CA3080M

Overview

The CA3080M is a high-performance operational amplifier manufactured by Rochester Electronics, LLC. It features a transconductance architecture housed in an 8-pin plastic DIP package. The device exhibits a maximum input offset voltage of 5000 µV and a bandwidth of 2 MHz. Key electrical characteristics include a typical common-mode rejection ratio of 110 dB and a maximum average bias current of 15 µA at elevated temperatures. Designed for bipolar supply operation, it integrates internal frequency compensation to ensure stability in various analog signal processing applications.

Feature Summary

• Transconductance operational amplifier architecture
• Integrated frequency compensation for stability
• High common-mode rejection capability
• Bipolar supply operation design

Applications

• Precision analog signal conditioning circuits
• Instrumentation amplifier front-ends
• Active filter implementations
• Voltage follower buffer stages
• Sensor interface amplification

Procurement Notes

Verify the specific manufacturer origin, as Rochester Electronics often distributes surplus or discontinued parts originally fabricated by Harris or Intersil. Confirm the package marking and date code to ensure authenticity. Check for any environmental compliance declarations such as RoHS status, as older variants may not meet current standards. Ensure the operating temperature range aligns with your system requirements before finalizing procurement.

Selection Notes

Select this component when a high-speed, high-gain bandwidth product is required with moderate precision. The 2 MHz bandwidth supports applications needing faster response times than standard general-purpose op-amps. Consider the 5000 µV offset voltage limit; if lower drift is critical, evaluate low-offset variants within the same family. The transconductance nature influences feedback loop design compared to voltage-feedback amplifiers.

Part Context

The CA3080 series originates from the legacy Harris Semiconductor portfolio, later acquired by Intersil and subsequently Renesas. Rochester Electronics provides lifecycle support for these components after original production ceases. This part represents a classic high-frequency operational amplifier design, widely used in industrial and commercial electronics prior to the dominance of modern CMOS op-amps.

Replacement Considerations

Official substitute part numbers are not explicitly confirmed in the provided source material. Designers should consult the official datasheet for direct pin-compatible alternatives or perform functional equivalence analysis with other 2 MHz transconductance amplifiers. Verify that any replacement matches the 8-pin DIP footprint and electrical specifications exactly.