CA3140AM

Instrumentation, Op Amps, Buffer Amps Overview

The CA3140AM is a single-channel BiMOS operational amplifier featuring MOSFET input and bipolar output stages. It offers 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). Key electrical parameters include an input bias current of 50 pA, input offset voltage of 15 mV, and output short-circuit protection. It is housed in an 8-pin DIP package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Combines high-voltage PMOS transistors with bipolar transistors for high input impedance and fast performance
• Includes internal frequency compensation for stability without external components
• Features output short-circuit protection for enhanced reliability
• Provides offset null capability via dedicated pins

Instrumentation, Op Amps, Buffer Amps Applications

• Sample-and-hold amplifiers
• Integrators and differentiators
• Photodiode preamplifiers
• Active filters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the manufacturer marking and date code against Intersil or Renesas specifications. Confirm the suffix 'AM' corresponds to the military-grade temperature range (-55°C to 125°C) and plastic DIP-8 package. Request the official datasheet to validate pinout and electrical limits before integration.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high input impedance and low bias current are required alongside moderate bandwidth. It serves as a direct replacement for standard JFET-input op-amps where higher slew rates are needed. Ensure the application supports the specified common-mode input voltage range relative to the supply rails.

Instrumentation, Op Amps, Buffer Amps Part Context

The CA3140 series represents a classic BiMOS technology integrating PMOS inputs with bipolar outputs. Originally developed by RCA and later produced by Harris and Intersil, it remains a standard for general-purpose high-speed applications requiring high input impedance.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Publicly confirmed substitutes include the CA3140AE and CA3140AT. Verify package compatibility and temperature range specifications when cross-referencing with other manufacturers' equivalents.