CA3240AE

Overview

The CA3240AE is a dual BiMOS operational amplifier featuring PMOS input transistors and bipolar output stages. It offers a gain-bandwidth product of 4.5 MHz and a slew rate of 9 V/us. Key electrical parameters include an input bias current of 40 pA, input offset voltage of 5 mV, and common-mode rejection ratio of 70 dB. The device operates on supply voltages ranging from 2 V to 18 V (single) or 4 V to 36 V (dual), with a typical quiescent current of 8 mA per amplifier. It provides 40 mA output current capability in a standard 8-pin PDIP package.

Feature Summary

• Combines high input impedance gate-protected PMOS inputs with high-current bipolar outputs for wide common-mode range and strong drive capability.
• Provides industry-standard pinout compatibility with the NE5532/1458 series for direct replacement in existing designs.

Applications

• High-impedance sensor signal conditioning
• Audio pre-amplification stages
• General-purpose analog signal processing

Procurement Notes

Verify the manufacturer marking matches Renesas Electronics Corporation specifications. Confirm the suffix 'Z' indicates lead-free compliance if required by project standards. Ensure the package type corresponds to the 8-pin DIP configuration. Cross-reference the datasheet revision date to ensure parameter consistency with design calculations.

Selection Notes

Select this component when high input impedance is critical alongside moderate bandwidth requirements. The BiMOS technology allows operation with single or dual supplies. Consider the 40 pA bias current for applications involving high-source-impedance sensors. Verify that the 9 V/us slew rate meets the dynamic signal requirements of the target application.

Part Context

This part belongs to the CA3240A family, which are dual versions of the popular CA3140 series. The CA3240A integrates MOS and bipolar transistors on a single monolithic chip. It is designed as a drop-in replacement for standard dual operational amplifiers like the TL082 or NE5532 in similar packages.

Replacement Considerations

The CA3240AE is electrically compatible with the CA3240A. Designers may substitute it with other dual BiMOS op-amps offering similar pinouts, such as the TL082, provided input bias current and offset voltage tolerances align with the circuit requirements.

FAQ

Does the CA3240AE support rail-to-rail input?

No, the common-mode input voltage range typically extends to 0.5V below the negative supply rail, but it does not reach the positive rail.

What is the maximum supply voltage for the CA3240AE?

The maximum supply voltage is 36V when using dual supplies, or 18V for a single supply configuration.