MAX6126BASA41+

Overview

The MAX6126BASA41+ is a series-mode voltage reference from Analog Devices/Maxim Integrated, housed in an 8-pin SO package. It provides a fixed output of 4.096V with an initial accuracy of ±0.06% and a maximum temperature coefficient of 5ppm/°C over the -40°C to +85°C range. The device operates within a supply voltage range of 4.3V to 12.6V, drawing a typical quiescent current of 380µA. It supports up to 10mA of sink/source load current and features low dropout characteristics.

Feature Summary

• Features curvature-correction circuitry and laser-trimmed thin-film resistors for high precision.
• Provides independent force (OUTF) and sense (OUTS) outputs for remote sensing applications.
• Operates with virtually constant supply current regardless of input voltage variations.
• Capable of driving capacitive loads ranging from 0.1µF to 10µF without oscillation.

Applications

• High-resolution analog-to-digital and digital-to-analog converters
• Automated test equipment requiring stable references
• Precision current sources utilizing external transistors
• Digital voltmeters and high-accuracy industrial process control systems

Procurement Notes

Verify the specific suffix 'BASA41+' against the manufacturer's official ordering guide to confirm the exact grade, package type, and output voltage variant. Ensure the component meets RoHS compliance requirements for your assembly process. Confirm availability status directly with authorized distributors as supply conditions may vary.

Selection Notes

Select this part when a fixed 4.096V reference with B-grade accuracy is required. Consider the wide supply voltage range and low dropout voltage for battery-powered or variable supply designs. Evaluate the noise reduction pin capability if lower wideband noise is needed compared to standard low-noise references.

Part Context

This component belongs to the MAX6126 family of ultra-high-precision, ultra-low-noise series voltage references. The family includes various output voltages and packages, such as µMAX and SO. The B-grade designation indicates a specific tolerance band for initial accuracy and temperature coefficient suitable for general precision applications.

Replacement Considerations

Consult the official datasheet for direct cross-references. Verify that any substitute maintains the 4.096V output, 8-SOIC package, and compatible electrical specifications including accuracy and operating temperature range.

FAQ

How does the MAX6126BASA41+ handle remote sensing?

It utilizes separate OUTF and OUTS pins to cancel voltage drops in the connection lines between the reference and the load, ensuring higher accuracy at the point of use.

What is the effect of adding a capacitor to the NR pin?

Adding a 0.1µF capacitor to the Noise Reduction (NR) pin improves wideband noise performance and AC power-supply rejection, though it increases the turn-on settling time.