TL4051A12QDBZTG4

Overview

The TL4051A12QDBZTG4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225 V with an initial accuracy of ±0.1%. The device operates within an extended temperature range of -40°C to +125°C and features a maximum temperature coefficient of 50 ppm/°C. It supports a maximum input voltage of 15 V and can handle a maximum shunt current of 12 mA. The component is housed in a SOT-23-3 surface-mount package.

Feature Summary

• Provides high-precision fixed output voltage with tight initial tolerance
• Operates stably across a wide temperature range without external capacitors
• Features low dynamic impedance and low noise characteristics

Applications

• Data acquisition systems
• Power supply monitoring circuits
• Precision instrumentation and test equipment
• Process control applications

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free status as per manufacturer documentation. Confirm availability status, as this variant may be discontinued or subject to limited supply constraints compared to standard versions. Ensure the ordering part number matches the required automotive-grade qualification and package type for integration.

Selection Notes

Select this component when a fixed 1.225 V reference with ±0.1% accuracy is required in a compact SOT-23-3 package. It is suitable for designs needing stability over an extended temperature range (-40°C to +125°C) without requiring output capacitors. Consider alternative grades if lower cost or different voltage outputs are acceptable.

Part Context

This part belongs to the TL4051 family of micropower shunt voltage references from Texas Instruments. The 'A' grade denotes the highest accuracy tier (±0.1%), while the 'Q' suffix typically indicates automotive qualification. The 'T' suffix specifies tape-and-reel packaging, and 'G4' confirms environmental compliance.

Replacement Considerations

Compatible substitutes include other TL4051 variants such as TL4051A12QDBZR or TL4051A12IDBZR, depending on packaging and qualification requirements. Verify that replacement parts maintain the same 1.225 V output, ±0.1% accuracy, and extended temperature range specifications.