ICL7611BCPA

Overview

The ICL7611BCPA is a single-channel, low-bias operational amplifier manufactured by Intersil. It features a gain-bandwidth product of 1.4 MHz and a slew rate of 1.6 V/us. The device operates with an input bias voltage of 15 mV and an input bias current of 50 pA. It supports power supply voltages ranging from 1 V to 8 V for dual supplies or 2 V to 16 V for single supplies. The typical operating supply current is 1 mA, with each channel capable of delivering 40 mA output current. It provides a common-mode rejection ratio of 70 dB and an input voltage noise density of 100 nV/sqrt Hz. The component is housed in an SOIC-8 package.

Feature Summary

• Low input bias current specification suitable for high-impedance signal processing
• General-purpose amplifier design optimized for low-power applications
• Operational stability across standard single and dual power supply configurations

Applications

• Precision sensor signal conditioning circuits
• High-impedance buffer stages in measurement systems
• Low-power analog front-end modules

Procurement Notes

Verify the manufacturer designation as Intersil or its successor entity Renesas Electronics on the component marking. Confirm the package type matches the SOIC-8 specification and check RoHS compliance status through official datasheets. Ensure the suffix indicates the correct temperature grade and packaging format before procurement.

Selection Notes

Select this component when low input bias current and moderate bandwidth are required for general-purpose amplification. Compare performance against other low-bias op-amps if higher precision or lower noise is needed. Verify that the SOIC-8 package fits the target PCB layout constraints and thermal requirements.

Part Context

The ICL7611 series belongs to the family of low-bias operational amplifiers designed for applications requiring minimal input current draw. This specific part represents the commercial grade variant within the broader ICL7611 lineup, offering balanced performance for standard industrial and consumer electronics environments.

Replacement Considerations

Check for direct pin-compatible replacements such as the ICL7611CPA or ICL7611DCPA. Verify electrical parameter equivalence for gain-bandwidth, slew rate, and supply voltage ranges before substitution.