MAX4123ESA+

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4123ESA+ is a single-channel, wide-bandwidth operational amplifier from the MAX4122–MAX4129 family. It features rail-to-rail input and output capabilities with a 5MHz gain-bandwidth product and a 10V/µs slew rate. The device operates on a single supply of +2.7V to +6.5V or dual supplies of ±1.35V to ±3.25V, consuming 650µA per amplifier. It includes a shutdown mode that reduces current to 25µA and places outputs in a high-impedance state. Packaged in an 8-pin SOIC, it offers low offset voltage and stability with capacitive loads.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Rail-to-rail input common-mode range and output swing for low-voltage operation
• Integrated shutdown function reducing supply current to 25µA per amplifier
• Unity-gain stable with tolerance for up to 500pF capacitive loads
• No phase reversal for overdriven inputs

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 the specific suffix 'ESA+' against the manufacturer's official ordering information to confirm the package type (SOIC) and temperature range (-40°C to +85°C). Ensure compatibility with the required supply voltage range and shutdown logic levels. Confirm availability status through authorized distributors as stock levels may vary.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when unity-gain stability and rail-to-rail I/O are required in a single-supply environment. The MAX4123 is distinct within the family due to its 5MHz bandwidth and integrated shutdown capability. Consider the MAX4124 or MAX4125 if higher 25MHz bandwidth is needed, noting they require gains of 10V/V or greater for stability.

Instrumentation, Op Amps, Buffer Amps Part Context

The MAX4123ESA+ belongs to the MAX4122–MAX4129 series of single/dual/quad operational amplifiers. This family combines wide bandwidth with excellent DC accuracy. Unlike the MAX4124/4125/4128 which offer 25MHz bandwidth but require higher closed-loop gains, the MAX4123 provides 5MHz bandwidth while remaining stable at unity gain.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The MAX4122, MAX4126, MAX4127, and MAX4129 share the same 5MHz bandwidth and unity-gain stability characteristics. However, only the MAX4122 and MAX4124 utilize the SOT23-5 package; all others use SOIC or µMAX packages. Verify pinout compatibility before substitution.