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Product Detailed Parameters
- Description：IC VREF SHUNT 1% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.048V
- Voltage - Output (Max)：-
- Current - Output：15 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 LM4040DEM3-2.0/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, providing a fixed output of 2.048 V. It features an initial accuracy of 1% and a temperature coefficient of 150 ppm/°C. The device operates within a junction current range of 60 µA to 15 mA and supports an operating temperature range from -40°C to +85°C. Packaged in a surface-mount SOT-23-3 case, it serves as a precision reference for analog circuits.
Feature Summary
- Provides stable micropower shunt voltage regulation with low quiescent current consumption.
- Delivers precise fixed output voltage with defined initial accuracy and temperature stability.
- Utilizes a compact three-terminal surface-mount package suitable for space-constrained designs.
Applications
- Precision analog-to-digital converter (ADC) reference sources
- Digital-to-analog converter (DAC) voltage references
- Battery-powered measurement instrumentation
- Portable test equipment calibration
Procurement Notes
Verify the specific suffix 'DEM3' corresponds to the SOT-23-3 package variant and confirm the '-2.0' designation matches the required 2.048V output level. Ensure the '/NOPB' indicates lead-free compliance if RoHS standards are mandatory for your assembly process. Cross-reference the manufacturer's latest datasheet to confirm active status and any recent packaging or material changes.
Selection Notes
Select this component when a fixed 2.048V reference is required with moderate precision (1%) and low power consumption. It is suitable for applications where the SOT-23-3 footprint is preferred over through-hole options. Consider the 150 ppm/°C temperature coefficient against application thermal requirements. Compare against higher precision variants like the CIM3 series if tighter tolerance is needed.
Part Context
This part belongs to the LM4040-N family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The DEM3 suffix specifically denotes the SOT-23-3 surface-mount package configuration, distinguishing it from other package types like TO-92 or larger SOT packages within the same product line.
Replacement Considerations
Public documentation identifies LM4040DEM3-2.0/NOPB as the direct equivalent. For legacy sourcing, verify compatibility with LM4040DEM3-2.0. Higher precision alternatives in the same package include the LM4040CIM3-2.0/NOPB (0.5% accuracy). Ensure substitute parts match the 2.048V output and SOT-23-3 form factor.
