ICL7612DCPA

Overview

The ICL7612DCPA is a single-channel, low-power CMOS operational amplifier manufactured by Renesas Electronics. It features an annealed input stage to minimize offset voltage drift over time and temperature. The device operates from a wide supply voltage range of 1V to 16V (single) or ±0.5V to ±8V (dual). Key electrical characteristics include a gain-bandwidth product of 1.4 MHz, a slew rate of 1.6 V/µs, and an input bias current of 50 pA. It is housed in an 8-pin PDIP package.

Feature Summary

• Utilizes an annealed input stage for stable performance with minimal long-term drift.
• Supports operation across a wide single-supply range from 1V to 16V.
• Features ultra-low input bias current suitable for high-impedance sources.

Applications

• Battery-powered instruments requiring low quiescent current
• Low-leakage amplifiers and picoammeters
• Long-time constant integrators

Procurement Notes

Verify the suffix 'CPA' indicates the PDIP-8 package variant distinct from the SOIC-8 'DCBAZ'. Confirm RoHS compliance status via the specific manufacturer datasheet revision. Ensure the operating temperature range aligns with commercial specifications (0°C to +70°C). Cross-reference the manufacturer part number directly with Renesas documentation to avoid confusion with generic equivalents.

Selection Notes

Select this component when low input bias current and stability are prioritized over high-speed performance. The 1.4 MHz bandwidth limits suitability for high-frequency signal processing. Verify that the 40 mA output drive capability meets load requirements. Consider the PDIP package constraints if PCB space is limited compared to surface-mount alternatives.

Part Context

This part belongs to the ICL761X–ICL764X family of monolithic CMOS op amps designed for low-power applications. The family shares pin-compatible designs with programmable quiescent currents in other variants, though the ICL7612 offers fixed low-power characteristics optimized for general-purpose use with high source impedances.

Replacement Considerations

The ICL7612AMPD is a pin-compatible alternative in a PDIP-8 package. Verify that the replacement maintains the same electrical parameters, specifically the 1.4 MHz gain-bandwidth product and 50 pA input bias current, before implementation.