ICL7612DCSA+T

Overview

The ICL7612DCSA+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 50 pA and an input offset voltage of 15 mV at +25°C. The device operates within a supply voltage range of ±1 V to ±8 V (or 2 V to 16 V single supply) with a quiescent current of 15 µA. Key electrical parameters include a unity-gain bandwidth of 44 kHz, a slew rate of 16 mV/µs, and an input resistance of 10^12 Ω. It is housed in an 8-pin SOIC package and supports an operating temperature range of 0°C to +70°C.

Feature Summary

• Ultra-low input bias current of 50 pA ensures minimal loading on high-impedance signal sources.
• Monolithic low-power CMOS design enables operation over a wide supply voltage range.
• CMOS outputs provide rail-to-rail swing capability, approaching supply voltages closely.
• Extended common-mode voltage range allows flexible input signal handling.

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 when sourcing. Confirm that the 'D' designation corresponds to the 15 mV input offset voltage grade and the 'C' indicates the commercial 0°C to +70°C temperature range. Ensure compatibility with the 8-pin SOIC footprint during PCB layout review.

Selection Notes

Select this component for applications requiring ultra-low input bias currents and low power consumption. The fixed 15 µA quiescent current suits battery-powered instruments where energy efficiency is critical. Consider the extended common-mode range if input signals approach the negative supply rail.

Part Context

This part belongs to the ICL761X–ICL764X family of monolithic CMOS op amps. The '12' designation identifies it as a single-channel amplifier within this series. The family is characterized by pin-selectable or fixed quiescent currents and industry-standard pinouts for easy integration into existing designs.

Replacement Considerations

The datasheet lists the ICL7611 as a pin-for-pin second source within the same family. Verify that the replacement matches the required offset voltage grade and temperature range specifications.