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Product Detailed Parameters
- Description：IC DGTL POT 50KOHM 256TAP 10UMAX
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Taper：Linear
- Configuration：Potentiometer, Rheostat
- Number of Circuits：2
- Number of Taps：256
- Resistance (Ohms)：50k
- Interface：SPI
- Memory Type：Volatile
- Voltage - Supply：2.6V ~ 5.5V
- Features：-
- Tolerance：±25%
- Temperature Coefficient (Typ)：35ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：10-uMAX/uSOP
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Operating Temperature：-40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ)：250
- Grade：-
- Qualification：-
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Overview
The MAX5388MAUB+ is a dual, volatile, low-voltage digital potentiometer from Analog Devices/Maxim Integrated. It features two independent 256-tap linear taper resistors with an end-to-end resistance of 50kΩ. The device operates on a single +2.6V to +5.5V supply and includes one voltage-divider configured potentiometer and one variable-resistor configured potentiometer. It utilizes an SPI-compatible interface for wiper control and maintains a low quiescent supply current of less than 1μA. The component is specified over an extended temperature range of -40°C to +125°C.
Feature Summary
- Dual 256-tap linear taper positions with 50kΩ end-to-end resistance
- Single +2.6V to +5.5V supply operation with <1μA standby current
- SPI-compatible 3-wire serial interface (CS, DIN, SCLK)
- -40°C to +125°C operating temperature range
Applications
- Low-voltage battery applications
- Portable electronics
- Mechanical potentiometer replacement
- Offset and gain control in amplifier circuits
- Adjustable voltage references and linear regulators
Procurement Notes
Verify the specific ordering suffix MAUB+ corresponds to the 10-pin µMAX package and 50kΩ resistance value. Confirm RoHS compliance status as indicated by the plus sign. Check for availability constraints or obsolescence notices directly from Analog Devices/Maxim Integrated distributors before procurement.
Selection Notes
Select this part when a dual digital potentiometer configuration is required with one voltage-divider and one variable-resistor setup. Ensure the system voltage falls within the 2.6V to 5.5V range. Verify that the 50kΩ resistance value meets circuit requirements and that the SPI interface timing matches the microcontroller capabilities.
Part Context
This component belongs to the MAX5386/MAX5388 family of dual digital potentiometers. The MAX5388 variant specifically combines a voltage-divider and a variable-resistor configuration, distinguishing it from the MAX5386 which offers two voltage-divider configurations. The 'MAUB+' designation identifies the 50kΩ resistance version in the 10-pin µMAX package.
Replacement Considerations
Direct replacements include other MAX5388 variants with different resistance values (MAX5388LAUB+ for 10kΩ, MAX5388NAUB+ for 100kΩ) if the resistance value can be adjusted in the design. Cross-family alternatives should be evaluated based on pin compatibility and SPI interface standards.
