REF3012AIDBZR

Overview

The REF3012AIDBZR is a series voltage reference IC manufactured by Texas Instruments, housed in a SOT-23-3 surface-mount package. It provides a fixed output voltage of 1.25V with an initial accuracy tolerance of ±0.2%. The device operates within an input voltage range of 1.8V to 5.5V and supports a maximum output current of 25 mA. Key electrical specifications include a supply current of 50 µA (typical 42 µA), a temperature coefficient of 75 ppm/°C, and low noise characteristics of 14 µVp-p from 0.1Hz to 10Hz. It functions reliably across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Delivers high precision with an initial accuracy of ±0.2% for stable reference applications.
• Features ultra-low power consumption with a typical supply current of 42 µA.
• Provides robust performance with low noise density suitable for sensitive analog circuits.
• Operates over a wide temperature range from -40°C to +125°C.

Applications

• Portable battery-powered instrumentation requiring low quiescent current
• Data acquisition systems needing precise voltage references
• Industrial process control loops utilizing standard voltage levels
• Medical equipment requiring stable reference voltages in compact form factors

Procurement Notes

Verify the specific suffix 'AIDBZR' matches the required accuracy grade, package type, and tape-and-reel quantity. Confirm that the 1.25V output aligns with system requirements. Ensure compatibility with the SOT-23-3 footprint during PCB layout. Check for RoHS compliance status if environmental regulations apply to the final assembly. Validate supplier authenticity through authorized distribution channels.

Selection Notes

Select this component when a fixed 1.25V reference is required with tight initial accuracy. Consider the 75 ppm/°C temperature coefficient against thermal variations in the application environment. Evaluate the 25 mA load capability against downstream circuit demands. Compare the 42 µA supply current against battery life constraints in portable designs. Ensure the SOT-23-3 package fits within spatial limitations.

Part Context

This part belongs to the REF30xx family of low-power, high-precision voltage references from Texas Instruments. These devices are designed for applications demanding stability and low power in small packages. The REF3012 variant specifically targets the 1.25V output segment, complementing other outputs like 2.5V or 5V within the same product line for modular design flexibility.

Replacement Considerations

Direct substitutes within the same family include REF3012AIDBZT for different packaging options. Cross-family alternatives may include REF3312AIDBZR for lower temperature coefficients but higher cost. Verify pinout compatibility and thermal performance before substitution.

FAQ

What is the maximum output current capability of the REF3012AIDBZR?

The device can source up to 25 mA of output current.

Does the REF3012AIDBZR support operation below room temperature?

Yes, it is rated for operation down to -40°C.

What is the typical supply current for this voltage reference?

The typical supply current is 42 µA.