X9C102P

Overview

The X9C102P is a single-channel, non-volatile digital potentiometer from the X9C10 series manufactured by Renesas Electronics. It features a 1 kΩ linear resistance taper with 100 tap points and operates on a single 5V supply. The device utilizes a 3-wire serial interface (CS, U/D, INC) to control the wiper position via internal switches. Non-volatile memory retains the wiper setting across power cycles, enabling automatic recall upon power-up. It is housed in an 8-pin PDIP package.

Feature Summary

• Non-volatile EEPROM storage for wiper position retention
• 100-tap linear resistor array with 1 kΩ end-to-end resistance
• Simple 3-wire serial control interface (Up/Down, Increment, Chip Select)
• Single 5V supply operation with low standby current

Applications

• Programmable gain amplifiers
• Audio volume control circuits
• Voltage reference trimming
• Offset voltage adjustment in operational amplifier circuits

Part Context

The X9C102P belongs to the X9C10 family of Digitally Controlled Potentiometers (XDCP). This series integrates a resistor array, wiper switching network, control logic, and non-volatile memory on a single CMOS chip. The 'P' suffix denotes the 8-lead Plastic Dual In-Line Package (PDIP), distinguishing it from surface-mount variants like the SOIC package used in the X9C102SIZ.

Replacement Considerations

Direct pin-compatible replacements within the same package include other members of the X9C10 family such as the X9C103 (10 kΩ) or X9C104 (100 kΩ), provided the resistance value matches the circuit requirements. Cross-family substitutes require verification of interface compatibility and voltage levels.