MAX6126AASA33+T

Overview

The MAX6126AASA33+T is a series-mode voltage reference with a nominal output of 3.300V, housed in an 8-pin SO package. It features a maximum initial accuracy of ±0.02% and a temperature coefficient of 3ppm/°C over the -40°C to +85°C range. The device operates within a supply voltage range of 3.5V to 12.6V, drawing a typical quiescent current of 380μA. It supports sink/source currents up to 10mA with a maximum dropout voltage of 0.2V.

Feature Summary

• Ultra-low noise architecture producing flicker noise as low as 1.95μVP-P (0.1Hz to 10Hz) without increased supply current.
• Curvature-correction circuitry combined with laser-trimmed thin-film resistors ensures high stability and precision.
• Force and sense outputs enable remote sensing to cancel voltage drops on connecting lines.
• Stable operation guaranteed with load capacitance ranging from 0.1μF to 10μF.

Applications

• High-Resolution A/D and D/A Converters
• ATE Equipment
• Precision Current Sources

Procurement Notes

Verify the specific suffix 'A' for A-grade accuracy and 'SA' for the SOIC-8 package against the official datasheet. Confirm the '+T' indicates tape-and-reel packaging. Ensure the component meets RoHS compliance requirements by checking the manufacturer's documentation for lead-free status before procurement.

Selection Notes

Select this part when precise 3.3V references are required with minimal drift. Verify that the input voltage remains above the minimum specified limit for the 3.3V output variant. Consider the thermal environment, as performance specifications vary between the -40°C to +85°C and -40°C to +125°C ranges.

Part Context

This component 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 fixed output voltages and packages, including μMAX and SO, designed for demanding applications requiring stable reference signals under varying conditions.

Replacement Considerations

Other members of the MAX6126 family, such as MAX6126AASA25+T or MAX6126AASA30+T, share identical pinouts and electrical characteristics except for the output voltage. Substituting these requires adjusting the circuit design to accommodate the different reference voltage levels.

FAQ

How can wideband noise be improved?

Adding a 0.1μF capacitor to the Noise Reduction (NR) pin improves wideband noise and AC power-supply rejection.

What is the purpose of the OUTS and GNDS pins?

These pins provide force and sense connections for remote sensing, allowing the cancellation of voltage drops on the lines connecting the reference to the load.