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Product Detailed Parameters
- Description：IC VREF SHUNT 2.048V SC70
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：SC-70, SOT-323
- Supplier Device Package：SC-70-3
- Grade：-
- Qualification：-
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Overview
The MAX6138CEXR21+T is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown output voltage of 2.048V 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 SC70 surface-mount package.
Feature Summary
- Ultra-small 3-pin SC70 surface-mount package
- Laser-trimmed resistors for precise initial accuracy
- Stable operation without external stabilizing capacitors
Applications
- Portable, battery-powered equipment
- Notebook computers
- Cell phones
- Industrial process control
Procurement Notes
Verify the specific suffix 'C' indicates the 0.5% initial accuracy grade when sourcing this component. Confirm that Pin 3 remains unconnected or tied to Pin 2 during installation. Ensure the selected source resistor maintains the shunt current between 60μA and 15mA across all expected supply voltage and load conditions.
Selection Notes
Select this part when space constraints require a footprint smaller than SOT-23 packages while maintaining high precision. The 2.048V output is suitable for interfacing directly with ADCs requiring standard reference levels. Verify that the application can accommodate the required minimum operating current of 60μA for stable regulation.
Part Context
This component belongs to the MAX6138 family of precision shunt voltage references. The family offers multiple fixed reverse breakdown voltages including 1.2205V, 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V. All variants share the same ultra-small SC70 package and low dynamic impedance characteristics designed for space-critical applications.
Replacement Considerations
The MAX6138 is documented as offering higher precision in a smaller package compared to LM4040/LM4050 devices. Direct pin-compatible replacements are not explicitly listed in the provided documentation.
