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Product Detailed Parameters
- Description：IC VREF SHUNT 0.2% SC70-5
- 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：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SC-70-5
- Grade：-
- Qualification：-
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Overview
The TL4051B12IDCKR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225V with an initial tolerance of ±0.2%. The device operates within a temperature range of -40°C to 85°C and utilizes a SC-70-5 surface-mount package. Key electrical characteristics include a maximum temperature coefficient of 50ppm/°C, a typical dynamic impedance of 3Ω, and a cathode current of 103µA. It functions as a two-terminal voltage reference requiring no external capacitors for stability.
Feature Summary
- Provides a fixed 1.225V output with high initial accuracy
- Operates in a compact SC-70-5 surface-mount package
- Maintains stability across wide load current ranges without external capacitors
Applications
- Data acquisition systems
- Portable instrumentation
- Battery-powered equipment
Procurement Notes
Verify the specific suffix IDCKR corresponds to the SC-70-5 package and industrial temperature grade (-40°C to 85°C). Confirm that the B-grade designation indicates the required ±0.2% initial tolerance. Ensure compatibility with existing PCB footprints for the five-terminal SC-70 configuration before finalizing component selection.
Selection Notes
Select this component when a fixed 1.225V reference is needed in space-constrained designs. The SC-70-5 package offers a smaller footprint compared to traditional SOT-23 options. The B-grade tolerance suits applications requiring tighter accuracy than standard C-grade parts but at a lower cost than A-grade specifications.
Part Context
This part belongs to the TL4051 family of micropower shunt voltage references from Texas Instruments. The family includes adjustable versions and various tolerance grades (A, B, C) packaged in SOT-23 and SC-70 formats. The TL4051 series is designed to replace bulkier zener diodes while offering superior noise performance and temperature stability.
Replacement Considerations
Check for TL4051B12IDBZR if SOT-23-3 packaging is acceptable. Verify TL4051C12IDCKR if ±0.5% tolerance is sufficient. Consider LM4041DIZ-1.2 if pinout compatibility with other legacy references is required.
