MAX5482:10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers

Single 1024-Tap Digital Potentiometers

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.

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
MAX5481, MAX5482, MAX5483, MAX5484: Pin Configurations
MAX5481, MAX5482, MAX5483, MAX5484: Pin Configurations
Applications/Uses
  • Gain and Offset Adjustment
  • LCD Contrast Adjustment
  • Low-Drift Programmable Gain Amplifiers
  • Mechanical Potentiometer Replacement
  • Pressure Sensors
DataSheet
titleDownload file
MAX5481-MAX5484 Data SheetMAX5481-MAX5484.pdf
Parametrics
Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
ICC @5V
(µA)
Package/PinsBudgetary
Price
typmaxSee Notes
MAX5481Linear13-Wire Serial SPINon-Volatile10241025351TQFN/16
TSSOP/14
$2.38 @1k
MAX548250TQFN/16
TSSOP/14
MAX548310TQFN/16
TSSOP/14
MAX548450TQFN/16
TSSOP/14
Quality and Environmental Data
Related Products
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  • MAX5499:10-Bit, Dual, Nonvolatile, Linear-Taper Digital Potentiometers
  • MAX5496:10-Bit, Dual, Nonvolatile, Linear-Taper Digital Potentiometers
  • MAX5494:10-Bit, Dual, Nonvolatile, Linear-Taper Digital Potentiometers
  • MAX5497:10-Bit, Dual, Nonvolatile, Linear-Taper Digital Potentiometers
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5482ETENo Longer AvailableMAX5482ETE+TQFN,;16 pin;9.6 mm²-40°C to +85°CNo
MAX5482ETE+ActiveTQFN,;16 pin;9.6 mm²-40°C to +85°CLead Free
MAX5482ETE+TActiveTQFN,;16 pin;9.6 mm²-40°C to +85°CLead Free
MAX5482ETE-TNo Longer AvailableMAX5482ETE+TQFN;16 pin-40°C to +85°CSee data sheet
MAX5482EUDNo Longer AvailableMAX5482EUD+TSSOP,;14 pin;33.4 mm²-40°C to +85°CNo
MAX5482EUD+ActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
MAX5482EUD+TActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
MAX5482EUD-TNo Longer AvailableMAX5482EUD+TTSSOP;14 pin-40°C to +85°CSee data sheet
MAX5481-MAX5484.pdf MAX5484
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Damage from a Lightning Bolt or a Spark—It Depends on How Tall You Are! MAX5484
How to Calculate the Wiper Voltage of a Digital Potentiometer MAX5482
MAX5482.pdf MAX5482
MAX5481-MAX5484.pdf MAX5484