MAX6126B21+T

Overview

The MAX6126B21+T is a series voltage reference from Analog Devices/Maxim Integrated, housed in an 8-pin uMAX package. It provides a fixed output of 2.048V with a maximum initial accuracy of ±0.1% and a temperature coefficient of 3ppm/°C over the -40°C to +85°C range. The device operates within a supply voltage range of 2.7V to 12.6V, drawing a typical quiescent current of 380μA. It supports sink/source currents up to 10mA and features ultra-low noise characteristics.

Feature Summary

• Features curvature-correction circuitry and laser-trimmed thin-film resistors for high precision
• Provides independent force and sense outputs (OUTF/OUTS) for remote sensing applications
• Operates with low dropout voltage and virtually constant supply current across input ranges
• Capable of driving capacitive loads between 0.1μF and 10μF without oscillation

Applications

• High-resolution A/D and D/A converters
• Precision current sources
• Digital voltmeters
• High-accuracy industrial and process control systems

Procurement Notes

Verify the specific suffix 'B' indicates the B-grade accuracy tier (+/- 0.1%) and '21' denotes the 2.048V output during procurement. Confirm the '+T' suffix corresponds to the reel packaging format required by your assembly line. Ensure the uMAX-8 package dimensions match your PCB footprint constraints before finalizing orders.

Selection Notes

Select this component when strict accuracy requirements exceed standard references but full A-grade performance is unnecessary. The B-grade specification offers a balance between cost and precision for general-purpose instrumentation. Consider the wide operating temperature range if the application involves harsh environmental conditions or automotive environments.

Part Context

This part belongs to the MAX6126 family of ultra-high-precision, ultra-low-noise series voltage references. The family includes various output voltages and grade options (A and B). The MAX6126B21+T specifically targets applications requiring stable, low-drift references in compact surface-mount designs, serving as a critical analog front-end component for data acquisition systems.

Replacement Considerations

Direct replacements include other MAX6126 variants such as MAX6126A21+T for higher accuracy or MAX6126B25+T for different voltage needs. Cross-family alternatives like the ADI ADR series may require schematic adjustments due to differing pinouts or noise profiles.