ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC VREF SHUNT 0.5% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- 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：-
Download product information
Overview
The LM4040CEM3-2.0/NOPB is a precision shunt voltage reference from Texas Instruments, offering a fixed output of 2.048 V with an initial accuracy of ±0.5%. Packaged in a compact SOT-23-3 surface-mount format, it operates within a temperature range of -40°C to +85°C. The device features a maximum cathode current of 15 mA and a minimum operating current of 60 µA. It exhibits a temperature coefficient of 150 ppm/°C and low noise characteristics of 35 µVrms (10Hz to 10kHz).
Feature Summary
- Provides stable reference voltage via shunt topology for circuit regulation.
- Ensures high precision through tight initial accuracy tolerances.
- Supports surface-mount integration with a compact three-pin footprint.
Applications
- Portable battery-powered instrumentation requiring low quiescent current.
- Data acquisition systems needing precise analog-to-digital conversion references.
- Temperature sensing circuits utilizing thermistors or RTDs.
Procurement Notes
Verify the specific suffix 'CEM3' against official datasheets to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for SOT-23-3 components. Confirm RoHS compliance status if required by project specifications. Cross-reference ordering information with authorized distributors to avoid counterfeit parts.
Selection Notes
Select this component when a 2.048 V reference is required in space-constrained designs. Consider the ±0.5% accuracy and 150 ppm/°C drift for applications demanding moderate stability. Evaluate the 60 µA minimum current requirement against system standby power constraints. Compare performance metrics against higher precision alternatives if tighter tolerances are necessary.
Part Context
This part belongs to the LM4040 family of micropower shunt voltage references. The series is designed for applications requiring small size and low power consumption. Variants differ primarily in output voltage, accuracy grades, and packaging options such as TO-92 or SOT-23.
Replacement Considerations
Direct substitutes include other LM4040 variants with matching 2.048 V output and SOT-23-3 packaging, such as LM4040CIM3-2.0/NOPB. Verify that replacement parts maintain equivalent accuracy and temperature coefficient specifications.
