The MCP446X devices are non-volatile, 8-bit (257 wiper steps) digital potentiometers with EEPROM and an I2C compatible interface. The MCP446X 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 MCP446X 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
• 8-bit: 256 Resistors (257 Taps)
• 5kΩ
• 10kΩ
• 50kΩ
• 100kΩ
• Zero-scale to Full-scale Wiper Operation
• Low Wiper Resistance – 75Ω typical
• Absolute (Rheostat) – 50 ppm typical (0°-70°C)
• Ratiometric (Potentiometer) – 15 ppm typical
• Automatic Recall of Saved Wiper Setting
• WiperLock™ Technology
• 100 kHz
• 400 kHz
• 3.4 MHz
• High-Speed Read/Write to wiper
• Read/Write to EEPROM
• Write Protect to be enabled/disable
• WiperLock to be enabled/disabled
• Resistor Network Terminal Disconnect Feature via Terminal Control (TCON) Register
• Reset Input Pin
• Hardware Write Protect (WP) Control pin
• Software Write Protect (WP) Configuration bit
• 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
• Wide Bandwidth (-3 dB) Operation – 2 MHz typical for 5.0Ω Device
• Extended Temperature Range (-40°C to +125°C)
• Package Types: 4x4 QFN-20 and TSSOP-20
• AEC-Q100 Grade 1 quarlified