X9C503SZ

Overview

The X9C503SZ is a single-channel digital potentiometer from the XDCP series, manufactured by Renesas Electronics. It features a 50 kΩ end-to-end resistance with a linear taper and 100 tap points for precise adjustment. The device utilizes a non-volatile memory architecture to retain wiper position data upon power loss, recalling it automatically at startup. It operates on a single 5V supply voltage (4.5V to 5.5V range) and communicates via a simple three-wire interface consisting of Chip Select (CS), Up/Down (U/D), and Increment (INC) signals. Packaged in an 8-SOIC surface-mount case, it is designed for applications requiring programmable resistance control.

Feature Summary

• Non-volatile memory retains wiper position settings without external power
• Three-wire serial interface (CS, U/D, INC) for simplified control
• 100 discrete tap points with ±20% resistance tolerance
• Single channel configuration with 50 kΩ total resistance

Applications

• Programmable gain amplifiers
• Audio volume control circuits
• Voltage reference trimming
• Parameter adjustment in signal processing systems

Procurement Notes

Verify the specific suffix 'SZ' against the manufacturer's datasheet to confirm package dimensions and tape/reel specifications. Confirm RoHS compliance status as per the latest product change notices. Ensure the ordering quantity matches the standard tube packaging format typically associated with this part number variant.

Selection Notes

Select the X9C503SZ when a 50 kΩ resistance value is required. Compare with the X9C103SZ if a 10 kΩ value is needed, or the X9C104 if 100 kΩ is preferred. All share the same pinout and interface but differ in resistance values. Ensure the operating temperature range of 0°C to 70°C meets system requirements.

Part Context

This component belongs to the X9C10/X9C50 family of digitally controlled potentiometers. It shares architectural similarities with the X9C102, X9C103, and X9C104, differing primarily in the end-to-end resistance value. The 'XDCP' designation refers to Intersil/Renesas's proprietary technology for integrating non-volatile memory with resistive arrays.

Replacement Considerations

Direct functional substitutes within the same package include X9C103SZ (10 kΩ) and X9C104SZ (100 kΩ). For higher resolution needs, consider the X9110 series, though it requires an SPI interface and different pinout.