ICL7642ECPD+

Overview

The ICL7642ECPD+ is a quad monolithic CMOS operational amplifier from the ICL761X–ICL764X family. It features four independent amplifiers in a 14-pin Plastic DIP package with an operating temperature range of 0°C to +70°C. The device operates on supply voltages ranging from ±1V to ±8V, or single supplies from 2V to 16V. Key electrical characteristics include a typical input bias current of 1pA, a unity-gain bandwidth of 44kHz, and a slew rate of 16mV/µs at the lowest quiescent setting.

Feature Summary

• Ultra-low input bias current of 1pA typical for high-impedance applications
• Monolithic low-power CMOS design with wide supply voltage operation
• Rail-to-rail output swing capability approaching supply voltages
• Industry-standard pinouts for direct replacement compatibility

Applications

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

Procurement Notes

Verify the specific suffix ECPD+ against official manufacturer documentation to confirm the exact temperature grade (C series) and lead-free status. Ensure the ordering code matches the required quad configuration and plastic DIP packaging format before finalizing procurement specifications.

Selection Notes

Select this component when multiple ultra-low bias channels are required within a single integrated circuit. The quad architecture offers space efficiency compared to discrete single-channel solutions. Verify that the fixed quiescent current settings inherent to the quad topology meet the system's power consumption and bandwidth requirements.

Part Context

This part belongs to the ICL761X–ICL764X family of general-purpose operational amplifiers manufactured by Analog Devices / Maxim Integrated. The '4' designation indicates a quad configuration containing four independent amplifiers, distinguishing it from single, dual, or triple variants within the same product line.

Replacement Considerations

Check for pin-for-pin second sources listed in the official datasheet. Confirm that any substitute maintains the same quad channel count, 14-pin PDIP package, and compatible electrical parameters such as input bias current and supply voltage range.

FAQ

How does the quiescent current behave in the ICL7642 compared to single-channel variants?

Unlike single-channel versions which allow pin-selectable quiescent currents, the ICL7642 quad amplifier has fixed quiescent current settings determined by its internal architecture.

What is the maximum supply voltage rating for this device?

The total supply voltage (V+ to V-) must not exceed +18V according to the absolute maximum ratings.