ICL7612DCSA-T

Overview

The ICL7612DCSA-T is a single operational amplifier from the ICL761X–ICL764X family, manufactured by Analog Devices Inc./Maxim Integrated. It features a monolithic CMOS design with an extended common-mode voltage range and pin-selectable quiescent currents of 10μA, 100μA, or 1000μA. The device operates on supply voltages ranging from ±1V to ±8V (or 2V to 16V single supply). Key electrical parameters include a unity-gain bandwidth of 0.044 MHz at 10μA IQ, a typical input bias current of 1pA, and an input offset voltage of 15mV. It is housed in an 8-pin Slim SO package.

Feature Summary

• Ultra-low input bias current of 1pA typical for high-impedance applications
• Pin-selectable quiescent current settings of 10μA, 100μA, or 1000μA
• Extended common-mode voltage range specific to the ICL7612 variant
• CMOS outputs swing to within millivolts of the supply rails

Applications

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

Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging as specified in the manufacturer's documentation. Confirm the 'DC' designation indicates the 15mV input offset voltage grade and the 'SA' code matches the 8-pin Slim Small Outline package. Ensure the component meets the required commercial temperature range of 0°C to +70°C before procurement.

Selection Notes

Select this part when ultra-low input bias current is critical for maintaining signal integrity in high-impedance circuits. The ICL7612 variant is specifically chosen over other family members due to its extended common-mode voltage range. Consider the programmable quiescent current feature to optimize the trade-off between power consumption and bandwidth requirements for the target application.

Part Context

This component belongs to the ICL761X–ICL764X series of monolithic CMOS operational amplifiers. The series combines low-power operation with extremely low input currents, making it suitable for precision analog signal processing. The ICL7612 is a single-channel amplifier distinguished by its unique common-mode input specifications compared to standard variants in the lineup.

Replacement Considerations

The datasheet lists the ICL7612DCPA as a pin-for-pin second source equivalent. Verify compatibility regarding package dimensions and thermal characteristics when substituting between DIP and SO packages.