X9C102ST2

Overview

The X9C102ST2 is a digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics, belonging to the X9C10 series. It features a single-channel configuration with a total resistance of 1 kΩ and a linear taper. The device provides 100 wiper tap points controlled via a 3-wire serial interface (CS, U/D, INC). Wiper position data is stored in non-volatile memory, ensuring retention upon power-up. It operates on a single 5V supply, consumes a maximum active current of 3mA, and supports terminal voltages up to ±5V.

Feature Summary

• Non-volatile memory retains wiper position for 100 years
• 100 resistive elements with ±20% end-to-end resistance tolerance
• Low power CMOS technology with 500µA standby current
• Solid-state design replacing mechanical potentiometers

Applications

• Signal processing parameter adjustment
• Industrial control systems
• Audio volume or tone control circuits

Procurement Notes

Verify the manufacturer designation carefully, as the 'ST2' suffix indicates an original Xicor Inc production run. Current market availability may be limited due to the component's age. Confirm that the specific package variant matches the required PCB footprint before procurement.

Selection Notes

Select this component when a 1kΩ linear digital potentiometer with non-volatile storage is required. Ensure the application voltage does not exceed the ±5V terminal limit. Verify that the 3-wire serial interface timing requirements are compatible with the host microcontroller.

Part Context

This part is part of the X9C10 family, originally developed by Xicor Inc and later acquired by Intersil, which was subsequently acquired by Renesas Electronics. The X9C102 specifically denotes the 1kΩ resistance value within this series.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.