Microchip | MCP41050-I/P

The MCP41050 series of single-channel digital potentiometer features 8-bit resolution (256 wiper steps), and an industry-standard SPI™ serial interface.

The wiper position varies linearly and is controlled via the SPI interface. The MCP41050 has a resistance value of 50 kohm, outstanding AC and DC characteristics, and consumes <1 µA during static operation. The MCP41050 is available in 8-pin PDIP and SOIC packages.

Features:

• 256 taps for each potentiometer
• Potentiometer values for 10 kΩ, 50 kΩ and 100 kΩ
• Single and dual versions
• SPI™ serial interface (mode 0,0 and 1,1)
• ±1 LSB max INL & DNL
• Low power CMOS technology
• 1 µA maximum supply current in static operation
• Multiple devices can be daisy-chained together (MCP42XXX only)
• Shutdown feature open circuits of all resistors for maximum power savings
• Hardware shutdown pin available on MCP42XXX only
• Single supply operation (2.7 V - 5.5 V)
• Industrial temperature range: -40°C to +85°C
• Extended temperature range: -40°C to +125°C

Applications:

• Audio equipment (volume and tone controls)
• Servo-motor control
• Battery charging and control
• Communications (line impedance matching)
• Power supplies
• Instrumentation (gain, offset adjust)
• LCD contrast control and programmable filters