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Product Detailed Parameters
- Description：IC VREF SHUNT 1% TO92-3
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- 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：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The LM4040DIZ-2.5/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 2.5 V with an initial accuracy of ±1%. It operates within a temperature range of -40°C to +85°C and utilizes a TO-92 three-pin package for through-hole mounting. The device supports a maximum cathode current of 15 mA and maintains a low operating current of 80 µA. Its temperature coefficient is specified at 150 ppm/°C, ensuring stable performance in precision analog applications requiring reliable voltage regulation.
Feature Summary
- Provides a stable 2.5 V reference voltage with ±1% initial accuracy
- Operates with micropower consumption suitable for battery-powered systems
- Designed for through-hole installation using the TO-92 package
Applications
- Precision analog-to-digital converter (ADC) references
- Digital-to-analog converter (DAC) voltage standards
- Portable instrumentation power supplies
Procurement Notes
Verify the complete part number including the suffix /NOPB to confirm lead-free and RoHS compliance status. Ensure the ordering code matches the specific tolerance grade and package type required for your design. Cross-reference the manufacturer's latest datasheet for any updates on pin configurations or environmental certifications before finalizing procurement specifications.
Selection Notes
Select this component when a through-hole solution is required for a 2.5 V reference with moderate precision. The TO-92 package facilitates easy prototyping and manual assembly compared to surface-mount alternatives. Consider the 150 ppm/°C temperature coefficient against application thermal stability requirements. Verify that the 80 µA minimum operating current aligns with the circuit's quiescent power constraints.
Part Context
This device belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades across different packages. The LM4040D variant specifically denotes the ±1% accuracy class. The family is designed to replace older zener diodes in applications demanding higher stability and lower noise characteristics.
Replacement Considerations
LM4040AIM3-2.5/NOPB: Surface-mount SOT-23 equivalent with tighter accuracy.
FAQ
What is the minimum operating current for the LM4040DIZ-2.5/NOPB?
The device requires a minimum cathode current of 80 µA to maintain regulation.
Does the LM4040DIZ-2.5/NOPB support automotive qualification?
No, the standard LM4040DIZ-2.5/NOPB is rated for industrial temperatures (-40°C to +85°C). Automotive-grade versions typically carry the QMI or QDI suffixes.
