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Product Detailed Parameters
- Description：IC POT DGTL 1TIME PROGR 8-UMAX
- Series：*
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Taper：-
- Configuration：-
- Number of Circuits：-
- Number of Taps：-
- Resistance (Ohms)：-
- Interface：-
- Memory Type：-
- Voltage - Supply：-
- Features：-
- Tolerance：-
- Temperature Coefficient (Typ)：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Operating Temperature：-
- Resistance - Wiper (Ohms) (Typ)：-
- Grade：-
- Qualification：-
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Overview
The MAX5528GUA+ is a linear-taper digital potentiometer with an end-to-end resistance of 50kΩ and 64 wiper tap positions. It operates on a single +2.7V to +5.5V supply, drawing a maximum static current of 1.5µA. The device features a 35ppm/°C end-to-end temperature coefficient and a 5ppm/°C ratiometric coefficient. It utilizes a simple 2-wire up/down interface for wiper adjustment and includes one-time programmable memory to set and lock the power-on reset position.
Feature Summary
- One-time programmable wiper position stored after fuse programming
- 64 tap positions with linear taper characteristics
- Ultra-low 1.5µA (max) static supply current
- 35ppm/°C end-to-end and 5ppm/°C ratiometric temperature coefficients
Applications
- Mechanical potentiometer replacements
- LCD contrast control via voltage biasing
- Programmable filters with adjustable gain or cutoff frequency
- Adjustable voltage reference circuits
Procurement Notes
Verify component authenticity through authorized distributors. Confirm RoHS compliance status as indicated by the '+' suffix. Check datasheet revision history for any updates to electrical specifications or package details before finalizing procurement plans.
Selection Notes
Select the MAX5528GUA+ when a 50kΩ end-to-end resistance is required. Ensure the application supports the +2.7V to +5.5V supply range. Consider the 64-tap resolution for precision requirements. Verify that the 8-pin µMAX package dimensions fit the PCB layout constraints.
Part Context
The MAX5528GUA+ belongs to the MAX5527/MAX5528/MAX5529 family of one-time programmable, linear-taper digital potentiometers. These devices replace mechanical potentiometers using a 2-wire digital interface. The family shares identical pinouts and functional blocks, differing primarily in end-to-end resistance values: 100kΩ (MAX5527), 50kΩ (MAX5528), and 10kΩ (MAX5529).
Replacement Considerations
Direct substitutes within the same family include MAX5527GUA+ (100kΩ) and MAX5529GUA+ (10kΩ) if resistance values can be adjusted in the circuit design. Other digital potentiometers from different manufacturers require verification of pin compatibility, interface protocols, and electrical parameters.
