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Product Detailed Parameters
- Description：VOLTAGE REFERENCE
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：1.2205V
- Voltage - Output (Max)：-
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-70, SOT-323
- Supplier Device Package：SC-70-3
- Grade：-
- Qualification：-
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Overview
The MAX6138BEXR12 is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices under the Maxim Integrated brand. It provides a fixed reverse breakdown voltage of 1.2205V and is housed in a subminiature 3-pin SC-70 surface-mount package measuring 1.8mm x 1.8mm. The device features laser-trimmed resistors for precise initial accuracy with a temperature coefficient of 25ppm/°C. It operates within a junction temperature range of -40°C to +85°C and supports a maximum shunt current of 15mA.
Feature Summary
- Two-terminal shunt architecture designed for space-critical applications
- Laser-trimmed resistors ensure high initial accuracy grades
- Low temperature coefficient for stable performance across operating ranges
Applications
- Portable electronic devices requiring minimal footprint
- Battery-powered instrumentation systems
- Precision analog-to-digital converter references
Procurement Notes
Verify the specific suffix codes against official manufacturer documentation to confirm exact accuracy grade and packaging configuration. Ensure compatibility with standard SC-70 footprints during schematic capture. Confirm RoHS compliance status through current datasheet revisions before finalizing procurement orders.
Selection Notes
Select this component when strict board area constraints exist alongside requirements for stable voltage referencing. Evaluate thermal management needs based on the maximum shunt current rating. Compare initial accuracy grades available within the series to match circuit tolerance requirements without over-specifying performance capabilities.
Part Context
This part belongs to the MAX6138 family of shunt voltage references. The family offers multiple fixed reverse breakdown voltages including 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V variants. All members share the same compact SC-70 package and core bandgap technology optimized for low-power portable electronics.
Replacement Considerations
Direct substitutes include other MAX6138 variants with different output voltages such as MAX6138BEXR21 or MAX6138BEXR41 if voltage levels differ. Verify pinout compatibility and thermal characteristics when considering cross-brand alternatives.
