ICL7641ECWE+T

Overview

The ICL7641ECWE+T is a quad CMOS operational amplifier manufactured by Analog Devices Inc./Maxim Integrated. It features four independent channels within a single package, designed for low-power applications. The device operates on dual supply voltages ranging from 1 V to 8 V or single supplies from 2 V to 16 V. Key electrical specifications include a gain-bandwidth product of 44 kHz, a slew rate of 16 mV/µs, and an input bias current of 50 pA. The input offset voltage is specified at 20 mV, with a common-mode rejection ratio of 60 dB. It consumes 15 µA of operating current per channel and exhibits an input voltage noise density of 100 nV/√Hz.

Feature Summary

• Quad-channel CMOS architecture providing four independent operational amplifiers in a compact surface-mount package.
• Low power consumption design suitable for battery-operated systems with minimal quiescent current draw.
• Wide single or dual supply voltage operation enabling flexibility across various system power rails.

Applications

• Battery-powered instrumentation circuits requiring low current drain
• General-purpose analog signal conditioning tasks
• Sensor interface stages where low power is critical

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging versus tube variants when sourcing. Confirm RoHS compliance status as manufacturing sources may vary. Check for obsolescence notices since this component family has faced discontinuation risks. Ensure the supplier provides valid traceability documentation for the Analog Devices/Maxim Integrated origin.

Selection Notes

Select this component when multiple low-power op-amps are needed in a small footprint. Compare against other quad CMOS amplifiers if higher bandwidth or lower offset voltage is required. Consider the 16-SOIC package constraints for PCB layout. Verify that the 44 kHz bandwidth meets the signal frequency requirements of the application.

Part Context

This part belongs to the ICL7641 series of low-power CMOS operational amplifiers. It is functionally similar to the ICL7641BCWE+ but with different electrical tolerances such as input offset voltage. The series is known for its compatibility with standard CMOS processes while offering performance advantages over older bipolar counterparts in low-power scenarios.

Replacement Considerations

Public confirmed substitute part numbers: ICL7641BCWE+, ICL7641CCPD+. Verify pinout compatibility and electrical parameter overlaps before substitution.