ICL7622ACPD+

Overview

The ICL7622ACPD+ is a dual operational amplifier from the ICL761X–ICL764X family, manufactured by Analog Devices Inc./Maxim Integrated. It features monolithic CMOS construction with ultra-low input bias current of 1pA typical and low-power operation across a wide supply voltage range of ±1V to ±8V. The device offers pin-selectable quiescent currents for single amplifiers, though this dual variant has fixed settings. It includes offset null capability and industry-standard pinouts.

Feature Summary

• Ultra-low input bias current of 1pA typical ensures optimum performance with very high source impedances
• Monolithic low-power CMOS design supports operation from ±1V to ±8V power supplies
• Includes input offset nulling capability via external potentiometer connection
• Features industry-standard pinouts for direct replacement in existing designs

Applications

• Long-time constant integrators
• Picoammeters
• Low-leakage amplifiers
• Low-frequency active filters

Procurement Notes

Verify the specific suffix 'ACPD+' against the manufacturer's official ordering information to confirm the package type, temperature range, and RoHS compliance status. Ensure the component matches the required dual amplifier configuration and that the plastic DIP package aligns with your board layout constraints before finalizing procurement.

Selection Notes

Select this component when applications require extremely low input bias currents and high input impedance, such as in pH meters or photodiode amplifiers. Consider the fixed quiescent current characteristics of the dual version compared to the programmable single amplifiers. Verify that the ±1V to ±8V supply range meets system requirements and that the 0°C to +70°C commercial temperature range is sufficient.

Part Context

This part belongs to the ICL761X–ICL764X family of monolithic CMOS operational amplifiers known for combining ultra-low input current with low-power operation. The family includes single, dual, triple, and quad configurations, offering flexibility for various analog signal processing needs while maintaining consistent electrical characteristics across the series.

Replacement Considerations

Check for pin-compatible alternatives within the same family, such as other ICL7622 variants with different temperature ranges or packages. Verify if single-channel equivalents like the ICL7612 can be used if only one amplifier is needed, ensuring quiescent current settings are appropriate.