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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)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：15 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：Automotive
- Qualification：AEC-Q100
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Overview
The LM4040QAIM3-2.5/NOPB is a micropower shunt voltage reference from Texas Instruments, offering a fixed output of 2.5 V with an initial accuracy of ±0.1%. It operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 100 ppm/°C. The device supports a maximum cathode current of 15 mA and minimum operating current of 80 µA. Packaged in SOT-23-3, it meets AEC-Q100 automotive qualification standards.
Feature Summary
- Automotive-grade reliability certified under AEC-Q100 standards for extended temperature operation up to 125°C
- High precision performance with ±0.1% initial accuracy and low temperature drift of 100 ppm/°C
- Micropower design enabling efficient operation with minimal quiescent current consumption
Applications
- Automotive data acquisition systems requiring stable reference voltages
- Precision analog-to-digital converter (ADC) reference inputs
- Battery-powered instrumentation circuits
Procurement Notes
Verify the specific suffix 'QAI' confirms AEC-Q100 automotive qualification and ±0.1% accuracy class. Ensure the package matches SOT-23-3 dimensions. Confirm RoHS compliance status as indicated by the NOPB suffix. Cross-reference the manufacturer part number against official TI databases to validate availability and lifecycle status before procurement.
Selection Notes
Select this component when automotive qualification and high precision are required simultaneously. The 2.5 V output suits applications needing lower reference levels than standard 2.5 V or 5 V rails. Consider the 100 ppm/°C drift for thermal stability requirements. Compare against non-automotive variants if cost sensitivity outweighs qualification needs.
Part Context
Part of the LM4040-N series of micropower shunt references. This family provides various fixed voltage options in compact packages. The QAI variant specifically targets automotive electronics, distinguishing itself through rigorous qualification testing and tighter tolerance specifications compared to commercial grade counterparts.
Replacement Considerations
LM4040AIM3-2.5/NOPB offers similar electrical characteristics but lacks automotive qualification. LM4040EIM3-2.5/NOPB provides 1% accuracy. Verify pinout compatibility and thermal performance when substituting.
