ICL7612BCSA+

Overview

The ICL7612BCSA+ is a dual-channel monolithic CMOS operational amplifier from the ICL761X–ICL764X family. It features ultra-low input bias current of 1pA typical and low-power operation across a wide supply voltage range of ±1V to ±8V or single supplies from 2V to 16V. The device offers pin-selectable quiescent currents for single amplifiers, though this dual variant has fixed settings. It provides rail-to-rail output swing capability and extended common-mode voltage range.

Feature Summary

• Ultra-low input bias current of 1pA typical ensures minimal loading on high-impedance sources
• Monolithic low-power CMOS design supports operation over a wide supply voltage range
• CMOS outputs swing to within millivolts of the supply rails for maximum dynamic range
• Industry-standard pinouts facilitate direct replacement in existing circuit designs

Applications

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

Procurement Notes

Verify the specific suffix 'BCSA+' against the manufacturer's official ordering information to confirm the exact temperature range and package specifications. Confirm availability status as distribution channels may list limited stock or obsolete status for legacy CMOS components. Ensure the selected variant matches the required quiescent current configuration for the intended application.

Selection Notes

Select this component when extremely low input bias current is critical for signal integrity. The dual-channel architecture allows for cost-effective implementation of differential stages. Consider the fixed quiescent current nature of the dual version compared to the programmable single-channel variants. Evaluate the extended common-mode voltage range if operating near the negative supply rail.

Part Context

This part belongs to the ICL761X–ICL764X family of precision operational amplifiers manufactured by Analog Devices / Maxim Integrated. The family combines ultra-low input current with low-power operation. The 'B' designation indicates a specific input offset voltage grade, while 'CSA' denotes the 8-pin Small Outline package. This series is designed for applications requiring high input impedance and low power consumption.

Replacement Considerations

The datasheet identifies the ICL761X–ICL764X family as having pin-for-pin second source options. Verify compatibility with other manufacturers offering equivalent CMOS op-amps with similar bias current and supply voltage specifications before substitution.