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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 ~ 125°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 TL4051A12QDBZR is a micropower shunt voltage reference from Texas Instruments, featuring a fixed output of 1.225 V with an initial accuracy of ±0.1%. It operates within an extended temperature range of -40°C to +125°C and utilizes a SOT-23-3 surface-mount package. The device supports a maximum input voltage of 15 V and a maximum shunt current of 12 mA, with a typical quiescent current of 65 µA. It exhibits a low temperature coefficient of 50 ppm/°C and low noise of 20 µVrms (10Hz to 10kHz).
Feature Summary
- Provides high precision with ±0.1% initial accuracy and low temperature drift.
- Operates stably across a wide cathode current range without requiring external capacitors.
- Designed for automotive applications with AEC-Q100 qualification.
Applications
- Automotive data acquisition systems
- Precision power supply monitoring circuits
- Portable battery-powered instrumentation
Procurement Notes
Verify the specific suffix 'G4' for RoHS compliance status as manufacturing updates may occur. Confirm the exact operating temperature grade matches the design requirement, as variants exist for industrial and extended ranges. Ensure the SOT-23-3 footprint aligns with the PCB layout specifications before finalizing procurement orders.
Selection Notes
Select this component when a fixed 1.225 V reference with tight tolerance is required in a compact form factor. It is suitable for designs needing stability under varying load conditions without output capacitance. Consider the extended temperature range capability for harsh automotive environments compared to standard industrial grades.
Part Context
This part belongs to the TL4051 family of micropower shunt references. It shares the same core architecture as other variants but offers specific accuracy and temperature performance levels. The Q-series designation indicates automotive-grade reliability and qualification standards set by Texas Instruments.
Replacement Considerations
TL4051A12QDBZT is a tape-and-reel alternative with identical electrical characteristics. LM4041A12IDBZR serves as a pin-compatible option but differs in temperature coefficient and accuracy specifications.
FAQ
Does the TL4051A12QDBZR require an output capacitor for stability?
No, the device is designed to be stable with any capacitive load and does not require an external output capacitor.
What is the maximum input voltage allowed for this reference?
The maximum series voltage input is 15 V.
