REF3140AIDBZT

Overview

The REF3140AIDBZT is a precision series voltage reference from Texas Instruments, delivering a fixed output of 4.096 V. It features an initial accuracy of 0.2% and a temperature coefficient of 20 ppm/°C. The device operates with a quiescent current of 100 µA and supports a maximum input voltage of 5.5 V. It provides a maximum shunt current of 10 mA and functions within a temperature range of -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount case, it is designed for high-stability applications requiring low power consumption.

Feature Summary

• Provides stable 4.096 V output with 0.2% initial accuracy
• Low temperature drift of 20 ppm/°C ensures thermal stability
• Ultra-low power consumption with 100 µA quiescent current
• Compact SOT-23-3 package suitable for space-constrained designs

Applications

• Precision analog-to-digital converter (ADC) references
• Data acquisition systems requiring stable voltage sources
• Industrial process control instrumentation
• Medical equipment signal conditioning circuits

Procurement Notes

Verify the specific suffix 'TG4' or 'R' against the required packaging format, as these indicate reel or cut tape options. Confirm RoHS compliance status through official datasheets. Check for obsolescence notices, as some variants may be nearing end-of-life. Ensure the selected part matches the exact temperature coefficient and accuracy grade required for the application.

Selection Notes

Select this component when a 4.096 V reference with 0.2% accuracy and 20 ppm/°C drift is required. Compare against REF3040 or REF2940 if lower cost or different current specs are acceptable. Ensure input voltage remains above 4.146 V for proper regulation. Verify that the 10 mA load capability meets the circuit demands without exceeding thermal limits in the SOT-23-3 package.

Part Context

Part of the REF31xx family of precision voltage references. Designed for applications demanding higher accuracy than standard references. Commonly used in sensor interfaces and measurement systems. Competes with similar offerings from Analog Devices and Maxim Integrated in the precision reference market segment.

Replacement Considerations

REF3140AIDBZR offers identical electrical specifications with reel packaging. REF3040AIDBZT provides similar voltage but with 75 ppm/°C drift. REF2940AIDBZT is a lower-cost alternative with 100 ppm/°C drift. Verify pinout compatibility and thermal performance when substituting.