ICL7641

Features:

Wide Operating Voltage Range . . . . . . . . . . .       ±1V to ±8V

High Input Impedance . . . . . . . . . . . . . . . . . . . . . . .       ₁₀12
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


Application

Portable Instruments
Telephone Headsets
Hearing Aid/Microphone Amplifiers
Meter Amplifiers
Medical Instruments
High Impedance Buffers


Pinout




Specifications

Supply Voltage V+ to V-. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.3 to V+ +0.3V
Differential Input Voltage (Note 1) . . . . . . . . . [(V+ +0.3) - (V- -0.3)]V
Duration of Output Short Circuit (Note 2). . . . . . . . . . . . . . Unlimited


Description

The ICL7641 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 deal design tool when ultra low input current and low power dissipation are desired. The basic amplifier will operate at supply voltages ranging rom ±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.

The inputs of the ICL7641 are internally protected. Outputs are fully protected against short circuits to ground or to either supply. ACperformanceisexcellent, withaslewrateof1.6V/s, and unity gain bandwidth of 1MHz at I  = 1mA. Q 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.