ICL7621DCBAZ-T

Overview

The ICL7621DCBAZ-T is a dual-channel CMOS operational amplifier from the Renesas Electronics ICL761X–ICL764X family. It features ultra-low input bias current of 50 pA and low power consumption with a supply current of 1 mA per channel. The device operates within a wide voltage range, supporting single supplies from 2 V to 16 V or dual supplies from ±1 V to ±8 V. Key electrical parameters include a gain-bandwidth product of 1.4 MHz, a slew rate of 1.6 V/µs, an input offset voltage of 15 mV, and a common-mode rejection ratio of 70 dB. It is housed in an SOIC-8 surface-mount package.

Feature Summary

• Ultra-low input bias current capability suitable for high-impedance signal sources
• Wide operating supply voltage range accommodating both single and dual power rails
• CMOS output stage capable of rail-to-rail swing near supply voltages

Applications

• Long time constant integrator circuits
• Picoammeter input stages
• Low droop rate sample-and-hold amplifiers

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer designation as Renesas Electronics, noting historical lineage from Intersil. Ensure the component meets RoHS compliance requirements if specified for the project. Cross-reference the datasheet revision to confirm pinout and electrical characteristics match the design intent.

Selection Notes

Select this component for applications requiring minimal input current loading on sensitive sensors. The dual-channel configuration allows for compact designs in signal conditioning chains. Consider the 1.4 MHz bandwidth for moderate-speed processing tasks. The SOIC-8 package facilitates automated surface-mount assembly processes.

Part Context

This part belongs to the ICL761X–ICL764X family of monolithic CMOS operational amplifiers. The family is characterized by combining ultra-low input current with low-power operation. While the ICL7621 is a dual-channel variant, other members like the ICL7611 offer single-channel configurations with similar electrical profiles but potentially different quiescent current options.

Replacement Considerations

The ICL7621DCSA is a comparable dual-channel CMOS op-amp from Maxim Integrated (now Analog Devices) with similar specifications. Verify pin compatibility and electrical tolerances before substitution.