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Product Detailed Parameters
- Description：IC VREF SHUNT 0.5% 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 LM4040CIM3-3.0/NOPB is a micropower shunt voltage reference by Texas Instruments, housed in a SOT-23 package. It provides a fixed output of 3.0V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 100ppm/°C. Key electrical parameters include a maximum cathode current of 15mA, a minimum operating current of 65µA, and a noise level of 35µVrms.
Feature Summary
- Micropower operation with low quiescent current consumption
- High precision with tight initial accuracy tolerance
- Low noise performance for sensitive analog circuits
- Compact surface-mount packaging for space-constrained designs
Applications
- Portable battery-powered instrumentation
- Data acquisition systems requiring stable reference voltages
- Microcontroller analog-to-digital converter references
- Temperature sensing circuits
Procurement Notes
Verify the specific suffix 'NOPB' confirms lead-free status and RoHS compliance as per manufacturer specifications. Confirm the 'CIM3' designation matches the required SOT-23 package variant. Ensure the '-3.0' indicates the exact 3.0V output voltage needed for the circuit design. Cross-reference the full part number against official distributor catalogs to avoid confusion with similar LM4040 variants.
Selection Notes
Select this component when a precise 3.0V reference is required in a small SOT-23 footprint. It is suitable for applications demanding low power consumption and high stability over temperature. Consider the 100ppm/°C temperature coefficient for thermal environments. Compare against higher precision or lower noise alternatives if the application requires stricter tolerances than ±0.5%.
Part Context
This part belongs to the LM4040-N series of micropower shunt voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades. The CIM3 suffix specifically denotes the commercial temperature grade and SOT-23 surface-mount package configuration.
Replacement Considerations
LM4040CIM3-3.0X/NOPB is a tape-and-reel version of the same device. Other LM4040 variants with different voltage outputs or accuracy grades may serve as functional substitutes if electrical parameters align with system requirements.
