MAX6126AASA41+T

Overview

The MAX6126AASA41+T 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 ±0.02% and a maximum temperature coefficient of 5ppm/°C over the -40°C to +125°C range. The device operates on a supply voltage between 4.3V and 12.6V, drawing a typical quiescent current of 550µA. It supports up to 10mA sink/source current and features remote force/sense outputs.

Feature Summary

• Ultra-low noise architecture with flicker noise as low as 1.3μVP-P (0.1Hz to 10Hz) for high-precision applications.
• Curvature-correction circuitry ensures high stability with laser-trimmed thin-film resistors.
• Independent Force and Sense outputs enable Kelvin connections to cancel trace resistance errors.
• Low dropout voltage allows operation with minimal input-to-output differential.

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this part number. Confirm that the 'A' grade designation matches the required ±0.02% initial accuracy specification. Ensure the 8-pin SO package footprint aligns with the target PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when ultra-low noise and high precision are critical requirements. The wide supply voltage range accommodates various power rails. Consider the remote sense capability if long traces connect the reference to the load. Verify that the thermal performance meets the system's dissipation needs within the specified operating temperature range.

Part Context

This device belongs to the MAX6126 family of ultra-high-precision, ultra-low-noise series voltage references. The family offers multiple output voltages and packages, including µMAX and SO. The MAX6126A variant specifically targets the highest accuracy grades within the series, distinguishing it from lower-grade B options.

Replacement Considerations

Direct substitutes include other MAX6126 variants such as MAX6126BASA41+ or different output voltage versions like MAX6126AASA21+. Cross-reference package types and accuracy grades to ensure functional compatibility.