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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),Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.048V
- 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 LM4040C20QDBZT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048V with an initial accuracy tolerance of ±0.5%. The device operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 150ppm/°C. It supports a maximum cathode current of 15mA and requires a minimum operating current of 74µA. Packaged in a SOT-23-3 surface-mount case, it is designed for applications requiring stable voltage references in space-constrained environments.
Feature Summary
- Provides a fixed 2.048V output with high initial accuracy
- Operates over an extended industrial temperature range
- Designed for low power consumption in portable systems
Applications
- Portable instrumentation circuits
- Battery-powered measurement devices
- Data acquisition systems requiring stable reference voltages
Procurement Notes
Verify the specific suffix codes on the component marking against the official datasheet to confirm the exact voltage, tolerance, and package variant. Ensure that the ordering information matches the required temperature grade and packaging format. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status if required by your manufacturing standards.
Selection Notes
Select this component when a precise 2.048V reference is needed in a compact SOT-23-3 package. Consider the 150ppm/°C temperature coefficient for thermal stability requirements. Evaluate the 74µA minimum current draw against your circuit's quiescent current constraints. Compare with other LM4040 variants if different output voltages or tighter tolerances are required.
Part Context
This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The 'C' designation typically indicates a specific accuracy tier, while 'Q' denotes automotive qualification. The 'DBZ' suffix specifies the SOT-23-3 surface-mount package type used in this specific model.
Replacement Considerations
LM4040C20IDBZT: Offers similar specifications but may differ in initial accuracy tolerance.
FAQ
What is the minimum operating current for the LM4040C20QDBZT?
The minimum operating current is 74µA.
Does this component support through-hole mounting?
No, the LM4040C20QDBZT is packaged in a SOT-23-3 surface-mount case.
