MAX6126B21+

Overview

The MAX6126B21+ is a series voltage reference with a fixed output of 2.048V in an 8-pin uMAX package. It features a maximum initial accuracy of ±0.1% and a temperature coefficient of 3ppm/°C over the -40°C to +85°C range, extending to 12ppm/°C at +125°C. The device operates from a supply voltage between 2.7V and 12.6V, drawing a typical quiescent current of 380µA. It supports up to 10mA sink/source current with a maximum dropout voltage of 200mV.

Feature Summary

• Features independent force (OUTF) and sense (OUTS) outputs for remote sensing capability
• Utilizes curvature-correction circuitry and laser-trimmed thin-film resistors
• Operates with low dropout voltage as low as 200mV
• Stable with capacitive loads ranging from 0.1µF to 10µF

Applications

• High-resolution A/D and D/A converters
• ATE equipment
• Precision current sources
• Digital voltmeters

Procurement Notes

Verify the specific suffix B21 corresponds to the required accuracy grade and package type. Confirm that the 8-pin uMAX footprint matches the design layout. Ensure the operating environment stays within the specified -40°C to +125°C temperature range for guaranteed performance parameters.

Selection Notes

Select this component when ultra-low noise and high precision are critical. The series architecture eliminates the need for external resistors found in shunt references. Consider the wide input voltage range and low quiescent current for battery-powered or efficiency-sensitive designs requiring stable reference voltages.

Part Context

This part belongs to the MAX6126 family of ultra-high-precision, ultra-low-noise series voltage references manufactured by Analog Devices / Maxim Integrated. The family offers various output voltages and packages, providing flexibility for different system requirements while maintaining consistent low-noise performance characteristics across the product line.

Replacement Considerations

Compatible alternatives include MAX6126A21+ for tighter accuracy specifications and MAX6126BASA21+ for an SOIC package variant. Verify pin compatibility and thermal characteristics before substitution.