REF3125AIDBZR

Overview

The REF3125AIDBZR is a precision series voltage reference from the Texas Instruments REF31xx family, providing a fixed 2.5V output in a compact SOT-23-3 package. It features an initial accuracy of 0.2% and a temperature coefficient of 20 ppm/°C. The device operates with a supply current of 100 µA and supports a maximum input voltage of 5.5V. It delivers up to 10mA of output current while maintaining stability under any capacitive load without requiring external compensation capacitors. The unit functions with a low dropout voltage of 5mV at no load and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Provides stable precision voltage reference without requiring external load capacitors
• Capable of sourcing or sinking up to 10mA output current
• Operates with ultra-low power consumption suitable for battery-powered applications
• Maintains stability under any capacitive load condition

Applications

• Portable battery-operated equipment
• Test and measurement instrumentation
• Medical devices
• Power management systems

Procurement Notes

Verify the specific suffix 'R' indicates tape-and-reel packaging when ordering. Confirm the 'A' grade designation matches the required 0.2% initial accuracy specification. Ensure the SOT-23-3 footprint aligns with the target PCB layout. Check for RoHS compliance status if environmental regulations apply to the final assembly process.

Selection Notes

Select this component when a fixed 2.5V reference is required in a minimal footprint. The 20 ppm/°C temperature coefficient suits applications needing moderate thermal stability. The 10mA drive capability allows direct interfacing with ADCs or DACs without additional buffering. Consider the 100µA quiescent current for strict power budget constraints in portable designs.

Part Context

This part belongs to the REF31xx series of low-power, high-precision voltage references designed by Texas Instruments. The series offers various fixed output voltages and accuracy grades. The REF3125 specifically targets the 2.5V requirement common in data acquisition systems. The DBZR suffix denotes the surface-mount SOT-23-3 package with reel packaging for automated assembly.

Replacement Considerations

REF3125AIDBZT: Identical electrical specifications but supplied in cut-tape packaging instead of reel.