The ICL761X/762X 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. 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. The quiescent supply current of these amplifiers is set to 100µA at the factory. This results in power consumption as low as 200µW per amplifier. Of particular significance is the extremely low (1pA) input current, input noise current of 0. 01pA/√ Hz, and 1012Ω input impedance. These features optimize performance in very high source impedance applications. The inputs are internally protected. Outputs are fully protected against short circuits to ground or to either supply. 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.


  • 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 (Refer to ICL7611 for Singles)
  • Low Power Replacement for Many Standard Op Amps


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

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOICN Tube 1960
Active SOICN Reel 2500
Active PDIP Tube 3000

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ICL7621 Datasheet Datasheet PDF 495 KB
Application Notes & White Papers
How to Bias Op-Amps Correctly Application Note PDF 263 KB
AN1993: Voltage Feedback versus Current Feedback Operational Amplifiers Application Note PDF 564 KB
AN1694: The Four Basic Building Blocks of an Op Amp Application Note PDF 357 KB
AN535: Design Considerations for a Data Acquisition System (DAS) Application Note PDF 843 KB
AN9825: Power Crystal Oscillator With Feedback Stabilized Duty Cycle Application Note PDF 251 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
PCN12086 - Alternate Manufacturing Site for Assembly of the Listed Intersil PDIP Packaged Products -Amkor Technology, Philippines (ATP) Product Change Notice PDF 86 KB
TB514: Operational Amplifier Basics Other PDF 519 KB
General-purpose operational amplifiers and comparators Pamphlet Flyer PDF 1.11 MB