ICL7632BCSE

Overview

The ICL7632BCSE is a triple operational amplifier from the ICL761X–ICL764X family, manufactured by Maxim Integrated. It features a monolithic CMOS design with ultra-low input bias current of 1pA typical and programmable 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. It has an input offset voltage maximum of 10mV at +25°C and a unity-gain bandwidth of 0.044MHz at the lowest quiescent current setting.

Feature Summary

• Ultra-low input bias current of 1pA typical for high-impedance applications
• Programmable quiescent current selection via external pin connection
• Rail-to-rail output swing capability within millivolts of supply rails
• Industry-standard pinouts for direct replacement in existing designs

Applications

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

Procurement Notes

Verify that the ordering suffix SE corresponds to the 16-pin Slim Small Outline package as specified in the official datasheet. Confirm the temperature range code B indicates commercial operation from 0°C to +70°C. Ensure the BC designation matches the required input offset voltage specifications for your circuit requirements before finalizing procurement.

Selection Notes

Select this component when low power consumption and minimal input bias current are critical. The triple configuration allows for multiple signal paths in a single package. Consider the programmable IQ feature to optimize the trade-off between bandwidth and power dissipation based on specific application needs.

Part Context

This part belongs to the ICL761X–ICL764X series of monolithic CMOS operational amplifiers. The '3' in the model number denotes a triple amplifier configuration. The 'C' indicates the input offset voltage grade, while 'B' specifies the commercial temperature range. This family is designed for precision analog applications requiring low power and high input impedance.

Replacement Considerations

The datasheet lists the ICL7632BCSE as a pin-for-pin second source compatible with other manufacturers' offerings. Verify pin compatibility and electrical specifications against the original component to ensure seamless integration without circuit modification.

FAQ

How is the quiescent current programmed?

The quiescent current is selected by connecting the IQ pin to V+ for 10μA, leaving it floating (between V- + 0.8V and V+ - 0.8V) for 100μA, or connecting it to V- for 1000μA.

Is the ICL7632 internally compensated?

No, the ICL7632 is not internally compensated. It should only be used at gains greater than or equal to 20 at IQ of 1mA, gains greater than 10 at IQ of 100μA, and gains greater than 5 at IQ of 10μA.