ICL7621ACTV

Overview

The ICL7621ACTV is a dual operational amplifier manufactured by Maxim Integrated, utilizing monolithic low-power CMOS technology. It features a voltage-feedback architecture with industry-standard pinouts and operates on wide supply voltages ranging from ±1V to ±8V or single supplies up to 16V. Key electrical specifications include a maximum input offset voltage of 3000 µV, a bandwidth of 0.48 MHz, and extremely low input bias currents as low as 50 pA. The device is housed in an 8-pin TO-99 metal can package.

Feature Summary

• Monolithic low-power CMOS design for extended battery life
• Industry-standard pinouts ensuring compatibility with existing layouts
• Wide supply voltage range supporting diverse power environments
• Low input bias current suitable for high-impedance signal sources

Applications

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

Procurement Notes

Verify the manufacturer origin carefully, as Analog Devices acquired Maxim Integrated. Confirm RoHS compliance status, as some listings indicate non-compliance due to lead content. Ensure the specific suffix matches the required package type, typically TO-99 for this part number. Check availability as older CMOS components may have limited stock or be subject to obsolescence notices.

Selection Notes

Select this component when ultra-low input bias current and low power consumption are critical requirements. It is suitable for applications requiring wide supply voltage flexibility without sacrificing signal integrity. Consider the TO-99 package constraints if surface-mount assembly is necessary, as SOIC alternatives exist within the family but may differ in specific electrical characteristics.

Part Context

This device belongs to the ICL761X–ICL764X series of CMOS operational amplifiers designed for precision analog applications. The series is characterized by its ability to operate with very low quiescent current while maintaining stable performance across a wide temperature range. It serves as a foundational component for designing sensitive measurement circuits where leakage currents must be minimized.

Replacement Considerations

Public confirmed substitute part numbers: ICL7621BCTV, ICL7621DCSA.