ICL7631CCSE

Overview

The ICL7631CCSE is a triple operational amplifier from the ICL761X–ICL764X family, manufactured by Analog Devices Inc./Maxim Integrated. It features a monolithic CMOS design with pin-selectable quiescent currents of 10μA, 100μA, or 1000μA per amplifier. The device operates from ±1V to ±8V dual supplies or single supplies from 2V to 16V. Key electrical parameters include an input bias current of 1pA typical (4nA max at +125°C), an input offset voltage of 10mV maximum, and a unity-gain bandwidth of 0.044MHz at 10μA IQ. The output swings within millivolts of the supply rails.

Feature Summary

• Ultra-low input bias current of 1pA typical for high-impedance applications
• Pin-selectable quiescent current settings of 10μA, 100μA, or 1000μA
• Rail-to-rail CMOS output swing capability
• Internally compensated for stable unity-gain operation

Applications

• Long-time constant integrators
• Picoammeters
• Low-leakage amplifiers
• Low-frequency active filters
• Sample/hold amplifiers requiring low droop rates

Procurement Notes

Verify the specific ordering suffix 'CCSE' against the manufacturer's official datasheet to confirm the package type (Slim SO) and temperature range (Commercial). Ensure compatibility with existing PCB footprints and thermal management requirements for the 16-pin Slim SO configuration.

Selection Notes

Select this component when ultra-low input bias current is critical for signal integrity in high-impedance circuits. The triple configuration allows for multi-channel processing within a single package. Consider the programmable IQ feature to optimize the trade-off between power consumption and bandwidth/slew rate performance.

Part Context

This part belongs to the ICL761X–ICL764X series of monolithic CMOS operational amplifiers. The '7631' designation indicates a triple amplifier configuration. The 'C' suffix denotes a commercial temperature range, while 'S' specifies the Slim Small Outline package. This series is designed for low-power, precision analog applications requiring minimal input current loading.

Replacement Considerations

Direct replacements must match the triple amplifier topology, CMOS technology, and 16-pin Slim SO package. Verify that any substitute maintains the 1pA input bias current specification and compatible supply voltage ranges.