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