REF3425QDGKRQ1

Overview

The REF3425QDGKRQ1 is an automotive-grade, low-drift, low-power series voltage reference providing a fixed 2.5 V output. It features ±0.05% initial accuracy and a maximum temperature coefficient of 6 ppm/°C across the −40°C to +125°C operating range. The device operates with a quiescent current of 95 μA maximum and supports up to ±10 mA load current. It includes a shutdown mode drawing 3 μA maximum via an enable pin. Packaged in an 8-pin VSSOP (DGK), it meets AEC-Q100 Grade 1 standards.

Feature Summary

• Provides high-precision 2.5 V reference with ±0.05% initial accuracy and 6 ppm/°C temperature drift.
• Features low power consumption with 95 μA active current and 3 μA shutdown current.
• Includes an enable pin for system power management and low-output noise performance.
• Designed for automotive reliability with AEC-Q100 qualification and wide thermal stability.

Applications

• Body control modules
• On-board chargers
• Traction inverters
• Battery management systems
• Advanced driver assistance systems

Procurement Notes

Verify the specific suffix QDGKRQ1 corresponds to the 8-pin VSSOP package and reel/cut-tape packaging configuration. Confirm that the component meets the required AEC-Q100 Grade 1 specifications for your application environment. Ensure input voltage remains within the 12 V maximum limit and check thermal dissipation requirements for high ambient temperatures.

Selection Notes

Select this component when a stable 2.5 V reference is required for high-resolution data acquisition or ADC/DAC systems in automotive environments. Consider the DGK package size constraints and verify that the ±10 mA load capability meets the downstream circuit demands. Evaluate the low-noise characteristics if signal integrity is critical for precision measurement applications.

Part Context

This part belongs to the REF34-Q1 family of low-drift, low-power series voltage references from Texas Instruments. The family offers various fixed output voltages including 3.0 V, 3.3 V, 4.096 V, and 5.0 V. All variants share similar electrical characteristics regarding drift, noise, and power consumption, differing primarily in their nominal output voltage levels.

Replacement Considerations

Compatible substitutes within the same family include REF3430QDGKRQ1 (3.0 V), REF3433QDGKRQ1 (3.3 V), REF3440QDGKRQ1 (4.096 V), and REF3450QDGKRQ1 (5.0 V). These parts share identical pinouts, packages, and electrical profiles except for the output voltage specification.

FAQ

How does the enable pin function affect power consumption?

Pulling the ENABLE pin low places the device into shutdown mode, reducing the quiescent current to a maximum of 3 μA. In this state, the output becomes high impedance.

What is the maximum load current capability?

The REF3425QDGKRQ1 can source and sink up to 10 mA of load current while maintaining regulation within specified limits.