ICL7642BCPD+

Overview

The ICL7642BCPD+ is a quad monolithic CMOS operational amplifier from the ICL761X–ICL764X family. It features pin-selectable quiescent currents of 10µA, 100µA, or 1000µA per amplifier and operates from ±1V to ±8V supplies. The device offers ultra-low input bias current (1pA typical) and high input impedance (10^12 Ω). It includes offset null capability and industry-standard pinouts.

Feature Summary

• Ultra-low input bias current for high source impedance applications
• Pin-selectable quiescent current settings for power optimization
• Internal offset nulling capability via external potentiometer
• CMOS outputs swing within millivolts of supply rails

Applications

• Long-time constant integrators
• Low-leakage amplifiers
• Picoammeters
• Low droop rate sample/hold amplifiers

Procurement Notes

Verify the component matches the specific Quad configuration and Plastic DIP-14 package. Confirm the 'C' suffix indicates the commercial temperature range and 'B' indicates the specified offset voltage grade. Ensure the '+' suffix denotes lead-free compliance if required by the assembly process.

Selection Notes

Select this part when multiple low-power amplifiers are needed in a single package. The quad architecture reduces board space compared to singles. Verify that the fixed internal quiescent current of the quad variant meets the bandwidth requirements, as it differs from the programmable single/dual versions.

Part Context

This component belongs to the ICL761X–ICL764X series of general-purpose CMOS op amps. The '4' designation identifies it as a quad amplifier containing four independent channels. It shares the same core architecture and electrical characteristics as the single and dual variants within the family.

Replacement Considerations

Check for other ICL7642 variants with different temperature ranges or packages. Verify compatibility with existing PCB footprints if substituting with CERDIP or SO packages.