CA3240E

Overview

The CA3240E is a dual operational amplifier manufactured by Renesas Electronics Corporation. It features a BiMOS architecture combining PMOS input transistors with bipolar output stages. Key electrical parameters include a gain-bandwidth product of 4.5 MHz and a slew rate of 9 V/us. The device operates within a supply voltage range of 2 V to 18 V (single) or 4 V to 36 V (dual). Input characteristics include an offset voltage of 5 mV, bias current of 40 pA, and noise density of 40 nV/sqrt Hz. Output current capability is 40 mA per channel. The unit is housed in an 8-PDIP package.

Feature Summary

• Combines high input impedance from gate-protected PMOS transistors with the high output current drive of bipolar transistors on a single monolithic chip.
• Provides a wide common-mode input voltage range that typically extends to 0.5 V below the negative supply rail.
• Compatible with industry standard 1458 operational amplifiers when installed in similar packages.

Applications

• General-purpose analog signal processing circuits
• High-impedance buffer applications requiring low input bias current
• Replacement for legacy 1458-based designs

Procurement Notes

Verify component authenticity through authorized Renesas distributors. Confirm RoHS compliance status via official datasheets as specifications may vary by production batch. Ensure the 8-PDIP package matches the target PCB footprint. Check for obsolescence notices or lifecycle changes directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component for designs requiring a balance between MOSFET input impedance and bipolar output drive strength. It serves as a direct functional replacement for the CA3240 series. Consider the 4.5 MHz bandwidth and 9 V/us slew rate for moderate-speed signal conditioning tasks. Verify power supply constraints align with the specified 2 V to 18 V operating range.

Part Context

The CA3240E belongs to the CA3240A family of dual BiMOS operational amplifiers produced by Renesas Electronics Corporation. This series integrates the advantages of both MOS and bipolar technologies. The device is designed to offer improved performance over standard bipolar op-amps while maintaining compatibility with widely used industry-standard pinouts.

Replacement Considerations

• CA3240EZ