ICL7621DCPA+

Overview

The ICL7621DCPA+ is a dual-channel operational amplifier from the ICL761X–ICL764X family, manufactured by Analog Devices Inc./Maxim Integrated. It features a monolithic CMOS design with industry-standard pinouts and operates on supply voltages ranging from ±1V to ±8V (or single supplies of 2V to 16V). The device provides ultra-low input bias current of 1pA typical and low noise current of 0.01pA√Hz. It includes offset null capability and fixed quiescent current settings. The component is housed in an 8-pin Plastic DIP package and supports commercial temperature operation.

Feature Summary

• Ultra-low input bias current for high-impedance source applications
• Offset null capability for precision signal conditioning
• Rail-to-rail output swing approaching supply voltages
• Industry-standard pinout configuration

Applications

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

Procurement Notes

Verify that the ordering suffix 'PA' corresponds to the 8-pin Plastic DIP package and confirm the 'C' series designation matches the required 0°C to +70°C operating temperature range. Ensure compatibility with the manufacturer's RoHS compliance standards before finalizing procurement specifications.

Selection Notes

Select this component when low power consumption and minimal input bias current are critical requirements. The dual-channel architecture allows for cost-effective implementation of differential or multi-stage circuits. Verify that the fixed quiescent current meets the bandwidth and slew rate demands of the specific application without requiring external programming.

Part Context

This part belongs to the ICL761X–ICL764X family of monolithic CMOS operational amplifiers. The family combines ultra-low input current with low-power operation over a wide supply voltage range. While single and triple amplifiers offer programmable quiescent currents, dual and quad variants like this model feature fixed internal current settings optimized for general-purpose use.

Replacement Considerations

Direct substitutes within the same family include other ICL7621 variants such as ICL7621ACPA or ICL7621BCPA, provided they match the required offset voltage specifications and package type.