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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)：3V
- 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：-
- Qualification：-
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Overview
The LM4040AIM3X-3.0/NOPB is a micropower shunt voltage reference from Texas Instruments, providing a fixed output of 3V. It features an initial accuracy of ±0.1% and a temperature coefficient of 100 ppm/°C. The device operates within a junction current range up to 15 mA and maintains low noise characteristics of 35 µVrms between 10 Hz and 10 kHz. Designed for surface-mount applications, it utilizes a SOT-23-3 package and functions reliably across a temperature range of -40°C to +85°C.
Feature Summary
- Provides high precision with ±0.1% initial accuracy for stable reference voltages
- Operates as a micropower shunt regulator with minimal quiescent current consumption
- Delivers low noise performance suitable for sensitive analog signal processing
Applications
- Precision analog-to-digital converter (ADC) reference inputs
- Digital-to-analog converter (DAC) voltage references
- Battery-powered instrumentation requiring low power consumption
- Portable measurement devices needing stable voltage sources
Procurement Notes
Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS adherence. Confirm the 'X' designation in the part number corresponds to tape-and-reel packaging rather than cut tape or tube formats. Ensure the ordering code matches the required ±0.1% accuracy grade and 3V output variant to avoid functional mismatches in circuit design.
Selection Notes
Select this component when circuit requirements demand tight initial tolerance alongside low power operation. The 100 ppm/°C temperature coefficient offers improved stability over standard industrial grades. Consider the SOT-23-3 footprint constraints and verify that the maximum shunt current capability aligns with the available bias current in the target application circuit.
Part Context
This device belongs to the LM4040-N series of micropower shunt voltage references. It serves as a compact alternative to larger packages while maintaining precision specifications. The family supports various fixed output voltages, with this specific model targeting the 3V requirement. It is widely used in portable electronics where space and power efficiency are critical design parameters.
Replacement Considerations
LM4040BIM3X-3.0/NOPB provides similar functionality with ±0.2% accuracy. LM4040CEM3X-3.0/NOPB offers ±0.5% accuracy for less stringent tolerance needs. Verify pinout compatibility and thermal performance when substituting these variants.
