REF4132B33DBVR

Overview

The REF4132B33DBVR is a precision series voltage reference manufactured by Texas Instruments, housed in an SOT-23-5 surface-mount package. It provides a fixed output voltage of 3.3 V with an initial accuracy of ±0.05%. The device features a temperature coefficient of 30 ppm/°C and operates within an input voltage range of 3.05 V to 5.5 V. It draws a supply current of 100 µA and supports a maximum shunt current of 10 mA. The component functions reliably across an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Delivers high-precision voltage regulation with ±0.05% initial accuracy for stable reference applications.
• Operates efficiently with low power consumption, drawing only 100 µA of supply current.
• Maintains consistent performance over wide thermal variations with a 30 ppm/°C temperature coefficient.

Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Battery-powered instrumentation requiring low quiescent current

Procurement Notes

Verify the specific suffix 'B33' confirms the 3.3 V output variant when sourcing. Confirm the 'DBVR' suffix indicates the SOT-23-5 package type. Ensure compatibility with RoHS standards if required by your manufacturing process. Check for automotive qualification requirements, as standard REF4132 parts differ from the REF4132-Q1 automotive grade variants.

Selection Notes

Select this component when a compact footprint is required alongside high accuracy. The 3.3 V output suits systems interfacing directly with 3.3 V logic or ADCs. Consider the 100 µA supply current for battery life optimization. Verify that the 30 ppm/°C drift meets the system's long-term stability requirements compared to lower-drift alternatives.

Part Context

This part belongs to the REF4132 family of low-drift, low-power series voltage references. It shares the same core architecture and pinout as other REF4132 variants but is distinguished by its specific 3.3 V output voltage setting. The family is designed to replace larger, higher-power references in space-constrained designs.

Replacement Considerations

Direct functional substitutes include LM4132BMFX-3.3/NOPB and REF3233AIDBVR. Verify pin compatibility and output voltage tolerance differences before substitution. Automotive applications may require the REF4132-Q1 series instead of the commercial REF4132.