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Product Detailed Parameters
- Description：PRECISION MICROPOWER SHUNT VREF
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：3V
- Voltage - Output (Max)：-
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-70, SOT-323
- Supplier Device Package：SC-70-3
- Grade：-
- Qualification：-
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Overview
The LM4040DEX3-3.0 is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 3.0 V with an initial accuracy of 1%. The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 150 ppm/°C. It supports a maximum shunt current of 15 mA and utilizes an SOT-23-3 surface-mount package.
Feature Summary
- Provides stable fixed voltage reference in compact surface-mount packaging
- Operates efficiently with low power consumption suitable for battery applications
- Maintains precision across industrial temperature ranges
Applications
- Portable instrumentation requiring precise voltage regulation
- Battery-powered measurement systems
- Data acquisition circuits needing stable reference sources
Procurement Notes
Verify the manufacturer designation, as this component may be sourced from Texas Instruments or Maxim Integrated due to historical corporate transitions. Confirm the specific suffix codes match the required accuracy grade and package type. Ensure compliance with RoHS standards if applicable to your manufacturing requirements. Cross-reference datasheets to confirm pinout compatibility with existing designs.
Selection Notes
Select this component when a 3.0 V reference with 1% accuracy is sufficient for the application. Consider the 150 ppm/°C temperature coefficient against stricter stability needs. Evaluate the SOT-23-3 footprint constraints against available board space. Compare operating current specifications with other shunt references to optimize power efficiency in low-power designs.
Part Context
This part belongs to the LM4040 family of micropower shunt voltage references. The series offers various fixed output voltages and accuracy grades. The DEX3 suffix typically indicates a specific tape-and-reel packaging configuration compatible with automated assembly processes. The device serves as a cost-effective solution for general-purpose voltage referencing tasks.
