ICL7611DCBA-T

Overview

The ICL7611DCBA-T is a single operational amplifier manufactured by Intersil, utilizing CMOS technology. It features an auto-zero architecture that minimizes offset voltage and drift. The device operates within a supply voltage range of ±4.5V to ±9V, with a typical bandwidth of 44kHz. Key electrical characteristics include a maximum input bias current of 0.05nA and a slew rate of 0.016V/µs. It is housed in an 8-pin DIP package suitable for commercial temperature ranges.

Feature Summary

• Auto-zero stabilization reduces offset voltage and drift over time and temperature
• Ultra-low input bias current suitable for high-impedance sensor interfaces
• CMOS construction enables low power consumption and wide supply voltage operation

Applications

• Precision DC amplification circuits
• High-impedance transducer signal conditioning
• Low-frequency filter stages requiring minimal drift

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when ordering. Confirm the manufacturer origin, as Intersil assets are now part of Renesas. Ensure the component meets RoHS compliance requirements if specified for your application. Cross-reference the datasheet revision to confirm pinout and electrical limits match your design constraints.

Selection Notes

Select this component for applications requiring stable DC performance without external trimming. Compare against other auto-zero amplifiers if higher bandwidth or lower noise is required. Consider the DIP package availability versus surface-mount alternatives like SOIC or MSOP based on board space constraints. Verify supply voltage compatibility with the ±4.5V to ±9V operating range.

Part Context

The ICL7611 belongs to the ICL761x family of auto-zero operational amplifiers. This series is designed for precision analog applications where low offset and drift are critical. The device represents a transition from older bipolar technologies to CMOS processes while maintaining high accuracy. It is widely used in instrumentation and measurement systems.

Replacement Considerations

Check for direct substitutes such as the ICL7611BCPA or ICL7611DCSA+ from Maxim Integrated or Analog Devices. Verify pin compatibility and electrical specifications before substitution. Note that some replacements may have different package options or updated manufacturing origins.