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 an input bias current of 1pA typical and 4nA maximum at +125°C, with a supply voltage range of ±1V to ±8V or 2V to 16V single supply. The device operates within a temperature range of -40°C to +85°C and utilizes an 8-pin SOIC package.

Feature Summary

• Ultra-low input bias current for high-impedance source applications
• Pin-selectable quiescent currents for power-speed optimization
• Rail-to-rail output swing capability
• Internal offset nulling functionality

Applications

• Long time constant integrators
• Picoammeters
• Low droop rate sample/hold amplifiers
• pH meters and photodiode amplifiers

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm that the 'D' grade meets the required input offset voltage specifications for your circuit design. Ensure the manufacturer designation matches the intended supply chain requirements before finalizing procurement orders.

Selection Notes

Select this component when ultra-low input bias current is critical for maintaining signal integrity in high-impedance circuits. Consider the programmable quiescent current feature if dynamic power consumption needs to be balanced against bandwidth 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 low-power CMOS operational amplifiers. The family includes single, dual, triple, and quad variants with varying channel counts and compensation options. The ICL7611 specifically denotes a single-channel amplifier with internal frequency compensation suitable for unity-gain stability.

Replacement Considerations

Check for pin-compatible alternatives within the same ICL761X series. Verify that substitute parts maintain the required input bias current and supply voltage specifications. Ensure the replacement package type matches the existing board layout if physical interchangeability is necessary.