REF3040AIDBZTG4

Overview

The REF3040AIDBZTG4 is a precision series voltage reference from Texas Instruments, delivering a fixed output of 4.096V in an SOT-23-3 package. It features an initial accuracy of ±0.2% and a temperature coefficient of 75ppm/°C across the industrial range of -40°C to +125°C. The device operates with a maximum supply current of 50µA and supports a maximum shunt current of 25mA. Input voltage ranges from 4.146V to 5.5V, with noise specified at 45µVp-p (0.1Hz to 10Hz) and 128µVrms (10Hz to 10kHz).

Feature Summary

• Ultra-low power consumption suitable for battery-operated systems.
• High precision with tight initial accuracy and low temperature drift.
• Capable of sourcing up to 25mA load current without external compensation capacitors.

Applications

• Loop-powered industrial sensors and transmitters.
• Portable and handheld measurement instruments.
• Data acquisition systems requiring stable reference voltages.

Procurement Notes

Verify component status as this specific suffix variant may be obsolete or subject to production changes. Confirm RoHS compliance and moisture sensitivity level prior to integration. Cross-reference datasheet revisions to ensure parameter consistency with current design requirements.

Selection Notes

Select this part when compact size and low quiescent current are critical alongside moderate precision. Compare against REF30xx variants for different output voltages or tighter drift specifications. Ensure input voltage remains within the specified dropout range for stable regulation.

Part Context

Part of the REF30xx family of low-power, precision voltage references designed for space-constrained applications. The SOT-23-3 packaging allows for high-density PCB layouts while maintaining thermal performance across wide industrial temperature ranges.

Replacement Considerations

REF3040AIDBZR is the non-green equivalent predecessor. Verify pinout compatibility and electrical parameter equivalence before substitution in existing designs.