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Digital Potentiometers
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MAX5481
10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers
Single 1024-Tap Digital Potentiometers
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Key Features
Applications/Uses
Parametric specs for Digital Potentiometers
| Steps | 1024 |
| # Potentiometers | 1 |
| Control Interface | 3-Wire Serial SPI |
| Taper | Linear |
| Wiper Memory | Non-Volatile |
| REND-TO-END (kΩ) | 10 |
| Res. Tol. (%) | 25 |
| Temp. Coeff. (ppm/°C) (typ) | 35 |
| ICC @5V (µA) (max) | 1 |
| Package/Pins | TQFN/16 TSSOP/14 |
| Budgetary Price (See Notes) | 2.65 |
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Parameters
Parametric specs for Digital Potentiometers
| Steps | 1024 |
| # Potentiometers | 1 |
| Control Interface | 3-Wire Serial SPI |
| Taper | Linear |
| Wiper Memory | Non-Volatile |
| REND-TO-END (kΩ) | 10 |
| Res. Tol. (%) | 25 |
| Temp. Coeff. (ppm/°C) (typ) | 35 |
| ICC @5V (µA) (max) | 1 |
| Package/Pins | TQFN/16 TSSOP/14 |
| Budgetary Price (See Notes) | 2.65 |
Key Features
- 1024 Tap Positions
- Power-On Recall of Wiper Position from Nonvolatile Memory
- 16-Pin (3mm x 3mm x 0.8mm) TQFN or 14-Pin TSSOP Package
- 35ppm/°C End-to-End Resistance Temperature Coefficient
- 5ppm/°C Ratiometric Temperature Coefficient
- 10kΩ and 50kΩ End-to-End Resistor Values
- Pin-Selectable SPI-Compatible Serial Interface or Up/Down Digital Interface
- 1µA (max) Standby Current
- Single +2.7V to +5.25V Supply Operation
- Dual ±2.5V Supply Operation
Applications/Uses
- Gain and Offset Adjustment
- LCD Contrast Adjustment
- Low-Drift Programmable Gain Amplifiers
- Mechanical Potentiometer Replacement
- Pressure Sensors
Description
The MAX5481–MAX5484 10-bit (1024-tap) nonvolatile, linear-taper, programmable voltage-dividers and variable resistors perform the function of a mechanical potentiometer, but replace the mechanics with a pin-configurable 3-wire serial SPI™-compatible interface or up/down digital interface. The MAX5481/MAX5482 are 3-terminal voltage-dividers and the MAX5483/MAX5484 are 2-terminal variable resistors.
The MAX5481–MAX5484 feature an internal, nonvolatile, electrically erasable programmable read-only memory (EEPROM) that stores the wiper position for initialization during power-up. The 3-wire SPI-compatible serial interface allows communication at data rates up to 7MHz. A pin-selectable up/down digital interface is also available.
The MAX5481–MAX5484 are ideal for applications requiring digitally controlled potentiometers. Two end-to-end resistance values are available (10kΩ and 50kΩ) in a voltage-divider or a variable-resistor configuration (see the Selector Guide in the full data sheet). The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric, making these devices ideal for applications requiring low-temperature-coefficient voltage-dividers, such as low-drift, programmable gain-amplifiers.
The MAX5481–MAX5484 operate with either a +2.7V to +5.25V single power supply or ±2.5V dual power supplies. These devices consume 400µA (max) of supply current when writing data to the nonvolatile memory and 1.0µA (max) of standby supply current. The MAX5481–MAX5484 are available in a space-saving (3mm x 3mm), 16-pin TQFN, or a 14-pin TSSOP package and are specified over the extended (-40°C to +85°C) temperature range.
The MAX5481–MAX5484 feature an internal, nonvolatile, electrically erasable programmable read-only memory (EEPROM) that stores the wiper position for initialization during power-up. The 3-wire SPI-compatible serial interface allows communication at data rates up to 7MHz. A pin-selectable up/down digital interface is also available.
The MAX5481–MAX5484 are ideal for applications requiring digitally controlled potentiometers. Two end-to-end resistance values are available (10kΩ and 50kΩ) in a voltage-divider or a variable-resistor configuration (see the Selector Guide in the full data sheet). The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric, making these devices ideal for applications requiring low-temperature-coefficient voltage-dividers, such as low-drift, programmable gain-amplifiers.
The MAX5481–MAX5484 operate with either a +2.7V to +5.25V single power supply or ±2.5V dual power supplies. These devices consume 400µA (max) of supply current when writing data to the nonvolatile memory and 1.0µA (max) of standby supply current. The MAX5481–MAX5484 are available in a space-saving (3mm x 3mm), 16-pin TQFN, or a 14-pin TSSOP package and are specified over the extended (-40°C to +85°C) temperature range.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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