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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 ~ 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 LM4040C20QDBZTG4 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 0.5%. The device operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 150 PPM/°C. It supports a maximum shunt current of 15 mA and requires a minimum operating current of 75 µA. The component is housed in a SOT-23-3 surface-mount package.
Feature Summary
- Provides stable 2.048 V reference output with 0.5% initial accuracy
- Operates across extended industrial temperature range up to 125°C
- Designed for low-power applications with micropower consumption
Applications
- Portable battery-powered instrumentation
- Data acquisition systems requiring precise voltage references
- Handheld meters and test equipment
Procurement Notes
Verify the Q suffix indicates automotive qualification requirements. Confirm RoHS compliance status through official documentation. Ensure the DBZT package variant matches design constraints. Check for end-of-life notices or lifecycle changes before finalizing procurement plans.
Selection Notes
Select this component when a 2.048 V reference with 0.5% tolerance is required. Consider the 150 PPM/°C temperature coefficient for thermal stability needs. Verify that the SOT-23-3 package fits the PCB layout. Ensure supply current requirements stay within the 75 µA to 15 mA operational window.
Part Context
This part belongs to the LM4040 series of precision shunt voltage references. The C suffix denotes 0.5% accuracy, while Q indicates automotive grade qualification. The DBZT suffix specifies the SOT-23-3 tape-and-reel packaging format. The G4 suffix typically signifies lead-free and RoHS-compliant manufacturing.
Replacement Considerations
LM4040C20IDBZTG4 offers similar specifications but lacks automotive qualification. LM4040C20QDBZR provides the same electrical performance in standard reel packaging. Verify pinout compatibility and thermal characteristics when substituting.
