ICL7631BCSE

Overview

The ICL7631BCSE is a triple operational amplifier from the ICL761X–ICL764X family, manufactured by Analog Devices Inc./Maxim Integrated. It features a monolithic CMOS design with pin-selectable quiescent currents of 10μA, 100μA, or 1000μA per amplifier. The device operates on supply voltages ranging from ±1V to ±8V (or single supplies from 2V to 16V). Key electrical parameters include a typical input bias current of 1pA, an input resistance of 10^12Ω, and a unity-gain bandwidth of 0.044MHz at the lowest current setting. The BC series specifies a maximum input offset voltage of 5mV at +25°C.

Feature Summary

• Pin-selectable quiescent current allows optimization for power consumption versus speed
• Ultra-low input bias current ensures minimal loading on high-impedance sources
• CMOS outputs swing within millivolts of the supply rails
• Internal frequency compensation supports stable unity-gain operation

Applications

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

Procurement Notes

Verify that the ordering suffix 'SE' corresponds to the 16-pin Slim Small Outline package as defined in the official datasheet. Confirm the 'B' designation indicates the specific input offset voltage tolerance class required for the application. Ensure the component source is authorized to guarantee authenticity and traceability.

Selection Notes

Select this part when multiple low-power amplifiers are needed in a compact surface-mount footprint. The triple configuration reduces board space compared to using three separate single amplifiers. Consider the trade-off between the selectable quiescent current settings and the resulting bandwidth requirements for the signal path.

Part Context

This component belongs to the ICL76XX series of monolithic CMOS operational amplifiers. The '3' in the model number identifies it as a triple amplifier containing three independent op-amps. The 'C' denotes the commercial temperature range, while 'B' specifies the offset voltage grade. The 'SE' suffix defines the physical package type.

Replacement Considerations

Check for other members of the ICL763X family, such as ICL7631ACSE or ICL7631DCSE, which offer different offset voltage grades or temperature ranges. Verify pin compatibility if substituting with other triple op-amp families.