MAX44241AUA+T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX44241AUA+T is a single-channel, ultra-precision operational amplifier featuring patented chopper-stabilized and auto-zeroing techniques to eliminate DC offset and drift. It operates from a single 2.7V to 36V supply or dual ±1.35V to ±18V supplies, consuming 0.42mA per channel. Key electrical parameters include a maximum input offset voltage of 5µV, offset drift of 20nV/°C, and 9nV/√Hz input-referred voltage noise at 1kHz. The device offers a 5MHz gain-bandwidth product, 1µs settling time, and rail-to-rail output capability within the -40°C to +125°C temperature range.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Patented auto-zeroing and chopper stabilization continuously measure and compensate input offset, eliminating drift over time and temperature while suppressing 1/f noise.
• Integrated passive EMI filter provides high impedance to radio frequency interference, preventing output degradation from electromagnetic interference.
• Rail-to-rail output stage allows operation across wide supply voltages, supporting both single and dual supply configurations for high-voltage front-end applications.

Instrumentation, Op Amps, Buffer Amps Applications

• ADC buffer amplifiers in weight scales and precision instrumentation
• Precision low-side current sensing circuits
• Transducer and load cell amplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the component matches the specific MAX44241AUA+T designation, which indicates an 8-pin µMAX package with lead-free/RoHS compliance. Confirm the operating temperature range is rated for -40°C to +125°C. Ensure the source documentation aligns with Maxim Integrated datasheet revision 7 or later to guarantee accurate parametric specifications and pinout definitions.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when ultra-low DC offset and minimal drift are critical for signal integrity in precision measurement systems. The combination of low noise and high bandwidth makes it suitable for buffering signals before high-resolution ADCs. Consider the 8-pin µMAX package constraints regarding thermal dissipation and board space requirements compared to SO or TSSOP alternatives.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MAX44241/MAX44243/MAX44246 family of 36V, low-noise, precision operational amplifiers. The MAX44241 variant specifically provides a single amplifier configuration, whereas the MAX44243 and MAX44246 offer quad and dual channels respectively. All variants share identical core performance characteristics, including the same noise profile, bandwidth, and power consumption metrics.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitutes within the same family include MAX44243ASD+ (Quad, 14-pin SO) and MAX44246ASA+ (Dual, 8-pin SO). These parts share identical electrical specifications but differ in channel count and physical package dimensions, requiring schematic and layout adjustments.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the MAX44241 handle flicker noise?

The device eliminates 1/f noise internally using chopping techniques, making it ideal for DC or sub-Hz precision applications where low-frequency noise would otherwise degrade accuracy.

What is the purpose of the integrated EMI filter?

The integrated passive EMI filter presents significant higher impedance to high-frequency signals, protecting the amplifier's output from malfunction or degradation caused by radio frequency interference.