X9C503PI

Overview

The X9C503PI is a single-channel, nonvolatile digital potentiometer manufactured by Renesas Electronics Corporation. It features a 50 kΩ end-to-end resistance with a linear taper and 100 discrete tap points. The device operates on a single 5V supply and utilizes a three-wire interface (CS, U/D, INC) for wiper control. Its internal EEPROM retains the wiper position upon power-up. The component is housed in an 8-pin PDIP package and supports an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Nonvolatile memory stores wiper position for recall at power-up
• 100-tap resolution with 50 kΩ total resistance
• Three-wire serial interface (Up/Down, Increment, Chip Select)
• Industrial temperature range (-40°C to +85°C)

Applications

• Digitally controlled resistance trimming
• Programmable voltage reference adjustment
• Audio volume control circuits

Part Context

The X9C503PI belongs to the XDCP™ family of digitally controlled potentiometers. It shares core functionality with the X9C102, X9C103, and X9C104 variants, distinguished primarily by its 50 kΩ resistance value compared to other options in the series. The 'PI' suffix indicates the plastic DIP package variant.

Replacement Considerations

Verify pin compatibility when substituting with other X9C503 variants or cross-compatible digital potentiometers. Ensure the replacement supports the required 5V supply and nonvolatile memory retention if power-up state preservation is critical.