ICL7642CCPD

Overview

The ICL7642CCPD is a quad CMOS operational amplifier from the ICL761X–ICL764X family, manufactured by Analog Devices Inc./Maxim Integrated. It features a voltage-feedback architecture in a 14-pin plastic DIP package. Key electrical parameters include a maximum average input bias current of 0.004 µA and a typical bias current of 1pA. The device offers a nominal common-mode rejection ratio of 80 dB and a maximum input offset voltage of 12000 µV. It operates from supply voltages ranging from ±1V to ±8V or single supplies from 2V to 16V.

Feature Summary

• Combines ultra-low input current with low-power operation over a wide supply voltage range.
• Features pin-selectable quiescent currents of 10µA, 100µA, or 1000µA per amplifier.
• CMOS outputs swing to within millivolts of the supply voltages.

Applications

• Long time constant integrators
• Picoammeters
• Low droop rate sample/hold amplifiers
• pH meters
• Photodiode amplifiers

Procurement Notes

Verify component authenticity through authorized channels as this part may be discontinued. Confirm package integrity and lead condition upon receipt. Ensure storage conditions meet manufacturer specifications for CMOS devices. Cross-reference datasheet revisions to confirm parameter consistency. Validate compatibility with existing PCB footprints before integration.

Selection Notes

Select this component when designing circuits requiring extremely low input bias currents and high source impedance handling. Consider the pin-selectable quiescent current options for power optimization. Verify that the 14-pin DIP package fits the target mechanical constraints. Evaluate the wide supply voltage range against system power availability.

Part Context

This part belongs to the ICL761X–ICL764X family of monolithic CMOS operational amplifiers. The family includes single, dual, triple, and quad variants sharing similar electrical characteristics and pinouts. These amplifiers are designed for applications demanding low power consumption and high precision with minimal input current loading.

Replacement Considerations

Check for pin-compatible alternatives within the same family, such as other ICL764x variants. Verify if upgraded versions with RoHS compliance are available. Ensure substitute parts maintain the required 1pA bias current specification for critical applications.