MAX4038EUA+T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4038EUA+T is a dual operational amplifier manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single supply voltage ranging from +1.4V to +3.6V and consumes only 800nA of supply current per amplifier. The device features rail-to-rail outputs capable of driving loads as low as 5kΩ within 25mV of the rails. Key electrical parameters include a typical input bias current of 1.0pA, an input offset voltage of ±200µV, and a gain-bandwidth product of 4kHz. It is housed in an 8-pin µMAX package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low supply current consumption of 800nA per amplifier for extended battery life
• Rail-to-rail output stage drives 5kΩ loads with minimal voltage drop
• Low input bias current of 1.0pA (typical) minimizes loading effects
• Unity-gain stable operation without external compensation

Instrumentation, Op Amps, Buffer Amps Applications

• Battery-powered systems using single-cell lithium-ion or multi-cell NiCd/NiMH/alkaline batteries
• Portable medical instrumentation requiring low power and precision
• Micropower thermostats and potentiostats
• Electrometer amplifiers and remote sensor signal conditioning
• Active badges and pH meters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix to confirm the package type and temperature range. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing process. Confirm availability status directly with authorized distributors as stock levels fluctuate. Validate that the pin configuration matches your PCB footprint design before finalizing procurement orders.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when designing low-voltage, battery-operated circuits requiring high precision and minimal power drain. The dual-channel configuration allows for cost-effective implementation of differential or multi-stage filtering applications. Consider the 800nA quiescent current impact on total system power budget. Ensure the load impedance does not exceed the drive capability limits specified in the datasheet for optimal performance.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MAX4036–MAX4039 family of low IBIAS, rail-to-rail operational amplifiers. While the MAX4036 and MAX4037 are single-channel devices, the MAX4038 and MAX4039 provide dual-channel configurations. The MAX4038 specifically lacks the internal reference found in the MAX4039 variant, making it suitable for designs where an external reference is preferred or already present.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The MAX4036EUA+T serves as a single-channel alternative within the same series. For dual-channel applications requiring an integrated reference, the MAX4039EUA+T is the direct functional equivalent with added reference capabilities. Verify pin compatibility and electrical specifications against the original design requirements before substitution.