REF3033AIDBZR

Overview

The REF3033AIDBZR is a precision series voltage reference from Texas Instruments, delivering a fixed output of 3.3 V with an initial accuracy of ±0.2%. It operates within a supply voltage range of 3.35 V to 5.5 V and draws a maximum quiescent current of 50 µA, typical at 42 µA. The device features a temperature coefficient of 75 ppm/°C and supports a maximum load current of 25 mA. It functions reliably across an extended industrial temperature range of -40°C to +125°C in a compact SOT-23-3 package.

Feature Summary

• Provides high-precision voltage regulation with low temperature drift for stable reference performance
• Operates with ultra-low power consumption suitable for battery-powered and portable applications
• Maintains stability without requiring external load capacitors for compensation

Applications

• Loop-powered industrial sensors such as pressure and temperature transmitters
• Reference voltage source for analog-to-digital converters (ADCs)
• Precision data acquisition systems requiring stable voltage benchmarks

Procurement Notes

Verify the specific suffix 'AIDBZR' against the manufacturer datasheet to confirm pinout, tolerance grade, and packaging configuration. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the part number with official Texas Instruments documentation to validate authenticity and avoid counterfeit risks during sourcing.

Selection Notes

Select this component when a fixed 3.3 V reference with ±0.2% accuracy is required in a small surface-mount footprint. It is appropriate for designs prioritizing low static current and wide operating temperature ranges. Consider alternative REF30xx variants if different output voltages or tighter temperature coefficients are needed for specific circuit constraints.

Part Context

This device belongs to the REF30xx family of bandgap voltage references designed for general-purpose precision applications. The REF3033 variant specifically targets circuits needing a 3.3 V rail. It complements other PMIC components by providing a clean, stable reference potential independent of input supply variations within its specified operating window.

Replacement Considerations

REF3033AIDBZT is a tape-and-reel alternative offering identical electrical specifications but differing in packaging format.