ICL7611ACPA+

Overview

The ICL7611ACPA+ is a single-channel, low-power operational amplifier manufactured by Analog Devices Inc. under the Maxim Integrated brand. It features a gain-bandwidth product of 44 kHz and a slew rate of 16 mV/us. The device operates with an input bias current of 50 pA and an input offset voltage of 2 mV. Supply voltage ranges from 1 V to 8 V or 2 V to 16 V, with a typical operating supply current of 15 uA. It offers a common-mode rejection ratio of 66 dB and an input voltage noise density of 100 nV/sqrt Hz. The component is housed in an 8-pin PDIP package for through-hole mounting.

Feature Summary

• CMOS architecture designed for low power consumption applications
• Auto-zeroing technology minimizes offset voltage drift over time and temperature
• Rail-to-rail output swing capability maximizes dynamic range
• High input impedance suitable for sensitive signal conditioning

Applications

• Battery-powered instrumentation circuits
• Precision sensor signal amplification
• Low-frequency data acquisition systems
• Portable medical devices requiring minimal power draw

Procurement Notes

Verify RoHS compliance status directly with the manufacturer or authorized distributors, as legacy variants may differ. Confirm the specific suffix indicates lead-free packaging if required by assembly standards. Check current availability status, as this component may be subject to limited stock or discontinuation notices. Ensure the PDIP-8 package matches your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when ultra-low quiescent current is critical alongside moderate precision requirements. The auto-zero feature addresses drift issues common in standard CMOS op-amps without sacrificing power efficiency. Consider the 44 kHz bandwidth limit for high-speed applications where this device would be unsuitable. Verify that the 15 uA supply current aligns with strict battery life constraints in portable designs.

Part Context

This part belongs to the ICL7611 series of auto-zero operational amplifiers known for combining low power with improved DC accuracy. The 'A' grade typically denotes tighter offset voltage specifications compared to lower grades. The '+' suffix generally indicates RoHS-compliant manufacturing. It serves as a bridge between general-purpose amplifiers and higher-performance chopper-stabilized types.

Replacement Considerations

• ICL7611BCPA+

FAQ

Does the ICL7611ACPA+ include a shutdown pin?

No, the datasheet specifications indicate no shutdown functionality is available for this specific variant.

What is the maximum dual supply voltage rating?

The maximum dual supply voltage is rated at 8 V, while the total supply span can reach up to 16 V depending on configuration.