ICL7621, ICL7641, ICL7642
Data Sheet
April 1999
File Number 3403.3
Dual/Quad, Low Power CMOS Operational
Amplifiers
Features
• Wide Operating Voltage Range . . . . . . . . . . . ±1V to ±8V
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The ICL761X/762X/764X series is a family of monolithic
CMOS operational amplifiers. These devices provide the
designer with high performance operation at low supply
voltages and selectable quiescent currents. They are an
ideal design tool when ultra low input current and low power
dissipation are desired.
• High Input Impedance . . . . . . . . . . . . . . . . . . . . . . .10
Ω
• Input Current Lower Than BIFETs . . . . . . . . . . . 1pA (Typ)
• Output Voltage Swing . . . . . . . . . . . . . . . . . . . . V+ and V-
• Available as Duals and Quads (Refer to ICL7611 for Singles)
• Low Power Replacement for Many Standard Op Amps
The basic amplifier will operate at supply voltages ranging
from ±1V to ±8V, and may be operated from a single Lithium
cell. The output swing ranges to within a few millivolts of the
supply voltages.
Applications
• Portable Instruments
• Telephone Headsets
• Hearing Aid/Microphone Amplifiers
• Meter Amplifiers
The quiescent supply current of these amplifiers is set to 3
different ranges at the factory. Both amps of the dual
ICL7621 are set to an I of 100µA, while each amplifier of
Q
• Medical Instruments
• High Impedance Buffers
the quad ICL7641 and ICL7642 are set to an I of 1mA and
Q
10µA respectively. This results in power consumption as low
as 20µW per amplifier.
Pinouts
ICL7621 (PDIP, SOIC)
Of particular significance is the extremely low (1pA) input
TOP VIEW
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current, input noise current of 0.01pA/√Hz, and 10 Ω input
impedance. These features optimize performance in very
high source impedance applications.
OUT
1
2
3
4
8
7
6
5
V+
A
-IN
OUT
A
B
-
The inputs are internally protected. Outputs are fully
protected against short circuits to ground or to either supply.
+IN
-IN
B
A
-
V-
+IN
B
AC performance is excellent, with a slew rate of 1.6V/µs, and
unity gain bandwidth of 1MHz at I = 1mA.
Q
ICL7621 (METAL CAN)
TOP VIEW
Because of the low power dissipation, junction temperature
rise and drift are quite low. Applications utilizing these
features may include stable instruments, extended life
designs, or high density packages.
V+
8
OUT
1
3
7
OUT
B
A
-
-
Ordering Information
2
6
-IN
B
-IN
A
TEMP.
PKG.
NO.
o
PART NUMBER RANGE ( C)
PACKAGE
8 Ld PDIP -
+IN
5
+IN
B
A
ICL7621ACPA
ICL7621BCPA
ICL7621DCPA
ICL7621AMTV
ICL7621DCBA
ICL7621DCBA-T
0 to 70
0 to 70
0 to 70
E8.3
4
A Grade - I = 100µA
Q
V-
8 Ld PDIP -
E8.3
B Grade - I = 100µA
Q
ICL7641 (PDIP), ICL7642 (PDIP)
8 Ld PDIP -
E8.3
TOP VIEW
D Grade - I = 100µA
Q
-55 to 125 8 Pin Metal Can -
T8.C
M8.15
M8.15
OUT
1
2
3
4
5
6
7
14 OUT
D
A
A Grade - I = 100µA
Q
-
-
-
-
-IN
13 -IN
D
A
A
0 to 70
0 to 70
8 Ld SOIC -
D Grade - I = 100µA
Q
+IN
12 +IN
D
8 Ld SOIC - D Grade -
Tape and Reel -
V+
11 V-
I
= 100µA
Q
+IN
10 +IN
B
B
B
C
ICL7641ECPD
ICL7642ECPD
0 to 70
0 to 70
14 Ld PDIP - E Grade - E14.3
= 1mA
-IN
9
8
-IN
C
I
Q
14 Ld PDIP - E Grade - E14.3
OUT
OUT
C
I
= 10µA
Q
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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