MAX4123ESA

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4123ESA is a single-channel operational amplifier from the MAX4122–MAX4129 family, manufactured by Analog Devices Inc./Maxim Integrated. It features rail-to-rail input and output capabilities, operating on a single supply voltage ranging from +2.7V to +6.5V or dual supplies of ±1.35V to ±3.25V. The device provides a gain-bandwidth product of 5MHz and a quiescent current of 650µA per amplifier. It includes a shutdown function that reduces supply current to 25µA when disabled. The unit is housed in an 8-pin SO package and operates within a temperature range of -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Rail-to-rail input common-mode voltage range and output swing for low-voltage operation
• Integrated shutdown mode reducing supply current to 25µA with high-impedance outputs
• Unity-gain stable with 5MHz gain-bandwidth product
• Capable of driving capacitive loads up to 500pF without instability

Instrumentation, Op Amps, Buffer Amps Applications

• Battery-powered instruments
• Portable equipment
• Data-acquisition systems
• Signal conditioning
• Low-power, low-voltage applications

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify component authenticity through authorized distributors. Confirm the specific suffix matches the required temperature grade and package variant. Check for RoHS compliance status as indicated in official documentation. Ensure the ordering information aligns with the intended application requirements before finalizing procurement decisions.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this model for designs requiring rail-to-rail I/O performance at low supply voltages. The integrated shutdown feature makes it suitable for battery-operated devices where power conservation is critical. Verify stability requirements against capacitive loading conditions, as the device supports loads up to 500pF directly.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the MAX4122–MAX4129 series of wide-bandwidth, low-power, single-supply rail-to-rail input/output operational amplifiers. The family offers various channel configurations and bandwidth options, with the MAX4123 specifically providing a single-channel solution with a 5MHz gain-bandwidth product and dedicated shutdown control functionality.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Other members of the MAX4122–MAX4129 family may serve as alternatives depending on channel count and bandwidth needs. Models like MAX4122 lack shutdown, while MAX4124/25/28 offer higher bandwidth but require gains of 10V/V or greater for stability.

Instrumentation, Op Amps, Buffer Amps FAQ

What is the purpose of the SHDN pin on the MAX4123?

The SHDN pin controls the shutdown mode. Pulling it low disables the amplifier, placing outputs in a high-impedance state and reducing supply current to 25µA. Leaving it floating or pulling it high enables normal operation.

Is the MAX4123 stable with capacitive loads?

Yes, the MAX4123 is stable with capacitive loads up to 500pF without requiring additional isolation resistors.

Can the MAX4123 operate with dual supplies?

Yes, it can operate from either a single supply (+2.7V to +6.5V) or dual supplies (±1.35V to ±3.25V).