ICL7621ACPA

Overview

The ICL7621ACPA is a dual, low-power CMOS operational amplifier manufactured by Analog Devices (formerly Maxim Integrated). It features two independent amplifiers within an eight-pin plastic DIP package. Key electrical specifications include a gain-bandwidth product of 44 kHz and a slew rate of 16 mV/us. The device operates with a supply voltage range from 2 V to 16 V single supply or ±1 V to ±8 V dual supply. Input characteristics include a bias current of 50 pA and an input offset voltage of 2 mV. The operating temperature range extends from 0°C to +70°C.

Feature Summary

• Monolithic low-power CMOS design for battery-powered applications
• Industry-standard pinouts for direct replacement compatibility
• Wide supply voltage range supporting single or dual power sources

Applications

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

Procurement Notes

Verify the manufacturer designation on the datasheet, as this component is produced by Analog Devices/Maxim Integrated rather than Intersil. Confirm the specific suffix 'ACPA' corresponds to the PDIP-8 through-hole package and commercial temperature grade. Check availability status, as some listings indicate this part may be discontinued or have limited stock in certain regions.

Selection Notes

Select this component when low quiescent current is critical, given its 15 uA operating power supply current. Choose the PDIP-8 package for through-hole prototyping or legacy board designs requiring industry-standard pinouts. Ensure the application does not require high-speed performance, as the 44 kHz bandwidth limits suitability for high-frequency signal processing tasks.

Part Context

The ICL7621 belongs to a family of dual operational amplifiers designed for general-purpose analog signal conditioning. It shares architectural similarities with other low-power CMOS op-amps but is distinguished by its specific combination of low bias current and moderate bandwidth. The device is widely recognized for its stability in integrator and sample-and-hold configurations due to low input leakage.

Replacement Considerations

• ICL7621ACPD
• ICL7621ACPE

FAQ

What is the maximum supply voltage for the ICL7621ACPA?

The maximum supply voltage is 16 V for single-supply operation or ±8 V for dual-supply operation.

Does the ICL7621ACPA support shutdown functionality?

No, the ICL7621ACPA does not feature a shutdown pin; it operates continuously when powered.