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Product Detailed Parameters
- Description：IC VREF SHUNT 0.1% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：1.225V
- Voltage - Output (Max)：-
- Current - Output：12 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The TL4051A12IDBZT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225V with an initial accuracy of ±0.1%. The device operates within a temperature range of -40°C to +85°C and utilizes a SOT-23-3 surface-mount package. Key electrical characteristics include a maximum temperature coefficient of 50ppm/°C, typical noise of 20µVrms (0.1Hz to 10Hz), and a minimum operating current of 65µA.
Feature Summary
- Fixed 1.225V output with high initial accuracy
- Low dynamic impedance and low noise performance
- Stable operation across wide capacitive loads without external capacitors
- Micropower consumption suitable for battery-powered applications
Applications
- Data acquisition systems
- Portable instrumentation
- Battery-powered equipment
- Precision audio circuits
Procurement Notes
Verify the specific suffix IDBZT corresponds to the industrial temperature grade (-40°C to +85°C) and SOT-23-3 package configuration. Confirm that the A-grade designation matches the required ±0.1% initial accuracy tolerance for your design specifications. Ensure compatibility with standard surface-mount assembly processes.
Selection Notes
Select this component when a stable, low-noise reference voltage is required in a compact footprint. The fixed 1.225V output eliminates the need for external resistors, simplifying the circuit design. Consider the ±0.1% tolerance if tight accuracy is critical, and verify that the 65µA minimum current requirement fits within the system's power budget.
Part Context
This part belongs to the TL4051 family of micropower shunt voltage references from Texas Instruments. The family offers various accuracy grades (A, B, C) and temperature ranges (I for industrial, Q for automotive/extended). The TL4051A12IDBZT specifically represents the A-grade, industrial temperature variant in a small SOT-23-3 package.
Replacement Considerations
LM4041A12IDBZR: Similar 1.225V shunt reference with ±0.1% accuracy but higher temperature coefficient (100ppm/°C). TL4051B12IDBZR: Lower accuracy (±0.2%) but same package and temperature range.
