X9C102ST1

Overview

The X9C102ST1 is a digitally controlled potentiometer (XDCP) from the X9C10 series by Renesas Electronics. It features a single channel with a resistance value of 1 kΩ and linear taper. The device includes 100 taps for precise adjustment and utilizes non-volatile memory to retain wiper position data across power cycles. It operates on a single 5V supply voltage and communicates via a serial 3-wire interface using CS, U/D, and INC inputs. Packaged in an 8-pin SOIC format, it functions as a three-terminal potentiometer or two-terminal variable resistor.

Feature Summary

• Non-volatile memory retains wiper position upon power-up
• Serial 3-wire interface (CS, U/D, INC) for control
• 1 kΩ resistance with linear taper and 100 taps
• Single-channel configuration in 8-SOIC package

Applications

• Signal processing parameter adjustment
• Control system gain setting
• Variable resistor applications requiring persistent settings

Part Context

The X9C102ST1 belongs to the X9C10 family of digitally controlled potentiometers, which also includes the X9C103, X9C104, and X9C503. These devices share a common architecture comprising a resistor array, wiper switches, control section, and non-volatile memory. The 'ST1' suffix typically denotes a tape-and-reel packaging variant, distinct from the standard tube-packaged SZ version.

Replacement Considerations

The X9C102ST1 is listed as obsolete. A direct replacement is the X9C102SZT1, which shares identical electrical specifications but may differ in packaging or manufacturing origin details.