CA3440M

Overview

The CA3440M is a Nanopower BiMOS operational amplifier manufactured by Harris Corporation. It integrates MOS and bipolar transistors on a single monolithic chip, combining the high input impedance of MOSFETs with the low output impedance of bipolar devices. The device features gate-protected PMOS input transistors, resulting in very low input bias currents. It operates with a bandwidth of 63kHz and is designed for applications requiring precision and low power consumption.

Feature Summary

• Combines MOS and bipolar transistor advantages on a single monolithic chip
• Features gate-protected PMOS input transistors for high input impedance
• Provides very low input bias currents suitable for nanopower applications

Applications

• Precision instrumentation circuits
• Low power analog signal processing
• High impedance sensor interfaces

Procurement Notes

Verify the manufacturer origin as Harris Corporation or its successor entities such as L3Harris Technologies. Confirm the package type matches the required 8-SOIC specification. Ensure the component meets RoHS compliance standards if required for the specific assembly process. Cross-reference datasheet revisions to confirm electrical characteristics remain consistent with design requirements.

Selection Notes

Select this component when extremely low input bias current and high input impedance are critical. The BiMOS technology offers a balance between MOS input isolation and bipolar output drive capability. Consider the 63kHz bandwidth limitation for frequency response requirements. Evaluate the nanopower consumption benefits against speed needs in the target application circuit.

Part Context

The CA3440 series belongs to the BiMOS operational amplifier family developed by Harris Corporation. This technology merges MOS input stages with bipolar output stages to optimize performance characteristics. Harris Corporation specialized in communications and information systems before merging with L3 Technologies to form L3Harris Technologies in 2019.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.