C 8-Lead Small Outline Package [SOIC_N] R-8
AD8661ARZ-REEL −40°C to +125°C 8-Lead Small Outline Package [SOIC_N] R-8
AD8661ARZ-REEL7 −40°C to +125°C 8-Lead Small Outline Package [SOIC_N] R-8
AD8661ACPZ-R2 −40°C to +8C 8-Lead Lead Frame Chip Scale Package [LFCSP] CP-8-13 A0M
AD8661ACPZ-REEL7 −40°C to +85°C 8-Lead Lead Frame Chip Scale Package [LFCSP] CP-8-13 A0M
AD8662ARZ −40°C to +125°C 8-Lead Small Outline Package [SOIC_N] R-8
AD8662ARZ-REEL −40°C to +125°C 8-Lead Small Outline Package [SOIC_N] R-8
AD8662ARZ-REEL7 −40°C to +125°C 8-Lead Small Outline Package [SOIC_N] R-8
AD8662ARMZ −40°C to +125°C 8-Lead Mini Small Outline Package [MSOP] RM-8 A10
AD8662ARMZ-REEL
−40°C to +125°C
8-Lead Mini Small Outline Package [MSOP]
RM-8
A10
AD8664ARZ −40°C to +125°C 14-Lead Standard Small Outline Package [SOIC_N] R-14
AD8664ARZ-REEL
−40°C to +125°C
14-Lead Standard Small Outline Package [SOIC_N]
R-14
AD8664ARZ-REEL7
−40°C to +125°C
14-Lead Standard Small Outline Package [SOIC_N]
R-14
AD8664ARUZ −40°C to +125°C 14-Lead Thin Shrink Small Outline Package [TSSOP] RU-14
AD8664ARUZ-REEL 40°C to +125°C 14-Lead Thin Shrink Small Outline Package [TSSOP] RU-14
1 Z = RoHS Compliant Part.
AD8661/AD8662/AD8664 Data Sheet
Rev. E | Page 16 of 16
NOTES
©20052016 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05200-0-7/16(E)