ICL7621DCSA

Overview

The ICL7621DCSA+ is a dual-channel CMOS operational amplifier from the ICL7621D series, manufactured by Analog Devices / Maxim Integrated. It features a gain-bandwidth product of 44 kHz and a slew rate of 16 mV/us. The device operates with a supply voltage range of 1 V to 8 V or 2 V to 16 V, consuming 15 uA of quiescent current. Key electrical specifications include an input offset voltage of 15 mV, input bias current of 50 pA, common-mode rejection ratio of 60 dB, and input voltage noise density of 100 nV/sqrt Hz. It is housed in an SOIC-8 surface-mount package and functions within a commercial temperature range of 0 C to +70 C.

Feature Summary

• Monolithic low-power CMOS design providing ultra-low input bias current for precision applications
• Wide single or dual power supply voltage operation capability
• CMOS output stage capable of swinging to within millivolts of the supply rails

Applications

• Long time constant integrators
• Picoammeters
• Low droop rate sample/hold amplifiers
• Battery-powered instruments

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm pinout compatibility and performance characteristics. Confirm RoHS compliance status as required by project specifications. Check current availability and lifecycle status through authorized distributors, as this component may be subject to discontinuation or obsolescence notices.

Selection Notes

Select this component when designing circuits requiring ultra-low input bias currents and low power consumption. Ensure the application operates within the specified 0 C to +70 C temperature range. Verify that the 44 kHz bandwidth and 16 mV/us slew rate meet the signal processing requirements. Consider the SOIC-8 package constraints for PCB layout and thermal management.

Part Context

This part belongs to the ICL761X–ICL764X family of monolithic CMOS operational amplifiers. The family combines ultra-low input current with low-power operation over a wide supply voltage range. These amplifiers are designed for applications where input bias and offset currents must be minimized, such as high-impedance sensor interfaces and precision analog signal conditioning.

Replacement Considerations

Direct substitutes include the ICL7621DCSA+ variant which ensures lead-free compliance while maintaining identical electrical and mechanical specifications.