The MCP434X devices are non-volatile, 7-bit (129 wiper steps) digital potentiometers with EEPROM and an SPI compatible interface. The MCP434X family is available with end-to-end resistor values of 5KΩ, 10KΩ, 50kΩ and 100KΩ. These devices offer WiperLock™ Technology which allows the user unlimited reprogramming and locking of the wiper setting. It is useful for equipment that requires factory trimming or recalibration. The MCP434X devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.

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• Quad Resistor Network
• Potentiometer or Rheostat Configuration Options
• 7-bit: 128 Resistors (129 Taps)
• 5kΩ
• 10kΩ
• 50kΩ
• 100kΩ
• Zero Scale to Full Scale Wiper Operation
• Low Wiper Resistance: 75 Ω (typical)
• Absolute (Rheostat): 50 ppm typical (0°C to 70°C)
• Ratiometric (Potentiometer): 15 ppm typical
• Automatic Recall of Saved Wiper Setting
• WiperLock™ Technology
• SPI serial interface
• Brown-out reset protection (1.5V typical)
• Serial Interface Inactive current (2.5 uA typical)
• High-Voltage Tolerant Digital Inputs: Up to 12.5V
• Supports Split Rail Applications
• 2.7V to 5.5V - Device Characteristics Specified
• 1.8V to 5.5V - Device Operation
• 2 MHz (typical) for 5.0 kΩ device
• Extended temperature range (-40°C to +125°C)