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Product Detailed Parameters
- Description：IC VREF SHUNT 0.1% 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 ~ 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 LM4040A20IDBZTG4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048 V with an initial accuracy of 0.1%. The device operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 150 PPM/°C. It requires a minimum cathode current of 75 µA and supports a maximum cathode current of 15 mA. Packaged in a SOT-23-3 surface-mount case, it is supplied in cut tape, reel, or MouseReel formats.
Feature Summary
- Delivers high-precision voltage referencing with 0.1% initial accuracy for critical measurement applications.
- Operates over an extended industrial temperature range from -40°C to +125°C for robust environmental performance.
- Features low power consumption suitable for battery-powered systems with minimal quiescent current draw.
Applications
- Portable instrumentation requiring stable reference voltages
- Battery-powered measurement devices
- Data acquisition systems
- Microcontroller supply monitoring
Procurement Notes
Verify the specific suffix 'G4' against the manufacturer's latest documentation to confirm compliance status and package details. Confirm that the required operating temperature range aligns with the specified -40°C to +125°C limits. Ensure the circuit design accommodates the minimum cathode current requirement of 75 µA for proper regulation. Check for any end-of-life notices as availability may be limited.
Selection Notes
Select this component when a 2.048 V reference with tight 0.1% tolerance is required in a compact SOT-23-3 package. Consider the 150 PPM/°C temperature coefficient for thermal stability needs. Evaluate the 15 mA maximum current capability against load requirements. Compare against other series variants if different voltage outputs or accuracy grades are necessary.
Part Context
This part belongs to the LM4040 family of precision micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The 'A' designation typically indicates higher accuracy, while the '20' suffix specifies the 2.048 V output. The 'DBZT' code denotes the SOT-23-3 surface-mount package configuration.
Replacement Considerations
Direct substitutes include LM4040AIM3-2.0/NOPB and LM4040AIM3X-2.0/NOPB. Verify pinout compatibility and electrical parameter equivalence before substitution.
