REF3433MDBVTEP

Overview

The REF3433MDBVTEP is a precision voltage reference from the REF34xx-EP family, providing a fixed 3.3 V output. It features ±0.05% initial accuracy and a maximum temperature coefficient of 10 ppm/°C over the –55°C to 125°C range. The device operates with a supply voltage up to 12 V and delivers ±10 mA load current. Key electrical characteristics include a maximum quiescent current of 95 µA, a typical 0.1 Hz to 10 Hz noise of 3.8 µVp-p/V, and long-term stability of 25 ppm per 1000 hours at 35°C.

Feature Summary

• Enhanced product reliability with controlled baseline, single assembly and fabrication sites, and extended product life cycle.
• High precision performance with low temperature drift and excellent long-term stability for critical measurement systems.
• Low power consumption with active mode current under 95 µA and shutdown mode current below 3 µA.
• Integrated enable functionality allowing for efficient power management in battery-operated applications.

Applications

• Precision data acquisition systems
• PLC analog I/O modules
• Field transmitters
• Industrial instrumentation

Procurement Notes

Verify the specific suffix MDBVT against the manufacturer's official orderable addendum to confirm package type and tape/reel specifications. Ensure the enhanced-product (EP) designation aligns with your project's reliability requirements, as these components undergo stricter manufacturing controls than standard commercial parts. Confirm that the 6-pin SOT-23 footprint matches your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when system design requires a stable 3.3 V reference with high accuracy and low drift across wide industrial temperature ranges. The Kelvin sense pins are advantageous for minimizing trace resistance errors in high-current applications. Consider the low quiescent current and shutdown feature for portable devices where power efficiency is critical. Verify compatibility with downstream ADC/DAC inputs regarding noise and drive capability.

Part Context

This part belongs to the REF34xx-EP series, which includes variants offering 2.5 V, 3 V, and 4.096 V outputs. All members share identical pinouts, thermal characteristics, and enhanced reliability features. The family is designed to support defense, aerospace, and medical applications through controlled production sites and extended change notifications.

Replacement Considerations

The datasheet identifies MAX607x and ADR34xx families as pin-to-pin replacements. Verify that substitute parts meet the same enhanced product reliability standards and temperature coefficients if used in qualified designs.