Features
• Potentiometer or Rheostat configuration options
• 7-bit: Resistor Network Resolution
    - 127 Resistors (128 Steps)
• Zero Scale to Full Scale Wiper operation
• RAB Resistances: 5 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ
• Low Wiper Resistance: 100Ω (typical)
• Low Tempco:
    - Absolute (Rheostat): 50 ppm typical (0°C to 70°C)
    - Ratiometric (Potentiometer): 15 ppm typical
• I2C Protocol
    - Supports SMBus 2.0 Write Byte/Word Protocol Formats
    - Supports SMBus 2.0 Read Byte/Word Protocol Formats
• Standard I2C Device Addresses:
    - All devices offered with address “0101110”
    - MCP40D18 also offered with address “0111110”
• Brown-out reset protection (1.5V typical)
• Power-on Default Wiper Setting (Mid-scale)
• Low-Power Operation:
    - 2.5 µA Static Current (typical)
• Wide Operating Voltage Range:
    - 2.7V to 5.5V - Device Characteristics Specified
    - 1.8V to 5.5V - Device Operation
• Wide Bandwidth (-3 dB) Operation:
    - 2 MHz (typical) for 5.0 kΩ device
• Extended temperature range (-40°C to +125°C)
• Very small package (SC70)
• Lead free (Pb-free) package

Applications
• PC Servers (I2C Protocol with Command Code)
• Amplifier Gain Control and Offset Adjustment
• Sensor Calibration (Pressure, Temperature, Position, Optical and Chemical)
• Set point or offset trimming
• Cost-sensitive mechanical trim pot replacement
• RF Amplifier Biasing
• LCD Brightnes and Contract Adjustment