CA3140M

Instrumentation, Op Amps, Buffer Amps Overview

The CA3140M is a single-channel BiMOS operational amplifier manufactured by Intersil. It features a MOSFET input stage and a bipolar output stage, providing high input impedance and fast performance. Key electrical parameters include a gain-bandwidth product of 4.5 MHz and a slew rate of 9 V/µs. The device operates on supply voltages ranging from 4 V to 36 V (single) or ±2 V to ±18 V (dual). Input offset voltage is typically 5 mV with a maximum of 5000 µV for specific grades. The package is SOIC-8.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• BiMOS technology combining PMOS input transistors for high impedance with bipolar output stages for drive capability.

Instrumentation, Op Amps, Buffer Amps Applications

• Sample-and-hold amplifiers
• Photodiode detectors
• Active filters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the manufacturer source, as Intersil operations were acquired by Renesas Electronics. Confirm the suffix 'M' corresponds to the SOIC-8 surface-mount package in the official datasheet. Ensure the specific grade matches the required input offset voltage specifications.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high input impedance and low bias current are critical requirements. The BiMOS architecture offers superior speed compared to standard JFET inputs while maintaining high input resistance. Suitable for applications requiring wide supply voltage ranges and robust output drive capabilities.

Instrumentation, Op Amps, Buffer Amps Part Context

The CA3140 series was originally developed by RCA and later produced by Harris and Intersil. It is a general-purpose operational amplifier known for its unique BiMOS construction. The CA3140M variant specifically denotes the plastic surface-mount package version of this widely used analog circuit.

Instrumentation, Op Amps, Buffer Amps FAQ

What is the input impedance characteristic of the CA3140M?

The CA3140M utilizes a PMOS transistor input circuit, providing very high input impedance and extremely low input bias current.

Can the CA3140M operate with a single power supply?

Yes, the device can operate with a single power supply ranging from 4 V to 36 V, or dual supplies from ±2 V to ±18 V.