ICL7611DCSA+T

Overview

The ICL7611DCSA+T is a single-channel monolithic CMOS operational amplifier from the ICL761X family, manufactured by Analog Devices Inc./Maxim Integrated. It features ultra-low input bias current of 1pA typical and programmable quiescent currents selectable via an IQ pin at 10μA, 100μA, or 1000μA. The device operates on dual supplies from ±1V to ±8V or single supplies from 2V to 16V. Packaged in an 8-pin Slim Small Outline (SOIC), it supports commercial temperature ranges and offers rail-to-rail output swing capability.

Feature Summary

• Ultra-low input bias current ensures optimal performance with high source impedances
• Programmable quiescent current allows trade-off between power consumption and bandwidth
• Monolithic low-power CMOS design enables operation over wide supply voltage ranges
• Industry-standard pinouts facilitate direct replacement in existing designs

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration when sourcing. Confirm that the 'DC' designation aligns with the required commercial operating temperature range for the target application environment. Ensure compatibility with the manufacturer's RoHS compliance standards before finalizing procurement orders.

Selection Notes

Select this component when extremely low input bias current is critical for signal integrity. Consider the programmable IQ pin to optimize the balance between power dissipation and slew rate requirements. Verify that the 8-pin SOIC package dimensions fit the available PCB real estate constraints.

Part Context

This part belongs to the ICL761X–ICL764X family of precision operational amplifiers designed for applications requiring minimal input current loading. The series includes single, dual, triple, and quad configurations, sharing common electrical characteristics while varying in channel count and package options.

Replacement Considerations

The datasheet identifies this device as a pin-for-pin second source for legacy equivalents. Verify exact offset voltage grades and temperature specifications against original design requirements before substitution.