REF4132A40DBVRQ1

Overview

The REF4132A40DBVRQ1 is an automotive-grade series voltage reference from Texas Instruments, designed for high precision and low power consumption. It provides a fixed 4.096 V output with ±0.05% initial accuracy and a maximum temperature coefficient of 12 ppm/°C (A grade). The device operates within a wide ambient temperature range of −40°C to +125°C and features a low quiescent current of 100 μA maximum. It supports an output current of ±10 mA and includes an enable pin for shutdown control. Packaged in a compact SOT-23-5 footprint, it meets AEC-Q100 standards for reliability.

Feature Summary

• Qualified for automotive applications under AEC-Q100 standards
• Features low temperature drift and high initial accuracy
• Includes an enable pin for low-power shutdown mode
• Offers small footprint suitable for space-constrained designs

Applications

• ADAS front camera systems
• Automotive DC/DC converters
• HEV/EV on-board chargers
• Traction inverters

Procurement Notes

Verify the specific suffix DBVRQ1 corresponds to the required reel packaging and automotive qualification level. Confirm that the A-grade temperature coefficient matches system thermal requirements. Ensure input voltage exceeds the output voltage by the minimum dropout value across all operating conditions. Validate PCB layout guidelines regarding bypass capacitor placement to maintain stability.

Selection Notes

Select this component when a stable 4.096 V reference is required in automotive environments. It serves as a pin-to-pin replacement for LM4128-Q1 and LM4132-Q1 devices. Consider its low noise performance for high-resolution data converter interfaces. Evaluate the shutdown feature if power conservation during inactive periods is critical for the application design.

Part Context

This part belongs to the REF4132-Q1 family of low-drift, low-power CMOS voltage references. The family offers multiple fixed output voltages including 2.5 V, 3 V, 3.3 V, and 5 V. All variants share similar electrical characteristics and package options, differing primarily in their nominal output voltage settings while maintaining the same automotive qualification and precision specifications.

Replacement Considerations

LM4128-Q1 and LM4132-Q1 are confirmed pin-to-pin replacements.