MAX494CPD

Instrumentation, Op Amps, Buffer Amps Overview

The MAX494CPD is a quad operational amplifier from the MAX492/MAX494/MAX495 family, manufactured by Analog Devices Inc./Maxim Integrated. It features rail-to-rail input and output operation with a gain-bandwidth product of 500kHz and unity-gain stability. The device operates on single supplies from +2.7V to +6V or split supplies (±1.35V to ±3V), drawing less than 150µA per op amp. It offers high voltage gain (108dB typical) and low offset voltage (200µV max). The component is housed in a 14-pin Plastic DIP package and is designated as Not Recommended for New Designs.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Rail-to-rail input common-mode voltage range extending beyond supply rails without phase reversal
• Rail-to-rail output swing capability for maximum dynamic range
• Micropower consumption with quiescent current under 150µA per amplifier
• High open-loop voltage gain and excellent common-mode rejection ratio

Instrumentation, Op Amps, Buffer Amps Applications

• Portable equipment requiring low-voltage operation
• Battery-powered instruments
• Data acquisition systems
• Signal conditioning circuits
• Low-voltage applications

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify component authenticity through authorized distributors due to discontinued status. Confirm package integrity and pin alignment for the 14-pin DIP format. Review datasheet revisions for any manufacturing process changes. Ensure compatibility with existing circuit designs as the part is not recommended for new implementations.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for legacy designs requiring quad amplification with rail-to-rail performance. Evaluate power constraints against the 150µA per channel draw. Consider capacitive load driving capabilities if buffering signals. Verify temperature range specifications match the operational environment requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MAX49x series of micropower, single-supply rail-to-rail op amps. It shares architectural similarities with the dual MAX492 and single MAX495 variants. The series is characterized by low noise, high precision, and wide supply voltage flexibility suitable for portable electronics.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The datasheet indicates that Maxim replacement or industry second-source options may be available. Consult technical support for specific substitute part numbers compatible with the MAX494CPD form factor and electrical characteristics.