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Product Detailed Parameters
- Description：IC VREF SHUNT 0.5% SC70-3
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 MAX6138CEXR12+T is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices / Maxim Integrated. It provides a fixed reverse breakdown voltage of 1.2205V with an initial accuracy of 0.5%. The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 25ppm/°C. It supports a wide operating current range from 60μA to 15mA and utilizes a subminiature 3-pin SC-70 surface-mount package.
Feature Summary
- Ultra-small 3-pin SC70 surface-mount package
- Laser-trimmed resistors ensure precise initial accuracy
- Low dynamic impedance for stable performance across currents
- Operational stability without external capacitors
Applications
- Portable, battery-powered equipment
- Notebook computers
- Cell phones
- Industrial process control
Procurement Notes
Verify the specific suffix 'EXR12' confirms the 1.2205V output voltage and 'C' grade indicates 0.5% initial accuracy. Confirm the '+T' designation aligns with reel packaging requirements. Ensure the component matches the SC-70-3 footprint dimensions and pin configuration before integration into the design.
Selection Notes
Select this component when space constraints require a subminiature package smaller than SOT23 alternatives. Choose based on the required 1.2205V reference level and the 0.5% accuracy tolerance. Verify that the application circuit can maintain the shunt current between 60μA and 15mA to ensure proper regulation and stability.
Part Context
This part belongs to the MAX6138 family of precision 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. All variants share the same ultra-small SC70 package and low-noise characteristics, differing primarily in their output voltage and initial accuracy grades.
Replacement Considerations
The datasheet identifies the LM4040 and LM4050 as comparable devices. These are standard shunt references but typically occupy larger packages such as SOT23. Verify pin compatibility and thermal dissipation limits when substituting.
