ICL7621BCPA

Overview

The ICL7621BCPA is a dual monolithic CMOS operational amplifier from the ICL761X–ICL764X family. It features an input offset voltage of 5mV typical and 10mV maximum at +25°C, with a temperature coefficient of 15µV/°C. The device operates on supply voltages ranging from ±1V to ±8V or single supplies from 2V to 16V. It has a unity-gain bandwidth of 0.044MHz at 10µA quiescent current, increasing to 0.48MHz at 100µA and 1.4MHz at 1mA. Input bias current is typically 1pA at +25°C, rising to 500pA across the commercial temperature range.

Feature Summary

• Dual-channel architecture with fixed internal quiescent current settings
• Ultra-low input bias current suitable for high-impedance sources
• Rail-to-rail output swing capability within millivolts of supply rails
• Industry-standard pinout configuration

Applications

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

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm package integrity and lead condition upon receipt. Ensure storage conditions comply with moisture sensitivity level requirements. Validate that the specific ordering suffix matches the required temperature range and electrical specifications before integration into production designs.

Selection Notes

Select this part when low power consumption and minimal input bias current are critical design constraints. The dual configuration allows for cost-effective implementation in multi-channel signal conditioning circuits. Consider the fixed quiescent current limitation compared to single-channel variants if programmable performance tuning is required for specific bandwidth applications.

Part Context

This component belongs to the ICL76XX series of general-purpose CMOS operational amplifiers manufactured by Analog Devices Inc./Maxim Integrated. The 'B' designation indicates a specific input offset voltage grade, while 'CPA' denotes the 8-pin plastic DIP package. This series is designed for applications requiring ultra-low power operation over a wide supply voltage range.

Replacement Considerations

Direct substitutes include other members of the ICL7621 family with compatible packages, such as ICL7621ACPA or ICL7621DCPA, provided their offset voltage grades meet the application requirements. Verify pin compatibility and electrical parameter alignment before substitution.