ICL7611ACPA

Overview

The ICL7611ACPA+ is a single-channel monolithic CMOS operational amplifier from the ICL761X family, manufactured by Analog Devices/Maxim Integrated. It features an input offset voltage of 2mV and operates within a supply voltage range of ±1V to ±8V or 2V to 16V. The device offers programmable quiescent currents of 10µA, 100µA, or 1000µA per amplifier. Key electrical parameters include a unity-gain bandwidth of 44kHz, a slew rate of 16mV/µs at 10µA, and an input bias current of 50pA. It utilizes an 8-pin Plastic DIP package.

Feature Summary

• Monolithic CMOS design combining ultra-low input current with low-power operation
• Pin-selectable quiescent currents for adjustable performance trade-offs
• CMOS outputs capable of swinging to within millivolts of supply voltages
• Industry-standard pinouts compatible with second-source components

Applications

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

Procurement Notes

Verify the specific suffix 'ACPA+' against official manufacturer documentation to confirm the exact temperature range (0°C to +70°C) and packaging specifications. Confirm RoHS compliance status directly with the supplier as indicated in datasheet details. Ensure the ordering code matches the required channel count and compensation type before procurement.

Selection Notes

Select this component when applications require extremely low input bias currents and high input impedance. The programmable quiescent current allows designers to balance power consumption against bandwidth and slew rate requirements. Verify that the 2mV maximum input offset voltage meets the precision needs of the circuit design.

Part Context

This part belongs to the ICL761X–ICL764X family of monolithic CMOS operational amplifiers. The family includes single, dual, triple, and quad configurations with varying levels of offset voltage and compensation options. The ICL7611 specifically denotes a single-channel, internally compensated unit within this series.

Replacement Considerations

The datasheet indicates the availability of pin-for-pin second sources. Verify compatibility with other manufacturers offering equivalent CMOS op-amps in the ICL761X family before substitution.