CA3080A/B

Overview

The CA3080AE is a bipolar transconductance operational amplifier manufactured by Intersil, Harris, and Rochester Electronics. It features a maximum input offset voltage of 5000 uV and a bandwidth of 2 MHz. The device operates in a PDIP-8 plastic package with a nominal common-mode rejection ratio of 110 dB and a maximum average bias current of 15 µA. It includes internal frequency compensation and is designed for applications requiring high-speed signal processing within a standard dual-inline configuration.

Feature Summary

• Transconductance architecture optimized for high-speed analog applications
• Integrated internal frequency compensation for stability
• High common-mode rejection ratio ensuring accurate differential signaling

Applications

• High-speed voltage-to-current conversion circuits
• Variable gain amplifier stages in communication systems
• Analog multiplier and mixer implementations
• Precision instrumentation front-ends requiring wide bandwidth

Procurement Notes

Verify the specific manufacturer origin, as the component is listed under Intersil, Harris, and Rochester Electronics. Confirm the exact offset voltage specification, as some variants indicate 0 uV while others specify 5000 uV. Ensure the PDIP-8 package type matches the design requirements before procurement.

Selection Notes

Select this component when a transconductance output topology is required rather than a standard voltage output. Consider the 2 MHz bandwidth limit for high-frequency designs. Verify the bias current specifications against the source impedance requirements to ensure minimal offset errors in the application circuit.

Part Context

The CA3080 series originates from the legacy Harris and Intersil product lines, now often distributed by Rochester Electronics. It represents a specialized class of operational amplifiers distinct from standard voltage-feedback types due to its transconductance nature. This lineage ensures compatibility with older high-speed analog designs originally specified for Harris or Intersil platforms.

Replacement Considerations

No official substitute part numbers are confirmed in the provided documentation. Evaluate alternative transconductance amplifiers based on pin compatibility and electrical parameter equivalence if sourcing becomes difficult.

FAQ

What is the primary difference between the CA3080AE and standard operational amplifiers?

The CA3080AE utilizes a transconductance architecture, providing an output current proportional to the input voltage, whereas standard op-amps typically provide a voltage output.

Does the CA3080AE require external frequency compensation?

No, the CA3080AE includes internal frequency compensation, simplifying the design process for stable operation.