General Description
The ICL761X–ICL764X family of monolithic CMOS op
amps combine ultra-low input current with low-power
operation over a wide supply voltage range. With pin-
selectable quiescent currents of 10µA, 100µA, or
1000µA per amplifier, these op amps will operate from
±1V to ±8V power supplies, or from single supplies
from 2V to 16V. The CMOS outputs swing to within milli-
volts of the supply voltages.
The ultra-low bias current of 1pA makes this family of
op amps ideal for long time constant integrators,
picoammeters, low droop rate sample/hold amplifiers
and other applications where input bias and offset cur-
rents are critical. A low noise current of 0.01pA√Hz and
an input impedance of 1012Ωensure optimum perfor-
mance with very high source impedances in such
applications as pH meters and photodiode amplifiers.
Applications
Battery-Powered Instruments
Low-Leakage Amplifiers
Long-Time Constant Integrators
Low-Frequency Active Filters
Hearing Aids and Microphone Amplifiers
Low Droop Rate Sample/Hold Amplifiers
Picoammeters
Features
oPin-for-Pin Second Source
o1pA Typical Bias Current—4nA (max) at +125°C
o±1V to ±8V Wide Supply Voltage Range
oIndustry-Standard Pinouts
oProgrammable Quiescent Currents of 10µA,
100µA, and 1000µA
oMonolithic, Low-Power CMOS Design
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
________________________________________________________________
Maxim Integrated Products
1
TOP VIEW SINGLES—ICL7611/12/14/16
TO—99
(IOSET)*
V-
8
7
5
3
1
4
62
V+
OUTPUT
OFFSET
OFFSET
-IN
+IN
*EXTERNAL COMPENSATION (ICL7614)
8-PIN DIP
*PIN 7 CONNECTED TO CASE
OUT
(IOSET)*
OFFSET
IN
V+
1
2
8
7
+IN
V- OFFSET
3
4
6
5
Ordering Information
Pin Configuration
19-0942; Rev 3; 5/10
ICL76XX M N OP
VOS
SELECTION
TEMP
RANGE PKG CODE
A = 2mV C = 0°C to
70°C
TV= 8-Pin TO-
99
B = 5mV E = -40°C to
+85°C
PA = 8-Pin
Plastic Dip
C = 10mV M = -55°C to
+125°C
SA = 8-Pin
Small SO
D = 15mV JD = 14-Pin
CERDIP
E = 20mV PD = 14-Pin
Plastic Dip
SD = 14-Pin
Small SO
JE = 16-Pin
CERDIP
PE = 16-Pin
Plastic Dip
SE = 16-Pin
Small SO
WE – 16-Pin
Wide SO
Typical Operating Circuit appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
2 _______________________________________________________________________________________
PART TEMP RANGE PIN-PACKAGE
ICL761XACPA 0°C to +70°C 8 Plastic Dip
ICL761XACSA 0°C to +70°C 8 Slim SO
ICL761XACTV 0°C to +70°C TO-99 Metal Can
ICL761XAMTV -55°C to +125°C TO-99 Metal Can
ICL761XBCPA 0°C to +70°C 8 Plastic Dip
ICL761XBCSA 0°C to +70°C 8 Slim SO
ICL761XBCTV 0°C to +70°C TO-99 Metal Can
ICL761XBESA -40°C to +85°C 8 Slim SO
ICL761XBMTV -55°C to +125°C TO-99 Metal Can
ICL761XDCPA 0°C to +70°C 8 Plastic Dip
ICL761XDCSA 0°C to +70°C 8 Slim SO
ICL761XDCTV 0°C to +70°C TO-99 Metal Can
ICL761XDESA -40°C to +85°C 8 Slim SO
ICL7621ACPA 0°C to +70°C 8 Plastic Dip
ICL7621ACSA 0°C to +70°C 8 Slim SO
ICL7621ACTV 0°C to +70°C TO-99 Metal Can
ICL7621AMTV -55°C to +125°C TO-99 Metal Can
ICL7621BCPA 0°C to +70°C 8 Plastic Dip
PART TEMP RANGE PIN-PACKAGE
ICL7621BCSA 0°C to +70°C 8 Slim SO
ICL7621BCTV 0°C to +70°C TO-99 Metal Can
ICL7621BMTV -55°C to +125°C TO-99 Metal Can
ICL7621DCPA 0°C to +70°C 8 Plastic Dip
ICL7621DCSA 0°C to +70°C 8 Slim SO
ICL7621DCTV 0°C to +70°C TO-99 Metal Can
ICL7622ACPD 0°C to +70°C 14 Plastic Dip
ICL7622ACSD 0°C to +70°C 14 Slim SO
ICL7622ACJD 0°C to +70°C 14 CERDIP
ICL7622AMJD -55°C to +125°C 14 CERDIP
ICL7622BCPD 0°C to +70°C 14 Plastic Dip
ICL7622BCSA 0°C to +70°C 14 Slim SO
ICL7622BCJD 0°C to +70°C 14 CERDIP
ICL7622BMJD -55°C to +125°C 14 CERDIP
ICL7622DCPD 0°C to +70°C 14 Plastic Dip
ICL7622DCSD 0°C to +70°C 14 Slim SO
ICL7622DCJD 0°C to +70°C 14 CERDIP
Ordering Information (Single/Dual)
Note: X above is replaced by: 1, 2, 4, 8.
ICL7611
ICL7612
ICL7614
ICL7616
ICL7621
ICL7622
ICL7631
ICL7632
ICL7641
ICL7642
Compensated X X X X X X X X
Externally
Compensated X
Extended
CMVR XX
Offset null
capability XXXX X
Programmable
IQXX X XX
Fixed IQ-10µA X
Fixed IQ-
100µA XXX
Fixed IQ-1mA X
Ordering Information (continued)
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
_______________________________________________________________________________________ 3
TOP VIEW SINGLES—ICL7611/12/14/16
TO—99
(IOSET)*
V-
8
7
5
3
1
4
62
V+
OUTPUT
OFFSET
OFFSET
-IN
+IN
*EXTERNAL COMPENSATION (ICL7614)
8 LEAD
*PIN 7 CONNECTED TO CASE
OUT
(IOSET)*
OFFSET
-IN
V+
1
2
8
7
+IN
V- OFFSET
3
4
6
5
DUALS—ICL7621/22
TO—99
V+
V-
8
7
5
3
1
4
62
OUTB
-INB
+INB
OUTA
-INA
+INA
8 LEAD
-INB
V+
OUTA
-INA
OUTB
1
2
8
7
+INA
V- +INB
3
4
6
5
14 LEAD
NOTE: PINS 9 & 13 ARE INTERNALLY CONNECTED
V+
OFFSETA
-INA
+INA
V+
1
2
14
13
+INB
-INB OFFSETB
6
7
9
OUTB
OFFSETB 510
N.C.
V- 411
OUTA
OFFSETA312
8
A
-+
+-
B
+-
B
+-
A
Pin Configurations
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
4 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS (Single/Dual)
ELECTRICAL CHARACTERISTICS (Single/Dual)
(VSUPP = ±1.0V, IQ= 10µA, TA= +25°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Total Supply Voltage (V+ to V-) ...........................................+18V
Input Voltage ........................................(V+ + 0.3V) to (V- - 0.3V)
Differential Input Voltage (Note 1)......±(V+ + 0.3V) to (V- - 0.3V)
Duration of Output Short Circuit (Note 2) ......................Unlimited
Continuous Power Dissipation (TA= +25°C)
TO-99 Metal Can (derate 2mW/°C above +25°C) .......250mW
8-Pin Minidip (derate 2mW/°C above +25°C)..............250mW
14-Pin Plastic (derate 3mW/°C above +25°C) .............375mW
14-Pin CERDIP (derate 4mW/°C above +25°C)...........500mW
16-Pin Plastic (derate 3mW/°C above +25°C) .............375mW
16-Pin CERDIP (derate 4mW/°C above +25°C)...........500mW
Operating Temperature Ranges:
M Series.............................................................-55°C to +125°C
E Series................................................................-40°C to +85°C
C Series .................................................................-0°C to +70°C
Storage Temperature Range ............................-55°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow)
Lead(Pb)-Free Packages.............................................+260°C
Packages Containing Lead..........................................+240°C
ICL76XXA ICL76XXB
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
RS ≤ 100kΩ,
TA = +25°C 25
Input Offset Voltage VOS RS ≤ 100kΩ,
TMIN ≤ TA ≤ TMAX 37
mV
Temperature
Coefficient of VOS
ΔVOS/ΔTR
S ≤ 100kΩ10 15 µV/°C
TA = +25°C 0.5 30 0.5 30
Input Offset Current IOS 0°C ≤ TA ≤ +70°C 300 300 pA
TA = +25°C 1.0 50 1.0 50
Input Bias Current IBIAS 0°C ≤ TA ≤ +70°C 500 500 pA
Common-Mode
Voltage Range
(Except ICL7612/
ICL7616)
VCMR -0.4 +0.6 -0.4 +0.6 V
Extended Common-
Mode Voltage Range
(ICL7612 Only)
VCMR -1.1 +0.6 -1.1 +0.6 V
Extended Common-
Mode Voltage Range
(ICL7616 Only)
VCMR IQ = 10µA -1.3 -0.3 -1.3 -0.3 V
RL = 1MΩ, TA = +25°C ±0.98 ±0.98
Output Voltage Swing VOUT RL = 1MΩ, 0°C ≤ TA ≤
+70°C ±0.96 ±0.96 V
Note 1: Long-term offset voltage stability will be degraded if large input differential voltages are applied for long periods of time.
Note 2: The outputs may be shorted to ground or to either supply for VSUPP ≤10V. Care must be taken to insure that the dissipation
rating is not exceeded.
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (Single/Dual) (continued)
(VSUPP = ±1.0V, IQ= 10µA, TA= +25°C, unless otherwise noted.)
ICL76XXA ICL76XXB
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
VO = ±0.1V, RL = 1MΩ,
TA = +25°C 90 90
Large-Signal Voltage
Gain AVOL VO = ±0.1V, RL = 1MΩ,
0°C ≤ TA ≤ +70°C 80 80
dB
Unity-Gain
Bandwidth GBW 0.044 0.044 MHz
Input Resistance RIN 1012 1012 Ω
Common-Mode
Rejection Ratio CMRR RS ≤ 100kΩ80 80 dB
Power-Supply
Rejection Ratio PSRR RS ≤ 100kΩ80 80 dB
Input-Referred Noise
Voltage enRS = 100Ω, f = 1kHz 100 100 nV/√Hz
Input-Referred Noise
Current inRS = 100Ω, f = 1kHz 0.01 0.01 pA/√Hz
Supply Current (Per
Amplifier) ISUPP No signal, no load 6 15 6 15 µA
Slew Rate SR AVOL = 1, CL = 100pF,
VIN = 0.2VP-P, RL = 1MΩ0.016 0.016 V/µs
Rise Time trVIN = 50mV, CL = 100pF,
RL = 1MΩ20 20 µs
Overshoot Factor VIN = 50mV, CL = 100pF,
RL = 1MΩ55%
ELECTRICAL CHARACTERISTICS (Single/Dual)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL76XXA ICL76XXB ICL76XXD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
RS ≤ 100kΩ,
TA = +25°C 2515
Input Offset
Voltage VOS RS ≤ 100kΩ,
TMIN ≤ TA ≤ TMAX 3720
mV
Temperature
Coefficient of VOS
∆VOS/∆TR
S ≤ 100kΩ10 15 25 µV/°C
TA = +25°C 0.5 30 0.5 30 0.5 30
C: 0°C ≤ TA ≤
+70°C 300 300 300
E: -40°C ≤ TA ≤
+85°C 800 800 800
Input Offset
Current IOS
M: -55°C≤ TA ≤
+125°C 800 800 800
pA
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (Single/Dual) (continued)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL76XXA ICL76XXB ICL76XXD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
TA = +25°C 1.0 50 1.0 50 1.0 50
C: 0°C ≤ TA ≤
+70°C 400 400 400
E: -40°C ≤ TA ≤
+85°C 4000 4000 4000
Input Bias Current IBIAS
M: -55°C≤ TA ≤
+125°C 4000 4000 4000
pA
+4.4 +4.4 +4.4
IQ = 10µA (Note 3) -4.0 -4.0 -4.0
+4.2 +4.2 +4.2
IQ = 100µA (Note 3) -4.0 -4.0 -4.0
+3.7 +3.7 +3.7
Common-Mode
Voltage Range
(Except ICL7612/
ICL7616)
VCMR
IQ = 1mA (Note 3) -3.7 -3.7 -3.7
V
IQ = 10µA ±5.3 ±5.3 ±5.3
+5.3 +5.3 +5.3
IQ = 100µA -5.1 -5.1 -5.1
+5.3 +5.3 +5.3
Extended
Common-Mode
Voltage Range
(ICL7612 Only)
VCMR
IQ = 1mA -4.5 -4.5 -4.5
V
-5.3 -5.3 -5.3
IQ = 10µA +3.7 +3.7 +3.5
-5.1 -5.1 -5.1
IQ = 100µA +3.0 +3.0 +2.7
-4.5 -4.5 -4.5
Extended
Common-Mode
Voltage Range
(ICL7616 Only)
VCMR
IQ = 1mA +2.0 +2.0 +1.7
V
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
_______________________________________________________________________________________ 7
ELECTRICAL CHARACTERISTICS (Single/Dual) (continued)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL76XXA ICL76XXB ICL76XXD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
TA =
+25°C ±4.9 ±4.9 ±4.9
C: 0°C ≤
TA ≤
+70°C
±4.8 ±4.8 ±4.8
E: -40°C
≤ TA ≤
+85°C
±4.7 ±4.7 ±4.7
IQ =
10µA,
RL =
1MΩ
(Note 3)
M: -55°C
≤ TA ≤
+125°C
±4.7 ±4.7 ±4.7
TA =
+25°C ±4.9 ±4.9 ±4.9
C: 0°C ≤
TA ≤
+70°C
±4.8 ±4.8 ±4.8
E: -40°C
≤ TA ≤
+85°C
±4.5 ±4.5 ±4.5
IQ =
100µA,
RL =
100kΩ
M: -55°C
≤ TA ≤
+125°C
±4.5 ±4.5 ±4.5
TA =
+25°C ±4.5 ±4.5 ±4.5
C: 0°C ≤
TA ≤
+70°C
±4.3 ±4.3 ±4.3
E: -40°C
≤ TA ≤
+85°C
±4.0 ±4.0 ±4.0
Output Voltage
Swing VOUT
IQ =
1mA, RL
= 10kΩ
(Note 3)
M: -55°C
≤ TA ≤
+125°C
±4.0 ±4.0 ±4.0
V
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
8 _______________________________________________________________________________________
ICL76XXA ICL76XXB ICL76XXD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
TA =
+25°C 86 104 80 104 80 104
C: 0°C ≤
TA ≤
+70°C
80 75 75
E: -40°C
≤ TA ≤
+85°C
74 68 68
VO =
±4.0V
RL =
1MΩ,
IQ =
10µA
M: -55°C
≤ TA ≤
+125°C
74 68 68
TA =
+25°C 86 102 80 102 80 102
C: 0°C ≤
TA ≤
+70°C
80 75 75
E: -40°C
≤ TA ≤
+85°C
74 68 68
VO =
±4.0V,
RL =
100kΩ,
IQ =
100µA
M: -55°C
≤ TA ≤
+125°C
74 68 68
TA =
+25°C 80 83 76 83 76 83
C: 0°C ≤
TA ≤
+70°C
76 72 72
E: -40°C
≤ TA ≤
+85°C
72 68 68
Large-Signal
Voltage Gain AVOL
VO =
±4.0V,
RL =
10kΩ,
IQ =
1mA
(
Note 3
)
M: -55°C
≤ TA ≤
+125°C
72 68 68
dB
ELECTRICAL CHARACTERISTICS (Single/Dual) (continued)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
_______________________________________________________________________________________ 9
ICL76XXA ICL76XXB ICL76XXD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
IQ = 10µA (Note 3) 0.044 0.044 0.044
IQ = 100µA 0.48 0.48 0.48
Unity-Gain
Bandwidth GBW
IQ = 1mA (Note 3) 1.4 1.4 1.4
MHz
Input Resistance RIN 1012 1012 1012 Ω
RS ≤ 100kΩ,
IQ = 10µA (Note 3) 76 96 70 96 70 96
RS ≤ 100kΩ,
IQ = 100µA 76 91 70 91 70 91
Common-Mode
Rejection Ratio CMRR
RS ≤ 100kΩ,
IQ = 1mA (Note 3) 66 87 60 87 60 87
dB
RS ≤ 100kΩ,
IQ = 10µA (Note 3) 80 94 80 94 80 94
RS ≤ 100kΩ,
IQ = 100µA 80 86 80 86 80 86
Power-Supply
Rejection Ratio PSRR
RS ≤ 100kΩ,
IQ = 1mA (Note 3) 70 77 70 77 70 77
dB
Input-Referred
Noise Voltage enRS = 100Ω, f =
1kHz 100 100 100 nV/√Hz
Input-Referred
Noise Current inRS = 100Ω, f =
1kHz 0.01 0.01 0.01 pA/√Hz
IQ = 10µA
(Note 3) 0.01 0.02 0.01 0.02 0.01 0.02
IQ =
100µA 0.1 0.25 0.1 0.25 0.1 0.25
Supply Current
(Per Amplifier) ISUPP
No
signal,
no load
IQ = 1mA
(Note 3) 1.0 2.5 1.0 2.5 1.0 2.5
mA
Channel
Separation VO1 / VO2 AVOL = 100 120 120 120 dB
ELECTRICAL CHARACTERISTICS (Single/Dual) (continued)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
10 ______________________________________________________________________________________
ICL76XXA ICL76XXB ICL76XXD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
IQ = 10µA
(Note 3),
RL = 1MΩ
0.016 0.016 0.016
IQ =
100µA, RL
= 100kΩ
0.16 0.16 0.16
Slew Rate
(Note 4) SR
AVOL =
1, CL =
100pF,
VIN =
8VP-P IQ = 1mA
(Note 3),
RL =
10kΩ
1.6 1.6 1.6
V/µs
IQ = 10µA
(Note 3),
RL = 1MΩ
20 20 20
IQ =
100µA, RL
= 100kΩ
22 2
Rise Time
(Note 4) tr
VIN =
50mV,
CL =
100pF IQ = 1mA
(Note 3),
RL =
10kΩ
0.9 0.9 0.9
µs
IQ = 10µA
(Note 3),
RL = 1MΩ
55 5
IQ =
100µA, RL
= 100kΩ
10 10 10
Overshoot Factor
(Note 4)
VIN =
50mV,
CL =
100pF IQ = 1mA
(Note 3),
RL =
10kΩ
40 40 40
%
ELECTRICAL CHARACTERISTICS (Single/Dual) (continued)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
Note 3: ICL7611, ICL7612, ICL7616 only.
Note 4: ICL7814; 39pF from pin 6 to pin 8.
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
______________________________________________________________________________________ 11
TOP VIEW
ICL7631/32
16 LEAD
NOTE: PINS 5 & 15 ARE INTERNALLY CONNECTED
OUT
IOC SET
N.C.
-INA
V+
1
2
16
15
SET IOC
+INC V-
6
8
11
-INB
V+
-INC 710
IOB SET
512
+INB
OUTB 413
OUTA
+INA 314
9
+
-
A
+- A
+
-
C
+
-
B
ICL7641/42
16 LEAD WIDE S.O.
OUTC
OUTD
OUTA
-INA
-IND
1
2
16
15
-INB
N.C. N.C.
6
8
11
+INC
INB
OUTB 710
-INC
512
V-
V+ 413
+IND
+INA 314
9
+-
D
+- B+-
C
+- A
ICL7641/42
14 LEAD
OUTC
OUTD
OUTA
-INA
-IND
1
2
16
15
-INB 611
+INC
INB
OUTB 710
-INC
512
V-
V+ 413
+IND
+INA 314
+-
D
+- B+-
C
Pin Configurations
Ordering Information (Triple/Quad)
PART TEMP RANGE PIN-PACKAGE
ICL763XBCPE 0°C to +70°C 16 Plastic Dip
ICL763XBCSE 0°C to +70°C 16 Slim SO
ICL763XCCPE 0°C to +70°C 16 Plastic Dip
ICL763XCCSE 0°C to +70°C 16 Slim SO
ICL763XECPE 0°C to +70°C 16 Plastic Dip
ICL763XECSE 0°C to +70°C 16 Slim SO
ICL763XBCJE 0°C to +70°C 16 CERDIP
ICL763XCCJE 0°C to +70°C 16 CERDIP
ICL763XECJE 0°C to +70°C 16 CERDIP
ICL763XBMJE
-55°C to +125°C
16 CERDIP
ICL763XCMJE
-55°C to +125°C
16 CERDIP
PART TEMP RANGE PIN-PACKAGE
ICL764XBCPD
0°C to +70°C 14 Plastic Dip
ICL764XBCWE
0°C to +70°C 16 Wide SO
ICL764XCCPD 0°C to +70°C 14 Plastic Dip
ICL764XCCWE
0°C to +70°C 16 Wide SO
ICL764XECPD 0°C to +70°C 14 Plastic Dip
ICL764XECWE
0°C to +70°C 16 Wide SO
ICL764XBCJD 0°C to +70°C 14 CERDIP
ICL764XCCJD 0°C to +70°C 14 CERDIP
ICL764XECJD 0°C to +70°C 14 CERDIP
ICL764XBMJD
-55°C to +125°C
14 CERDIP
ICL764XCMJD
-55°C to +125°C
14 CERDIP
Note: X above is replaced by 1, 2.
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
12 ______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS (Triple/Quad)
ELECTRICAL CHARACTERISTICS (Triple/Quad)
(VSUPP = ±1.0V, IQ= 10µA, TA= +25°C, unless otherwise noted.) (Specifications apply to ICL7631/7632/7642 only.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Total Supply Voltage (V+ to V-) ...........................................+18V
Input Voltage ........................................(V+ + 0.3V) to (V- - 0.3V)
Differential Input Voltage (Note 5).......±|(V+ + 0.3V) - (V- - 0.3V)
Duration of Output Short Circuit (Note 6) ......................Unlimited
Continuous Power Dissipation (TA= +25°C)
TO-99 Metal Can (derate 2mW/°C above +25°C) .......250mW
8-Pin Minidip (derate 2mW/°C above +25°C)..............250mW
14-Pin Plastic (derate 3mW/°C above +25°C) .............375mW
14-Pin CERDIP (derate 4mW/°C above +25°C)...........500mW
16-Pin Plastic (derate 3mW/°C above +25°C) .............375mW
16-Pin CERDIP (derate 4mW/°C above +25°C)...........500mW
Operating Temperature Ranges:
M Series.............................................................-55°C to +125°C
E Series................................................................-40°C to +85°C
C Series .................................................................-0°C to +70°C
Storage Temperature Range ............................-55°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
ICL76XXB ICL76XXC
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
RS ≤ 100kΩ,
TA = +25°C 510
Input Offset Voltage VOS RS ≤ 100kΩ,
TMIN ≤ TA ≤ TMAX 712
mV
Temperature
Coefficient of VOS
∆VOS/∆TR
S ≤ 100kΩ15 20 µV/°C
TA = +25°C 0.5 30 0.5 30
Input Offset Current IOS 0°C ≤ TA ≤ +70°C 300 300 pA
TA = +25°C 1.0 50 1.0 50
Input Bias Current IBIAS 0°C ≤ TA ≤ +70°C 500 500 pA
Common-Mode
Voltage Range VCMR -0.4 +0.6 -0.4 +0.6 V
RL = 1MΩ, TA = +25°C ±0.98 ±0.98
Output Voltage
Swing VOUT RL = 1MΩ, 0°C ≤ TA ≤
+70°C ±0.96 ±0.96 V
VO = ±0.1V, RL = 1MΩ,
TA = +25°C 90 90
Large-Signal Voltage
Gain AVOL VO = ±0.1V, RL = 1MΩ,
0°C ≤ TA ≤ +70°C 80 80
dB
Unity-Gain
Bandwidth GBW 0.044 0.044 MHz
Input Resistance RIN 1012 1012 Ω
Common-Mode
Rejection Ratio CMRR RS ≤ 100kΩ80 80 dB
Note 5: Long-term offset voltage stability will be degraded if large input differential voltages are applied for long periods of time.
Note 6: The outputs may be shorted to ground or to either supply for VSUPP ≤10V. Care must be taken to insure that the
dissipation rating is not exceeded.
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
______________________________________________________________________________________ 13
ELECTRICAL CHARACTERISTICS (Triple/Quad) (continued)
(VSUPP = ±1.0V, IQ= 10µA, TA= +25°C, unless otherwise noted.) (Specifications apply to ICL7631/7632/7642 only.)
ICL76XXB ICL76XXC
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Power-Supply
Rejection Ratio PSRR 80 80 dB
Input-Referred Noise
Voltage enRS = 100Ω, f = 1kHz 100 100 nV/√Hz
Input-Referred Noise
Current inRS = 100Ω, f = 1kHz 0.01 0.01 pA/√Hz
Supply Current (Per
Amplifier) ISUPP No signal, no load 6 15 6 15 µA
Channel Separation VO1 / VO2 AVOL = 100 120 120 dB
Slew Rate SR AVOL = 1, CL = 100pF,
VIN = 0.2VP-P, RL = 1MΩ0.016 0.016 V/µs
Rise Time trVIN = 50mV, CL =
100pF, RL = 1MΩ20 20 µs
Overshoot Factor VIN = 50mV, CL =
100pF, RL = 1MΩ55%
ELECTRICAL CHARACTERISTICS (Triple/Quad)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL76XXB ICL76XXC ICL76XXE
PARAMETER SYMBOL CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX
UNITS
RS ≤ 100kΩ,
TA = +25°C 51020
Input Offset
Voltage VOS RS ≤ 100kΩ,
TMIN ≤ TA ≤ TMAX 71525
mV
Temperature
Coefficient of VOS ∆VOS/∆TR
S ≤ 100kΩ15 20 30 µV/°C
TA = +25°C 0.5 30 0.5 30 0.5 30
C: 0°C ≤ TA ≤
+70°C 300 300 300
Input Offset
Current IOS
M: -55°C≤ TA ≤
+125°C 800 800 800
pA
TA = +25°C 1.0 50 1.0 50 1.0 50
C: 0°C ≤ TA ≤
+70°C 500 500 500
Input Bias Current IBIAS
M: -55°C≤ TA ≤
+125°C 4000 4000 4000
pA
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
14 ______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (Triple/Quad) (continued)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL76XXB ICL76XXC ICL76XXE
PARAMETER SYMBOL CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX
UNITS
+4.4 +4.4 +4.4
IQ = 10µA (Note 7) -4.0 -4.0 -4.0
+4.2 +4.2 +4.2
IQ = 100µA (Note 9) -4.0 -4.0 -4.0
+3.7 +3.7 +3.7
Common-Mode
Voltage Range VCMR
IQ = 1mA (Note 8) -3.7 -3.7 -3.7
V
TA =
+25°C ±4.9 ±4.9 ±4.9
C: 0°C ≤
TA ≤
+70°C
±4.8 ±4.8 ±4.8
IQ =
10µA,
RL =
1MΩ
(Note 7) M: -55°C
≤ TA ≤
+125°C
±4.7 ±4.7 ±4.7
TA =
+25°C ±4.9 ±4.9 ±4.9
C: 0°C ≤
TA ≤
+70°C
±4.8 ±4.8 ±4.8
IQ =
100µA,
RL =
100kΩ
(Note 9) M: -55°C
≤ TA ≤
+125°C
±4.5 ±4.5 ±4.5
TA =
+25°C ±4.5 ±4.5 ±4.5
C: 0°C ≤
TA ≤
+70°C
±4.3 ±4.3 ±4.3
Output Voltage
Swing VOUT
IQ =
1mA, RL
= 10kΩ
(Note 8) M: -55°C
≤ TA ≤
+125°C
±4.0 ±4.0 ±4.0
V
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
______________________________________________________________________________________ 15
ELECTRICAL CHARACTERISTICS (Triple/Quad) (continued)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL76XXB ICL76XXC ICL76XXE
PARAMETER SYMBOL CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX
UNITS
TA =
+25°C 86 104 80 104 80 104
C: 0°C ≤
TA ≤
+70°C
80 75 75
VO =
±4.0V,
RL =
1MΩ,
IQ =
10µA
(Note 7)
M: -55°C
≤ TA ≤
+125°C
74 68 68
TA =
+25°C 86 102 80 102 80 102
C: 0°C ≤
TA ≤
+70°C
80 75 75
VO =
±4.0V,
RL =
100kΩ,
IQ =
100µA M: -55°C
≤ TA ≤
+125°C
74 68 68
TA =
+25°C 86 98 80 98 80 98
C: 0°C ≤
TA ≤
+70°C
80 75 75
Large-Signal
Voltage Gain AVOL
VO =
±4.0V,
RL =
10kΩ
(Note 8),
IQ =
1mA
(Note 7)
M: -55°C
≤ TA ≤
+125°C
74 68 68
dB
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
16 ______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (Triple/Quad) (continued)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL76XXB ICL76XXC ICL76XXE UNITS
PARAMETER SYMBOL CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX
I
Q
= 10µA (Note 7) 0.044 0.044 0.044
I
Q
= 100µA (Note 9) 0.48 0.48 0.48
Unity-Gain
Bandwidth G
BW
I
Q
= 1mA (Note 8) 1.4 1.4 1.4
MHz
Input Resistance R
IN
10
12
10
12
10
12
Ω
R
S
≤ 100kΩ,
I
Q
= 10µA (Note 7) 76 96 70 96 70 96
R
S
≤ 100kΩ,
I
Q
= 100µA 76 91 70 91 70 91
Common-Mode
Rejection Ratio CMRR
R
S
≤ 100kΩ,
I
Q
= 1mA (Note 8) 66 87 60 87 60 87
dB
R
S
≤ 100kΩ,
I
Q
= 10µA (Note 7) 80 94 80 94 80 94
R
S
≤ 100kΩ,
I
Q
= 100µA 80 86 80 86 80 86
Power-Supply
Rejection Ratio PSRR
R
S
≤ 100kΩ,
I
Q
= 1mA (Note 8) 70 77 70 77 70 77
dB
Input-Referred
Noise Voltage e
n
R
S
= 100Ω, f = 1kHz 100 100 100 nV/√Hz
Input-Referred
Noise Current i
n
R
S
= 100Ω, f = 1kHz 0.01 0.01 0.01 pA/√Hz
I
Q
= 10µA
(Note 7) 0.01 0.022 0.01 0.022 0.01 0.022
I
Q
=
100µA 0.1 0.25 0.1 0.25 0.1 0.25
Supply Current
(Per Amplifier) I
SUPP
No
signal,
no load
I
Q
= 1mA
(Note 8) 1.0 2.5 1.0 2.5 1.0 2.5
mA
Channel
Separation V
O1
/ V
O2
A
VOL
= 100 120 120 120 dB
I
Q
= 10µA
(Note 7),
R
L
= 1MΩ
0.016 0.016 0.016
I
Q
= 100µA,
R
L
= 100kΩ0.16 0.16 0.16
Slew Rate
(Note 10) SR
A
VOL
=
1, C
L
=
100pF,
V
IN
=
8V
P-P
I
Q
= 1mA
(Note 7),
R
L
= 10kΩ
1.6 1.6 1.6
V/µs
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
______________________________________________________________________________________ 17
ELECTRICAL CHARACTERISTICS (Triple/Quad) (continued)
(VSUPP = ±5.0V, TA= +25°C, unless otherwise noted.)
ICL76XXB ICL76XXC ICL76XXE
PARAMETER SYMBOL CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX
UNITS
IQ = 10µA
(Note 7),
RL = 1MΩ
20 20 20
IQ = 100µA,
RL = 100kΩ222
Rise Time
(Note 10) tr
VIN =
50mV,
CL =
100pF IQ = 1mA
(Note 8),
RL = 10kΩ
0.9 0.9 0.9
µs
IQ = 10µA
(Note 7),
RL = 1MΩ
555
IQ = 100µA,
RL = 100kΩ10 10 10
Overshoot Factor
(Note 10)
VIN =
50mV,
CL =
100pF IQ = 1mA
(Note 8),
RL = 10kΩ
40 40 40
%
Note 7: Does not apply to ICL7641.
Note 8: Does not apply to ICL7642.
Note 9: ICL7631/ICL7632 only.
Note 10: Does not apply to ICL7632.
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
18 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
______________________________________________________________________________________
19
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
20 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
______________________________________________________________________________________ 21
Detailed Description
Quiescent Current Selection
The voltage input to the IQpin of the single and triple
amplifiers selects a quiescent current (IQ) of 10µA,
100µA, or 1000µA. The dual and quad amplifiers have
fixed quiescent current (IQ) settings. Unity-gain band-
width and slew-rate increase with increasing quiescent
current, as does output sink current capability. The out-
put source current capability is independent of quies-
cent current.
The lowest IQsetting that results in sufficient bandwidth
and slew rate should be selected for each specific
application.
The IQpin of the single and triple amplifiers controls
the quiescent current as follows:
Input Offset Nulling
The input offset can be nulled by connecting a 25kΩ
pot between the OFFSET terminals with the wiper con-
nected to V+. At quiescent currents of 1mA and 100µA,
the nulling range provided is adequate for all VOS
selections. However, with higher values of VOS, and an
IQof 10µA, nulling may not be possible.
Frequency Compensation
All of the ICL7611 and ICL7621 series except the
ICL7614 are internally compensated for unity-gain
operation. The ICL7614 is externally compensated by a
capacitor connected between COMP and OUT pins,
with 39pF being greater than unity. The compensation
capacitor value may be reduced to increase the band-
width and slew rate. The ICL7132 is not compensated
and does not have frequency compensation pins. Use
only at gains 20 at IQof 1mA; at gains > 10 at IQof
100µA; at gain > 5 at IQof 10µA.
Output Loading Considerations
Approximately 70% of the amplifier’s quiescent current
flows in the output stage. The output swing can
approach the supply rails for output loads of 1MΩ,
100kΩ, and 10kΩ, using the output stage in a highly
linear Class A mode. Crossover distortion is avoided
and the voltage gain is maximized in this mode. The
output stage, however, can also be operated in Class
AB, which supplies higher output currents (see the
Typical Operating Characteristics
). The voltage gain
decreases and the output transfer characteristic is non-
linear during the transition from Class A to Class B
operation.
The output stage, with a gain that is directly proportion-
al to load impedance, approximates a transconduc-
tance amplifier. Approximately the same open-loop
gains are obtained at each of the IQsettings if corre-
sponding loads of 10kΩ, 100kΩ, and 1MΩare used.
The maximum output source current is higher than the
maximum sink current, and is independent of IQ.
Like most amplifiers, there are output loads for which
the amplifier stability is not guaranteed. In particular,
avoid capacitive loads greater than 100pF; and while
on the 1mA IQsetting, avoid loads less than 5kΩ. Since
the output stage is a transconductance output, very
large (>10µF) capacitive loads will create a dominant
pole and the output will be stable, even with loads that
are less than 5kΩ.
Extended Common-Mode Voltage Range
(ICL7612/ICL7616)
A common-mode voltage range that includes both V+
and V- is often desirable, especially in single-supply
operation. The ICL7612/ICL7616 extended common-
mode range op amps are designed specifically to meet
this need. The ICL7612 input common-mode voltage
range (CMVR) extends beyond both power-supply rails
when operated with at least 3V total supply and an IQ
of 10µA or 100µA. The ICL7616 CMVR includes the
negative supply voltage (or ground when operated with
a single supply) at an IQor 10µA or 100µA.
PC Board Layout
Careful PC board layout techniques must be used to
take full advantage of the very low bias current of the
ICL7611 family. The inputs should be encircled with a
low-impedance trace, or guard, that is at the same
potential as the inputs. In an inverting amplifier, this is
normally ground; in a unity-gain buffer connect the
guard to the output. A convenient way of guarding the
8-pin TO-99 version of the ICL7611 is to use a 10-pin
circle, with the two extra pads on either side of the
input pins to provide space for a guard ring (see Figure
8). Assembled boards should be carefully cleaned,
and if a high humidity environment is expected, confor-
mally coated.
IQ= 10µA IQpin to V+
IQ= 100µA IQpin between V- + 0.8V and V+ - 0.8V
IQ= 1mA IQpin to V-
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
22 ______________________________________________________________________________________
Single-Supply Operation
The ICL7611 family will operate from a single 2V to 16V
power supply. The common-mode voltage range of the
standard amplifier types when operated from a single
supply is 1.0V to (V+ - 0.6V) at 10µA IQ. At 100µA IQ,
the CMVR is 1.0V to (V+ - 0.8V), and at 1mA IQ, the
CMVR is 1.3V to (V+ - 1.3V). If this CMVR range is
insufficient, use the ICL7612, whose CMVR includes
both ground and V+, or the ICL7616, whose CMVR
includes ground.
A convenient way to generate a psuedo-ground at V+/2
is to use one op amp of a quad to buffer a V+/2 voltage
from a high-impedance resistive divider.
Low-Voltage Operation
Operation at VSUPP = ±1.0V is only guaranteed at IQ=
10µA. Output swings to within a few millivolts of the
supply rails are achievable for RL(> or =) 1MΩ.
Guaranteed input CMVR is ±0.6V minimum and typical-
ly +0.9V to -0.7V at VSUPP = ±1.0V. For applications
where greater common-mode range is desirable, see
the description of ICL7612 and ICL7616 above.
Applications Information
Note that in no case is IQ shown. The value of IQ must
be chosen by the designer with regard to frequency
response and power dissipation.
Figure 1. Instrumentation Amplifier—Adjust R3 to improve
CMRR. The offset of all three amplifiers is nulled by the offset
adjustment of A2.
Figure 2. Simple Follower—By using the ICL7612 in these
applications, the circuits will follow rail-to-rail inputs
-
-
+
+
A1
+
-
A2
R
R
R3
R2
R2
25kΩR3
R1
+18V
VOUT
+
-
A3
VIN
GAIN = ( +1)
R3
R
2R2
R1
ICL7612
+
-
VOUT
VIN
RL ≥ 10kΩ
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
______________________________________________________________________________________ 23
Figure 3. Level Detector—By using the ICL7612 in these appli-
cations, the circuits will follow rail-to-rail inputs.
+
-
VIN
VOUT
TO CMOS OR
LPTTL LOGIC
100kΩ
1MΩ
+5 +5
Figure 4. Photocurrent Integrator—Low-leakage currents allow
integration times up to several hours.
ICL7611
+
+-
-
1µF
IH5040
VOUT
Figure 5. Precise Triangle/Square Wave Generator—The fre-
quency and duty cycle are virtually independent of power sup-
ply.
+
-
+
-
1MΩ
1MΩ
880kΩ
DUTY CYCLE
1⁄2
ICL7621 1⁄2
ICL7621
V- V+
Figure 6. Averaging AC to DC Converter—Recommended for
Maxim’s ICL7106/ICL7107/ICL7109 A/D Converters.
1⁄2
ICL7621
+
-
1⁄2
ICL7621
-
+
10µF
2.2MΩ20kΩ
1MΩ
20kΩ
1.8kΩ = 5%
SCALE
ADJUST
10kΩ
0.05µF
VIN
COMMON
VON
TO
SUCCEEDING
INPUT
STAGE
VOL
Figure 7. Burn-In and Life Test Circuit Figure 8. Input Guard for TO-99
V+
IO
COMP
OUT
V-
+15V
+15V
10kΩ
10kΩ
100Ω
NOTE 1
NOTE 2
NOTES:
1. ICL7611, 7612, 7616, 7631, 7632
2. ICL7611, 7612, 7616, 7621, 7622, 7631, 7641, 7642
BOTTOM VIEW
IOSET
V
8
1
3
5
7
4
2
6
V+
OUTPUT
GUARD
INPUTS
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
24 ______________________________________________________________________________________
Figure 9. Low Droop Rate Sample and Hold—S2 improves
accuracy and acquisition time by including the voltage drop
across S1 inside the feedback loop. R1 closes the feedback
loop of A1 during the hold phase. The droop rate is [IBIAS(AZ)
+ ILEAK(S1) + ILEAK(S2)]/CHOLD.
ICL7622
A1 IH5141
1⁄2ICL7622
A2
1⁄2
S/H
CONTROL
INPUT
VIN
VOUT
CHOLD
100kΩ
R1
S1
S2
Figure 10. Long-Time Constant Integrator—With RIN = 1011
Ω
,
the time constant of this integrator is 100,000s. Since the input
voltage is converted to a current by RIN, the input voltage can
far exceed the power-supply range.
-
+
CINT
RIN
VIN
VOUT
1µF
Figure 11. Pico Ammeter—The response time of this curcuit is
RFB x CFB, where CFB is the stray capacitance between the
output and the inverting terminal of the amplifier.
Figure 12. 60Hz Twin “T“ Notch Filter—The low 1pA bias cur-
rent of the ICL7611 allows use of small 540pF and 270pF
capacitors, even with a notch frequency of 60Hz. The 60Hz
rejection is approximately 40dB.
+
-
CURRENT
SOURCE
CFB
RFB - 1011Ω
VO = 100mV/pA
+
-OUTPUT
VIN ICL7611
10MΩ10MΩ
270pF270pF
540pF
5MΩ
CINT
LONG TIME CONSTANT INTEGRATOR
(Detailed Circuit Diagram — Figure 10)
-
+
RIN
VOUT
VIN
Typical Operating Circuit
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
______________________________________________________________________________________ 25
Chip Topographies
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
TO99 T99-8 21-0022
8 PDIP P8-1 21-0043
8 SO S8-2 21-0041
8 CDIP J16-3 21-0045
14 PDIP P14-3 21-0043
14 CDIP J14-3 21-0045
16 PDIP P16-1 21-0043
16 SO S16-1 21-0041
16 Wide SO W16-2 21-0042
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
2 4/08 Removed all part numbers offered in die form from the Ordering Information 2, 11
3 5/10 Corrected letter grades in EC table headings 13–17
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
26
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