X9C102S

Overview

The X9C102S is a digitally controlled potentiometer (XDCP) from the X9C10 series by Renesas Electronics. It features a single channel with 100 wiper tap points and a total resistance of 1 kΩ. The device utilizes a non-volatile memory to store the wiper position, allowing it to recall settings upon power-up. Control is managed via a 3-wire serial interface using CS, U/D, and INC inputs. It operates on a single 5V supply and is available in an 8-pin SOIC package.

Feature Summary

• Non-volatile memory retains wiper position for 100 years
• 100 resistive elements with linear taper
• 3-wire serial control interface (CS, U/D, INC)
• Single-channel configuration with 1 kΩ end-to-end resistance

Applications

• Signal processing parameter adjustment
• Control system gain setting
• Sensor calibration offset adjustment

Part Context

The X9C102S belongs to the X9C10 family of solid-state potentiometers. This series integrates a resistor array, wiper switches, control logic, and EEPROM into a CMOS device. It serves as a direct replacement for mechanical potentiometers in applications requiring digital control and data retention without external storage components.

FAQ

How is the wiper position controlled?

The wiper position is controlled using a 3-wire serial interface consisting of Chip Select (CS), Up/Down (U/D), and Increment (INC) signals.

What happens to the resistance setting after power loss?

The wiper position is stored in non-volatile memory, which allows the device to recall the previous setting automatically upon power-up.

What is the tolerance of the end-to-end resistance?

The end-to-end resistance has a tolerance of ±20%.