Click here to ask about the production status of specific part numbers.
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
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 pinselectable 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 currents are
critical. A low noise current of 0.01pA√Hz and an input
impedance of 1012Ω ensure optimum performance 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
Pin Configuration
TOP VIEW
8
-IN 2
+IN 3
7
V+
6 OUTPUT
4
● 1pA Typical Bias Current—4nA (max) at +125°C
● ±1V to ±8V Wide Supply Voltage Range
● Industry-Standard Pinouts
● Programmable Quiescent Currents of 10μA,
100μA, and 1000μA
● Monolithic, Low-Power CMOS Design
Ordering Information
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
JE = 16-Pin
CERDIP
(IOSET)*
1
● Pin-for-Pin Second Source
SD = 14-Pin
Small SO
SINGLES—ICL7611/12/14/16
TO—99
OFFSET
Features
PE = 16-Pin
Plastic Dip
SE = 16-Pin
Small SO
5 OFFSET
V-
WE – 16-Pin
Wide SO
*PIN 7 CONNECTED TO CASE
8-PIN DIP
+
8
(IOSET)*
2
7
V+
+IN
3
6
OUT
V-
4
5
OFFSET
OFFSET
1
IN
*EXTERNAL COMPENSATION (ICL7614)
19-0942; Rev 4; 7/21
Typical Operating Circuit appears at end of data sheet.
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Ordering Information (continued)
X
X
ICL7642
X
ICL7641
ICL7631
X
ICL7632
ICL7622
Externally
Compensated
ICL7621
X
ICL7616
ICL7612
X
ICL7614
ICL7611
Compensated
X
X
X
Extended
CMVR
X
Offset null
capability
X
X
Programmable
IQ
X
X
X
X
X
X
X
X
X
Fixed IQ-10µA
X
Fixed
IQ-100µA
X
X
X
Fixed IQ-1mA
X
Ordering Information (Single/Dual)
PART
TEMP RANGE
PIN-PACKAGE
PART
TEMP RANGE
PIN-PACKAGE
ICL761XACPA
0°C to +70°C
8 Plastic Dip
ICL7621BCSA
0°C to +70°C
8 Slim SO
ICL761XACSA
0°C to +70°C
8 Slim SO
ICL7621BCTV
0°C to +70°C
TO-99 Metal Can
ICL761XACTV
0°C to +70°C
TO-99 Metal Can
ICL7621BMTV
-55°C to +125°C
TO-99 Metal Can
ICL761XAMTV
-55°C to +125°C
TO-99 Metal Can
ICL7621DCPA
0°C to +70°C
8 Plastic Dip
ICL761XBCPA
0°C to +70°C
8 Plastic Dip
ICL7621DCSA
0°C to +70°C
8 Slim SO
ICL761XBCSA
0°C to +70°C
8 Slim SO
ICL7621DCTV
0°C to +70°C
TO-99 Metal Can
ICL761XBCTV
0°C to +70°C
TO-99 Metal Can
ICL7621DESA+
-40°C to +85°C
8 Slim SO
ICL761XBESA
-40°C to +85°C
8 Slim SO
ICL7622ACPD
0°C to +70°C
14 Plastic Dip
ICL761XBMTV
-55°C to +125°C
TO-99 Metal Can
ICL7622ACSD
0°C to +70°C
14 Slim SO
ICL761XDCPA
0°C to +70°C
8 Plastic Dip
ICL7622ACJD
0°C to +70°C
14 CERDIP
ICL761XDCSA
0°C to +70°C
8 Slim SO
ICL7622AMJD
-55°C to +125°C
14 CERDIP
ICL761XDCTV
0°C to +70°C
TO-99 Metal Can
ICL7622BCPD
0°C to +70°C
14 Plastic Dip
ICL761XDESA
-40°C to +85°C
8 Slim SO
ICL7622BCSA
0°C to +70°C
14 Slim SO
ICL7621ACPA
0°C to +70°C
8 Plastic Dip
ICL7622BCJD
0°C to +70°C
14 CERDIP
ICL7621ACSA
0°C to +70°C
8 Slim SO
ICL7622BMJD
-55°C to +125°C
14 CERDIP
ICL7621ACTV
0°C to +70°C
TO-99 Metal Can
ICL7622DCPD
0°C to +70°C
14 Plastic Dip
ICL7621AMTV
-55°C to +125°C
TO-99 Metal Can
ICL7622DCSD
0°C to +70°C
14 Slim SO
ICL7621BCPA
0°C to +70°C
8 Plastic Dip
ICL7622DCJD
0°C to +70°C
14 CERDIP
Note: X above is replaced by: 1, 2, 4, 8.
www.maximintegrated.com
Maxim Integrated │ 2
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Pin Configurations
TOP VIEW
SINGLES—ICL7611/12/14/16
TO—99
DUALS—ICL7621/22
TO—99
(IOSET)*
V+
OFFSET
8
1
-IN 2
7
V+
OUTA
4
5 OFFSET
14 LEAD
OUTB
7
-INA 2
6 OUTPUT
+IN 3
8
1
6 -INB
+INA 3
5 +IN
B
4
V-
V-
*PIN 7 CONNECTED TO CASE
8 LEAD
OFFSET
-IN
1
+
2
-INA
1
+INA
2
+
+
A
-
14
OFFSETA
13
V+
OFFSETA
3
12
OUTA
V-
4
11
N.C.
OFFSETB
5
10
OUTB
8 LEAD
8
7
(IOSET)*
V+
OUTA
-INA
1
2
+
8
-
A
+
+
+
+IN
3
6
OUT
V-
4
5
OFFSET
V+
B
7
OUTB
-
+INA
3
6
-INB
V-
4
5
+INB
B
-
+INB
6
9
V+
-INB
7
8
OFFSETB
NOTE: PINS 9 & 13 ARE INTERNALLY CONNECTED
*EXTERNAL COMPENSATION (ICL7614)
www.maximintegrated.com
Maxim Integrated │ 3
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Absolute Maximum Ratings (Single/Dual)
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
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.
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.
Electrical Characteristics (Single/Dual)
(VSUPP = ±1.0V, IQ = 10μA, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
Input Offset Voltage
Temperature
Coefficient of VOS
VOS
CONDITIONS
ICL76XXA
MIN
TYP
MIN
TYP
MAX
2
5
RS ≤ 100kΩ,
TMIN ≤ TA ≤ TMAX
3
7
UNITS
mV
10
TA = +25°C
0.5
IOS
MAX
RS ≤ 100kΩ,
TA = +25°C
ΔVOS/ΔT RS ≤ 100kΩ
Input Offset Current
ICL76XXB
0°C ≤ TA ≤ +70°C
15
30
0.5
300
TA = +25°C
1.0
µV/°C
30
300
50
1.0
50
pA
Input Bias Current
IBIAS
Common-Mode
Voltage Range
(Except ICL7612/
ICL7616)
VCMR
-0.4
+0.6
-0.4
+0.6
V
Extended CommonMode Voltage Range
(ICL7612 Only)
VCMR
-1.1
+0.6
-1.1
+0.6
V
Extended CommonMode Voltage Range
(ICL7616 Only)
VCMR
-1.3
-0.3
-1.3
-0.3
V
Output Voltage Swing
VOUT
www.maximintegrated.com
0°C ≤ TA ≤ +70°C
IQ = 10µA
500
500
RL = 1MΩ, TA = +25°C
±0.98
±0.98
RL = 1MΩ, 0°C ≤ TA ≤ +70°C
±0.96
±0.96
pA
V
Maxim Integrated │ 4
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Single/Dual) (continued)
(VSUPP = ±1.0V, IQ = 10μA, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
ICL76XXA
CONDITIONS
MIN
TYP
ICL76XXB
MAX
MIN
TYP
VO = ±0.1V, RL = 1MΩ,
TA = +25°C
90
90
VO = ±0.1V, RL = 1MΩ,
0°C ≤ TA ≤ +70°C
80
80
MAX
UNITS
Large-Signal Voltage
Gain
AVOL
Unity-Gain Bandwidth
GBW
0.044
0.044
MHz
Input Resistance
RIN
1012
1012
Ω
Common-Mode
Rejection Ratio
CMRR
RS ≤ 100kΩ
80
80
dB
Power-Supply
Rejection Ratio
PSRR
RS ≤ 100kΩ
80
80
dB
dB
Input-Referred Noise
Voltage
en
RS = 100Ω, f = 1kHz
100
100
nV/√Hz
Input-Referred Noise
Current
in
RS = 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 = 1MΩ
0.016
0.016
V/µs
Rise Time
tr
VIN = 50mV, CL = 100pF,
RL = 1MΩ
20
20
µs
VIN = 50mV, CL = 100pF,
RL = 1MΩ
5
5
%
Overshoot Factor
Electrical Characteristics (Single/Dual)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
Input Offset
Voltage
Temperature
Coefficient of VOS
Input Offset
Current
SYMBOL
VOS
CONDITIONS
ICL76XXA
MIN
TYP
MIN
TYP
MAX
MIN
TYP
MAX
2
5
15
RS ≤ 100kΩ,
TMIN ≤ TA ≤ TMAX
3
7
20
UNITS
mV
10
TA = +25°C
0.5
www.maximintegrated.com
MAX
ICL76XXD
RS ≤ 100kΩ,
TA = +25°C
ΔVOS/ΔT RS ≤ 100kΩ
IOS
ICL76XXB
15
30
0.5
25
30
0.5
µV/°C
30
C: 0°C ≤ TA ≤ +70°C
300
300
300
E: -40°C ≤ TA ≤
+85°C
800
800
800
M: -55°C ≤ TA ≤
+125°C
800
800
800
pA
Maxim Integrated │ 5
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Single/Dual) (continued)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
ICL76XXA
MIN
TA = +25°C
Input Bias Current
IBIAS
VCMR
1.0
50
MIN
TYP
MAX
1.0
50
4000
4000
4000
M: -55°C ≤ TA ≤
+125°C
4000
4000
4000
IQ = 100µA (Note 3)
IQ = 100µA
IQ = 100µA
IQ = 1mA
www.maximintegrated.com
MAX
E: -40°C ≤ TA ≤
+85°C
IQ = 1mA
VCMR
50
TYP
400
IQ = 10µA
Extended
Common-Mode
Voltage Range
(ICL7616 Only)
1.0
MIN
400
IQ = 10µA
VCMR
MAX
400
IQ = 1mA (Note 3)
Extended
Common-Mode
Voltage Range
(ICL7612 Only)
TYP
ICL76XXD
C: 0°C ≤ TA ≤ +70°C
IQ = 10µA (Note 3)
Common-Mode
Voltage Range
(Except ICL7612/
ICL7616)
ICL76XXB
+4.4
+4.4
+4.4
-4.0
-4.0
-4.0
+4.2
+4.2
+4.2
-4.0
-4.0
-4.0
+3.7
+3.7
+3.7
-3.7
-3.7
-3.7
±5.3
±5.3
±5.3
+5.3
+5.3
+5.3
-5.1
-5.1
-5.1
+5.3
+5.3
+5.3
-4.5
-4.5
-4.5
-5.3
-5.3
-5.3
+3.7
+3.7
+3.5
-5.1
-5.1
-5.1
+3.0
+3.0
+2.7
-4.5
-4.5
-4.5
+2.0
+2.0
+1.7
UNITS
pA
V
V
V
Maxim Integrated │ 6
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Single/Dual) (continued)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
IQ =
10µA,
RL =
1MΩ
(Note 3)
Output Voltage
Swing
VOUT
IQ =
100µA,
RL =
100kΩ
IQ =
1mA, RL
= 10kΩ
(Note 3)
www.maximintegrated.com
ICL76XXA
MIN
TYP
MAX
ICL76XXB
MIN
TYP
ICL76XXD
MAX
MIN
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
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
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
M: -55°C
≤ TA ≤
+125°C
±4.0
±4.0
±4.0
TYP
MAX
UNITS
V
Maxim Integrated │ 7
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Single/Dual) (continued)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
VO =
±4.0V
RL =
1MΩ,
IQ =
10µA
Large-Signal
Voltage Gain
AVOL
VO =
±4.0V,
RL =
100kΩ,
IQ =
100µA
VO =
±4.0V,
RL =
10kΩ,
IQ = 1mA
(Note 3)
www.maximintegrated.com
ICL76XXA
MIN
TYP
80
104
ICL76XXD
MIN
TYP
TA =
+25°C
86
104
C: 0°C
≤ TA ≤
+70°C
80
75
75
E: -40°C
≤ TA ≤
+85°C
74
68
68
M: -55°C
≤ TA ≤
+125°C
74
68
68
TA =
+25°C
86
C: 0°C
≤ TA ≤
+70°C
80
75
75
E: -40°C
≤ TA ≤
+85°C
74
68
68
M: -55°C
≤ TA ≤
+125°C
74
68
68
TA =
+25°C
80
C: 0°C
≤ TA ≤
+70°C
76
72
72
E: -40°C
≤ TA ≤
+85°C
72
68
68
M: -55°C
≤ TA ≤
+125°C
72
68
68
102
MAX
ICL76XXB
80
102
MAX
MIN
TYP
80
104
80
MAX
UNITS
102
dB
83
76
83
76
83
Maxim Integrated │ 8
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Single/Dual) (continued)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
Unity-Gain
Bandwidth
Input Resistance
Common-Mode
Rejection Ratio
Power-Supply
Rejection Ratio
SYMBOL
GBW
CONDITIONS
ICL76XXA
MIN
PSRR
MAX
MIN
TYP
ICL76XXD
MAX
MIN
TYP
IQ = 10µA (Note 3)
0.044
0.044
0.044
IQ = 100µA
0.48
0.48
0.48
IQ = 1mA (Note 3)
1.4
1.4
1.4
1012
1012
1012
RIN
CMRR
TYP
ICL76XXB
RS ≤ 100kΩ,
IQ = 10µA (Note 3)
76
96
70
96
70
96
RS ≤ 100kΩ,
IQ = 100µA
76
91
70
91
70
91
RS ≤ 100kΩ,
IQ = 1mA (Note 3)
66
87
60
87
60
87
RS ≤ 100kΩ,
IQ = 10µA (Note 3)
80
94
80
94
80
94
RS ≤ 100kΩ,
IQ = 100µA
80
86
80
86
80
86
RS ≤ 100kΩ,
IQ = 1mA (Note 3)
70
77
70
77
70
77
MAX
UNITS
MHz
Ω
dB
dB
Input-Referred
Noise Voltage
en
RS = 100Ω,
f = 1kHz
100
100
100
nV/√Hz
Input-Referred
Noise Current
in
RS = 100Ω,
f = 1kHz
0.01
0.01
0.01
pA/√Hz
Supply Current
(Per Amplifier)
Channel
Separation
ISUPP
No
signal,
no load
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
IQ = 1mA
(Note 3)
1.0
2.5
1.0
2.5
1.0
2.5
VO1 / VO2 AVOL = 100
www.maximintegrated.com
120
120
120
mA
dB
Maxim Integrated │ 9
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Single/Dual) (continued)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
Slew Rate
(Note 4)
SYMBOL
SR
Rise Time
(Note 4)
Overshoot Factor
(Note 4)
tr
CONDITIONS
AVOL =
1, CL =
100pF,
VIN =
8VP-P
VIN =
50mV,
CL =
100pF
VIN =
50mV,
CL =
100pF
ICL76XXA
MIN
TYP
MAX
ICL76XXB
MIN
TYP
ICL76XXD
MAX
MIN
TYP
IQ = 10µA
(Note 3),
RL = 1MΩ
0.016
0.016
0.016
IQ =
100µA, RL
= 100kΩ
0.16
0.16
0.16
IQ = 1mA
(Note 3),
RL = 10kΩ
1.6
1.6
1.6
IQ = 10µA
(Note 3),
RL = 1MΩ
20
20
20
IQ =
100µA, RL
= 100kΩ
2
2
2
IQ = 1mA
(Note 3),
RL = 10kΩ
0.9
0.9
0.9
IQ = 10µA
(Note 3),
RL = 1MΩ
5
5
5
IQ =
100µA, RL
= 100kΩ
10
10
10
IQ = 1mA
(Note 3),
RL = 10kΩ
40
40
40
MAX
UNITS
V/µs
µs
%
Note 3: AICL7611, ICL7612, ICL7616 only.
Note 4: ICL7814; 39pF from pin 6 to pin 8.
www.maximintegrated.com
Maxim Integrated │ 10
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Ordering Information (Triple/Quad)
PART
TEMP RANGE
PIN-PACKAGE
PART
TEMP RANGE
PIN-PACKAGE
ICL763XBCPE
0°C to +70°C
16 Plastic Dip
ICL764XBCPD
0°C to +70°C
14 Plastic Dip
ICL763XBCSE
0°C to +70°C
16 Slim SO
ICL764XBCWE
0°C to +70°C
16 Wide SO
ICL763XCCPE
0°C to +70°C
16 Plastic Dip
ICL764XCCPD
0°C to +70°C
14 Plastic Dip
ICL763XCCSE
0°C to +70°C
16 Slim SO
ICL764XCCWE
0°C to +70°C
16 Wide SO
ICL763XECPE
0°C to +70°C
16 Plastic Dip
ICL764XECPD
0°C to +70°C
14 Plastic Dip
ICL763XECSE
0°C to +70°C
16 Slim SO
ICL764XECWE
0°C to +70°C
16 Wide SO
ICL763XBCJE
0°C to +70°C
16 CERDIP
ICL764XBCJD
0°C to +70°C
14 CERDIP
ICL763XCCJE
0°C to +70°C
16 CERDIP
ICL764XCCJD
0°C to +70°C
14 CERDIP
ICL763XECJE
0°C to +70°C
16 CERDIP
ICL764XECJD
0°C to +70°C
14 CERDIP
ICL763XBMJE
-55°C to +125°C
16 CERDIP
ICL764XBMJD
-55°C to +125°C
14 CERDIP
ICL763XCMJE
-55°C to +125°C
16 CERDIP
ICL764XCMJD
-55°C to +125°C
14 CERDIP
Note: X above is replaced by: 1, 2.
Pin Configurations
TOP VIEW
ICL7631/32
ICL7641/42
16 LEAD
N.C.
1
-INA
2
+
16
IOC SET
+
+INA
3
OUTB
4
+
A
B
+
1
16
2
15
15
-IND
+INA
3
14
+IND
V+
4
13
V-
12
+INC
11
-INC
10
OUTC
-IND
-
+INA
3
14
+IND
13
+INB
V+
4
13
V-
12
+INC
INB
5
11
-INC
-INB
6
A
+
+
D
-
5
SET IOC
6
11
IOB SET
-INB
6
8
2
-INA
-
OUTA
INB
+INC
D
14
-INB
+
+
OUTD
1
V+
12
-
+
+
16
OUTA
-INA
5
7
A
OUTD
15
V+
-INC
14 LEAD
OUTA
-
ICL7641/42
16 LEAD WIDE S.O.
C
10
OUT
9
V-
-
B
+
+
C
-
OUTB
7
10
OUTC
N.C.
8
9
N.C.
OUTB
7
-
B
+
+
C
-
NOTE: PINS 5 & 15 ARE INTERNALLY CONNECTED
www.maximintegrated.com
Maxim Integrated │ 11
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Absolute Maximum Ratings (Triple/Quad)
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
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.
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.
Electrical Characteristics (Triple/Quad)
(VSUPP = ±1.0V, IQ = 10μA, TA = +25°C, unless otherwise noted.) (Specifications apply to ICL7631/7632/7642 only.)
PARAMETER
SYMBOL
Input Offset Voltage
Temperature
Coefficient of VOS
VOS
ΔVOS/ΔT
Input Offset Current
IOS
Input Bias Current
IBIAS
Common-Mode
Voltage Range
VCMR
Output Voltage
Swing
VOUT
CONDITIONS
ICL76XXB
MIN
TYP
ICL76XXC
MAX
RS ≤ 100kΩ,
TA = +25°C
5
RS ≤ 100kΩ,
TMIN ≤ TA ≤ TMAX
7
MIN
TYP
MAX
UNITS
10
mV
RS ≤ 100kΩ
15
TA = +25°C
0.5
0°C ≤ TA ≤ +70°C
12
20
30
0.5
300
TA = +25°C
1.0
0°C ≤ TA ≤ +70°C
50
+0.6
30
300
1.0
500
-0.4
µV/°C
50
500
-0.4
+0.6
RL = 1MΩ, TA = +25°C
±0.98
±0.98
RL = 1MΩ, 0°C ≤ TA ≤
+70°C
±0.96
±0.96
VO = ±0.1V, RL = 1MΩ,
TA = +25°C
90
90
VO = ±0.1V, RL = 1MΩ,
0°C ≤ TA ≤ +70°C
80
80
pA
pA
V
V
Large-Signal Voltage
Gain
AVOL
Unity-Gain
Bandwidth
GBW
0.044
0.044
MHz
Input Resistance
RIN
1012
1012
Ω
Common-Mode
Rejection Ratio
CMRR
80
80
dB
www.maximintegrated.com
RS ≤ 100kΩ
dB
Maxim Integrated │ 12
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Triple/Quad) (continued)
(VSUPP = ±1.0V, IQ = 10μA, TA = +25°C, unless otherwise noted.) (Specifications apply to ICL7631/7632/7642 only.)
PARAMETER
SYMBOL
Power-Supply
Rejection Ratio
ICL76XXB
CONDITIONS
MIN
TYP
PSRR
ICL76XXC
MAX
MIN
TYP
MAX
UNITS
80
80
dB
Input-Referred Noise
Voltage
en
RS = 100Ω, f = 1kHz
100
100
nV/√Hz
Input-Referred Noise
Current
in
RS = 100Ω, f = 1kHz
0.01
0.01
pA/√Hz
Supply Current
(Per Amplifier)
Channel Separation
ISUPP
No signal, no load
6
VO1 / VO2 AVOL = 100
15
6
15
µA
120
120
dB
Slew Rate
SR
AVOL = 1, CL = 100pF,
VIN = 0.2VP-P, RL = 1MΩ
0.016
0.016
V/µs
Rise Time
tr
VIN = 50mV, CL = 100pF,
RL = 1MΩ
20
20
µs
VIN = 50mV, CL = 100pF,
RL = 1MΩ
5
5
%
Overshoot Factor
Electrical Characteristics (Triple/Quad)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
Input Offset
Voltage
Temperature
Coefficient of VOS
Input Offset
Current
SYMBOL
VOS
CONDITIONS
MIN
TYP
TYP
MAX
MIN
TYP
MAX
20
RS ≤ 100kΩ,
TMIN ≤ TA ≤ TMAX
7
15
25
UNITS
mV
TA = +25°C
0.5
www.maximintegrated.com
MIN
10
15
IBIAS
MAX
ICL76XXE
5
ΔVOS/ΔT RS ≤ 100kΩ
IOS
ICL76XXC
RS ≤ 100kΩ,
TA = +25°C
20
30
0.5
30
30
0.5
µV/°C
30
C: 0°C ≤ TA ≤ +70°C
300
300
300
M: -55°C ≤ TA ≤
+125°C
800
800
800
TA = +25°C
Input Bias Current
ICL76XXB
1.0
50
1.0
50
1.0
pA
50
C: 0°C ≤ TA ≤ +70°C
500
500
500
M: -55°C ≤ TA ≤
+125°C
4000
4000
4000
pA
Maxim Integrated │ 13
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Triple/Quad) (continued)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
VCMR
Output Voltage
Swing
VOUT
IQ =
1mA, RL
= 10kΩ
(Note 8)
www.maximintegrated.com
MAX
MIN
TYP
MAX
MIN
+4.4
-4.0
-4.0
-4.0
+4.2
+4.2
+4.2
-4.0
-4.0
-4.0
+3.7
+3.7
+3.7
-3.7
-3.7
-3.7
TA =
+25°C
±4.9
Q4.9
Q4.9
C: 0°C
≤ TA ≤
+70°C
±4.8
±4.8
±4.8
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
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
M: -55°C
≤ TA ≤
+125°C
±4.0
±4.0
±4.0
IQ = 1mA (Note 8)
IQ =
100µA,
RL =
100kΩ
(Note 9)
TYP
ICL76XXE
+4.4
IQ = 100µA (Note 9)
IQ =
10µA,
RL =
1MΩ
(Note 7)
MIN
ICL76XXC
+4.4
IQ = 10µA (Note 7)
Common-Mode
Voltage Range
ICL76XXB
TYP
MAX
UNITS
V
V
Maxim Integrated │ 14
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Triple/Quad) (continued)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
VO =
±4.0V,
RL =
1MΩ,
IQ =
10µA
(Note 7)
Large-Signal
Voltage Gain
AVOL
VO =
±4.0V,
RL =
100kΩ,
IQ =
100µA
VO =
±4.0V,
RL =
10kΩ
(Note 8),
IQ = 1mA
(Note 7)
www.maximintegrated.com
ICL76XXB
TYP
TA =
+25°C
86
104
C: 0°C
≤ TA ≤
+70°C
80
75
75
M: -55°C
≤ TA ≤
+125°C
74
68
68
TA =
+25°C
86
C: 0°C
≤ TA ≤
+70°C
80
75
75
M: -55°C
≤ TA ≤
+125°C
74
68
68
TA =
+25°C
86
C: 0°C
≤ TA ≤
+70°C
80
75
75
M: -55°C
≤ TA ≤
+125°C
74
68
68
98
MIN
TYP
80
104
ICL76XXE
MIN
102
MAX
ICL76XXC
80
80
102
98
MAX
MIN
TYP
80
104
80
80
MAX
UNITS
102
dB
98
Maxim Integrated │ 15
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Triple/Quad) (continued)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
Unity-Gain
Bandwidth
Input Resistance
Common-Mode
Rejection Ratio
Power-Supply
Rejection Ratio
SYMBOL
GBW
CONDITIONS
ICL76XXB
MIN
PSRR
MAX
MIN
TYP
ICL76XXE
MAX
MIN
TYP
IQ = 10µA (Note 7)
0.044
0.044
0.044
IQ = 100µA (Note 9)
0.48
0.48
0.48
IQ = 1mA (Note 8)
1.4
1.4
1.4
1012
1012
1012
RIN
CMRR
TYP
ICL76XXC
RS ≤ 100kΩ,
IQ = 10µA (Note 7)
76
96
70
96
70
96
RS ≤ 100kΩ,
IQ = 100µA
76
91
70
91
70
91
RS ≤ 100kΩ,
IQ = 1mA (Note 8)
66
87
60
87
60
87
RS ≤ 100kΩ,
IQ = 10µA (Note 7)
80
94
80
94
80
94
RS ≤ 100kΩ,
IQ = 100µA
80
86
80
86
80
86
RS ≤ 100kΩ,
IQ = 1mA (Note 8)
70
77
70
77
70
77
UNITS
MAX
MHz
Ω
dB
dB
Input-Referred
Noise Voltage
en
RS = 100Ω, f = 1kHz
100
100
100
nV/√Hz
Input-Referred
Noise Current
in
RS = 100Ω, f = 1kHz
0.01
0.01
0.01
pA/√Hz
IQ = 10µA
(Note 7)
0.01
0.022
0.01
0.022
0.01
0.022
IQ =
100µA
0.1
0.25
0.1
0.25
0.1
0.25
IQ = 1mA
(Note 8)
1.0
2.5
1.0
2.5
1.0
2.5
Supply Current
(Per Amplifier)
Channel
Separation
ISUPP
No
signal,
no load
VO1 / VO2 AVOL = 100
IQ = 10µA
(Note 7),
RL = 1MΩ
Slew Rate
(Note 10)
SR
www.maximintegrated.com
AVOL =
1, CL = IQ =
100pF, 100µA, RL
VIN =
= 100kΩ
8VP-P
IQ = 1mA
(Note 7),
RL = 10kΩ
120
120
120
0.016
0.016
0.016
0.16
0.16
0.16
1.6
1.6
1.6
mA
dB
V/µs
Maxim Integrated │ 16
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Electrical Characteristics (Triple/Quad) (continued)
(VSUPP = ±5.0V, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
Rise Time
(Note 10)
VIN =
50mV,
CL =
100pF
tr
VIN =
50mV,
CL =
100pF
Overshoot Factor
(Note 10)
Note
Note
Note
Note
CONDITIONS
ICL76XXB
MIN
TYP
MAX
ICL76XXC
MIN
TYP
ICL76XXE
MAX
MIN
TYP
IQ = 10µA
(Note 7),
RL = 1MΩ
20
20
20
IQ = 100µA,
RL = 100kΩ
2
2
2
IQ = 1mA
(Note 8),
RL = 10kΩ
0.9
0.9
0.9
IQ = 10µA
(Note 7),
RL = 1MΩ
5
5
5
IQ = 100µA,
RL = 100kΩ
10
10
10
IQ = 1mA
(Note 8),
RL = 10kΩ
40
40
40
MAX
UNITS
µs
%
7: Does not apply to ICL7641.
8: Does not apply to ICL7642.
9: ICL7631/ICL7632 only.
10: Does not apply to ICL7632.
Typical Operating Characteristics
4
2
0
VSUPP = 10 VOLTS
IQ = 1mA
-75
-50
-25
0
+25
+50 +100 +125
FREE-AIR TEMPERATURE – °C
www.maximintegrated.com
1M
Ω
—
10
8
kΩ
10
RL = │2│kΩ
L=
6
12
10
0k
Ω
RL = 10kΩ
8
TA = │+│25°C
IQ = 1mA
14
R
RL = 100kΩ
10
16
L=
12
MAXIMUM PEAK-TO-PEAK
OUTPUT VOLTAGE AS A
FUNCTION OF SUPPLY VOLTAGE
R
MAXIMUM PEAK-TO-PEAK
VOLTAGE AS A FUNCTION OF
FREE-AIR TEMPERATURE
MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE – V
MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE – V
(TA = +25°C, unless otherwise noted.)
6
4
2
2
4
6
8
10
12
14
16
SUPPLY VOLTAGE – VOLTS
Maxim Integrated │ 17
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
SUPPLY CIRRENT – µA
10k
TA = +25°C
NO LOAD
NO SIGNAL
1k
IQ = 1mA
IQ = 100µA
100
IQ = 10µA
10
1
MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE – V
SUPPLY CURRENT PER AMPLIFIER
AS A FUNCTION OF SUPPLY VOLTAGE
0
2
4
6
8
10
12
14
16
PEAK-TO-PEAK OUTPUT VOLTAGE
AS A FUNCTION OF FREQUENCY
16
TA = +25°C
14
IQ = 1mA
IQ = 10µA
IQ = 100µA
12
10
VSUPP = 16V
8
VSUPP = 10V
6
4
2
0
VSUPP = + 2V
100
1k
10k
POWER SUPPLY REJECTION
RATIO AS A FUNCTION OF
FREE-AIR TEMPERATURE
IQ = 1mA
95
90
IQ = 100µA
85
IQ = 10µA
80
75
70
65
-75
DIFFERENTIAL VOLTAGE GAIN
107
-50
-25
0
RL = 10kΩ
IQ = 1mA
VSUPP = 10 VOLTS
VOUT = 8 VOLTS
-75
-50
-25
0
+25 +50 +75 +100 +125
MAXIMUM OUTPUT
SINK CURRENT AS A
FUNCTION OF SUPPLY VOLTAGE
0.01
IQ = 1mA
0°
45°
PHASE SHIFT
│IQ = 1mA│
90°
135°
IQ = 10µA
0.1
10
LARGE SIGNAL DIFFERENTIAL
VOLTAGE GAIN AND PHASE SHIFT
AS A FUNCTION OF FREQUENCY
103
1
RL = 100kΩ
IQ = 100µA
FREE-AIR TEMPERATURE – °C
104
10
100
FREE-AIR TEMPERATURE – °C
105
102
10M
RL = 1MΩ
IQ = 10µA
1
+25 +50 +75 +100 +125
VSUPP = 16V
IQ = 100µA
106
1M
LARGE SIGNAL DIFFERENTIAL
VOLTAGE GAIN AS A FUNCTION
OF FREE-AIR TEMPERATURE
1000
VSUPP = 10V
DIFFERENTIAL VOLTAGE GAIN – V/mV
100
100k
FREQUENCY – Hz
1
10
100
1k
10k
FREQUENCY – Hz
www.maximintegrated.com
100k
1M
180°
MAXIMUM OUTPUT SINK CURRENT – mA
SUPPLY VOLTAGE REJECTION RATIO – dB
SUPPLY VOLTAGE – VOLTS
IQ = 10µA
0.1
IQ = 100µA
1.0
10
IQ = 1mA
0
2
4
6
8
10
12
14
16
SUPPLY VOLTAGE – VOLTS
Maxim Integrated │ 18
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
100
10
1.0
-50
105
-25
0
+25
+50
+75 +100 +125
600
EQUIVALENT INPUT NOISE VOLTAGE
AS A FUNCTION OF FREQUENCY
TA = +25°C
3V ≤ VSUPP ≤ 16V
500
400
300
200
100
0
10
100
1k
10k
100k
FREE-AIR TEMPERATURE – °C
FREQUENCY – Hz
COMMON MODE REJECTION
RATIO AS A FUNCTION
OF FREE-AIR TEMPERATURE
SUPPLY CURRENT PER
AMPLIFIER AS A FUNCTION OF
FREE-AIR TEMPERATURE
100
IQ = 10µA
95
IQ = 100µA
90
IQ = 1mA
104
VSUPP = 10V
SUPPLY CURRENT – µA
COMMON MODE REJECTION RATIO – dB
0.1
85
80
VSUPP = 10 VOLTS
NO LOAD
NO SIGNAL
IQ = 1mA
103
IQ = 100µA
102
IQ = 10µA
10
75
70
MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE – V
VSUPP = 10V
-75
16
-50
-25
0
12
-25
0
+25
+50
+75 +100 +125
FREE-AIR TEMPERATURE – °C
MAXIMUM PEAK-TO-PEAK OUTPUT
VOLTAGE AS A FUNCTION OF
LOAD RESISTANCE
MAXIMUM OUTPUT/SOURCE
CURRENT AS A FUNCTION
OF SUPPLY VOLTAGE
10
8
6
4
2
1
-50
FREE-AIR TEMPERATURE – °C
VSUPP = 10 VOLTS
TA = 25°C
IQ = 1mA
14
1
+25 +50 +75 +100 +125
MAXIMUM OUTPUT SOURCE CURRENT – mA
INPUT BIAS CURRENT – pA
1000
EQUIVALENT INPUT NOISE VOLTAGE – nV √Hz
INPUT BIAS CURRENT AS A
FUNCTION OF TEMPERATURE
0.1
1.0
10
LOAD RESISTANCE – kΩ
www.maximintegrated.com
100
40
VSUPP = 10V
VOUT = V”
ALL IQ = SETINGS
30
20
10
0
0
2
4
6
8
10
12
14
16
SUPPLY VOLTAGE – VOLTS
Maxim Integrated │ 19
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
VOLTAGE FOLLOWER LARGE
SIGNAL PULSE RESPONSE
6
8
VSUPP = 10V
RL = 100k
CL = 100pF
TA = -25°C
IQ = 1mA
4
INPUT AND OUTPUT VOLTAGE – V
INPUT AND OUTPUT VOLTAGE – VOLTS
8
VOLTAGE FOLLOWER LARGE
SIGNAL PULSE RESPONSE
2
OUTPUT
0
-2
INPUT
-4
-6
0
2
4
6
8
4
2
OUTPUT
0
-2
INPUT
-4
-6
12
10
VSUPP = 10V
RL = 100k
CL = 100pF
TA = -25°C
IQ = 100µA
6
0
20
40
60
80
100
120
TIME – µs
TIME – µs
VOLTAGE FOLLOWER LARGE
SIGNAL PULSE RESPONSE
INPUT AND OUTPUT VOLTAGE – V
8
6
VSUPP = 10V
RL = 1M
CL = 100pF
TA = -25°C
IQ = 10µA
4
2
OUTPUT
0
INPUT
-2
-4
-6
0
200
400
600
800 1000 1200
TIME – µs
www.maximintegrated.com
Maxim Integrated │ 20
ICL761X–ICL764X
Detailed Description
Quiescent Current Selection
The voltage input to the IQ pin 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 bandwidth and slew-rate increase with increasing quiescent
current, as does output sink current capability. The output
source current capability is independent of quiescent
current.
The lowest IQ setting that results in sufficient bandwidth
and slew rate should be selected for each specific
application.
The IQ pin of the single and triple amplifiers controls the
quiescent current as follows:
IQ = 10μA
IQ pin to V+
IQ = 100μA
IQ pin between V- + 0.8V and V+ - 0.8V
IQ = 1mA
IQ pin to V
Input Offset Nulling
The input offset can be nulled by connecting a 25kΩ pot
between the OFFSET terminals with the wiper connected
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 IQ of 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 bandwidth and slew rate. The
ICL7132 is not compensated and does not have frequency compensation pins. Use only at gains 20 at IQ of 1mA;
at gains > 10 at IQ of 100μA; at gain > 5 at IQ of 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
www.maximintegrated.com
Single/Dual/Triple/Quad
Operational Amplifiers
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 proportional
to load impedance, approximates a transconductance
amplifier. Approximately the same open-loop gains are
obtained at each of the IQ settings if corresponding loads
of 10kΩ, 100kΩ, and 1MΩ are 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 IQ setting, 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 IQ
or 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, conformally coated.
Maxim Integrated │ 21
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
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.
+
+
-
R
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 typically +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.
R3
A1
R2
R1
VIN
R
+18V
-
+
A3
VOUT
VIN
+
ICL7612
VOUT
-
R2
R3
25kΩ
+
-
RL ≥ 10kΩ
A2
(
GAIN = R3 2R2 +1
R R1
)
Figure 1. Instrumentation Amplifier—Adjust R3 to improve
CMRR. The offset of all three amplifiers is nulled by the offset
adjustment of A2.
www.maximintegrated.com
Figure 2. Simple Follower—By using the ICL7612 in these
applications, the circuits will follow rail-to-rail inputs
Maxim Integrated │ 22
ICL761X–ICL764X
+5
Single/Dual/Triple/Quad
Operational Amplifiers
IH5040
+5
VIN
-
-
VOUT
TO CMOS OR
LPTTL LOGIC
+
100kΩ
1µF
+
ICL7611
-
VOUT
+
1MΩ
Figure 3. Level Detector—By using the ICL7612 in these
applications, the circuits will follow rail-to-rail inputs.
Figure 4. Photocurrent Integrator—Low-leakage currents allow
integration times up to several hours.
1MΩ
1MΩ
-
0.05µF
-
+
1⁄ 2
ICL7621
+
V-
2.2MΩ
VON
20kΩ
VIN
1⁄ 2
ICL7621
1MΩ
10kΩ
+
1⁄
2
ICL7621
V+
DUTY CYCLE
COMMON
10µF
TO
SUCCEEDING
INPUT
STAGE
20kΩ
1.8kΩ = 5%
SCALE
ADJUST
VOL
+
1⁄
2
ICL7621
880kΩ
Figure 5. Precise Triangle/Square Wave Generator—The
frequency and duty cycle are virtually independent of power
supply.
Figure 6. Averaging AC to DC Converter—Recommended for
Maxim’s ICL7106/ICL7107/ICL7109 A/D Converters.
+15V
+15V
BOTTOM VIEW
100Ω
10kΩ
NOTE 1
V+
NOTE 2
IO
COMP
OUT
10kΩ
V+
IOSET
7
OUTPUT
8
6
1
5
2
V-
3
V
NOTES:
1. ICL7611, 7612, 7616, 7631, 7632
2. ICL7611, 7612, 7616, 7621, 7622, 7631, 7641, 7642
Figure 7. Burn-In and Life Test Circuit
www.maximintegrated.com
IN
PU
TS
4
GUARD
Figure 8. Input Guard for TO-99
Maxim Integrated │ 23
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
S/H
CONTROL
INPUT
CINT
1µF
100kΩ
R1
1⁄
S2
S1
2
ICL7622
A1
1⁄
RIN
2
ICL7622
A2
VIN
VOUT
-
VOUT
+
IH5141
CHOLD
VIN
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.
Figure 10. Long-Time Constant Integrator—With RIN = 1011Ω,
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.
CFB
10MΩ
RFB - 1011Ω
OUTPUT
-
10MΩ
+
VIN
ICL7611
540pF
CURRENT
SOURCE
+
VO = 100mV/pA
5MΩ
270pF
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.
270pF
Figure 12. 60Hz Twin “T“ Notch Filter—The low 1pA bias
current of the ICL7611 allows use of small 540pF and 270pF
capacitors, even with a notch frequency of 60Hz. The 60Hz
rejection is approximately 40dB.
Typical Operating Circuit
CINT
RIN
VIN
-
VOUT
+
LONG TIME CONSTANT INTEGRATOR
(Detailed Circuit Diagram — Figure 10)
www.maximintegrated.com
Maxim Integrated │ 24
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Chip Topographies
ICL7621/22
DUAL
ICL7611/12/14/16
SINGLE
0.055”
(1.40mm)
7
V+
0.083”
(2.11mm)
NC OR V+ OUT
OUTA
B
11
12
12
6
OUTPUT
BIAS/COMP
8
V+
13
OFFSET
5
0.061”
V–
(1.55mm)
4
+ INPUT
3
OFFSET
1
– INPUT
2
V+
9
OFFSETB
8
OFFSETA
14
–INA
1
–INB
7
+INA
2
ICL7631/32
TRIPLE
12
-INB
V– OFFSETB +INB
4
3
6
OFFSETA
3
ICL7461/42
QUAD
0.100”
(2.54mm)
14 13
OUTA +INB
0.061”
(2.11mm)
11
IQBSET OUTC
15
V+
16
IQ1SET
+INC
10
V–
2
INA
–INC
9
0.099”
(2.51mm)
OUTC
8
–INB
6
OUTB
7
+INB
5
9
0.076”
(1.93mm)
V+
4
V–
11
0.079”
(2.01mm)
+INC 8
3
+INA
–INC 7
OUTB
4
V+
5
IQCSET
6
+INA
3
–IND
12
–INB
13
OUTD
14
OUTA
1
–INA
2
Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.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
OUTLINE NO.
LAND PATTERN NO.
TO99
T99-8
21-0022
—
8 PDIP
P8-1
21-0043
—
8 SO
S8-2
21-0041
90-0096
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
90-0097
16 Wide SO
W16-2
21-0042
90-0107
www.maximintegrated.com
Maxim Integrated │ 25
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
2
4/08
Removed all part numbers offered in die form from the Ordering Information
3
5/10
Corrected letter grades in EC table headings
4
7/21
Added ICL7621DESA+ part number, temperature range and pin-package to
Ordering Information, updated Package Information table.
DESCRIPTION
2, 11
13–17
1, 2, 25, 26
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2021 Maxim Integrated Products, Inc. │ 26
工商网监
湘ICP备2023018690号
