X9C503SIT1

Overview

The X9C503SIT1 is a single-channel digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics Corporation. It features a 50 kΩ end-to-end resistance with a linear taper and 100 tap points for precise adjustment. The device utilizes non-volatile memory to retain wiper position settings across power cycles, recalling the stored value upon power-up. It operates on a single 5V supply within a voltage range of 4.5V to 5.5V and consumes approximately 1mA of operating current. The component is housed in an 8-lead SOIC surface-mount package.

Feature Summary

• Non-volatile EEPROM storage retains wiper position data without external power
• 100-tap resolution with 50 kΩ linear resistance element
• Simple 3-wire serial interface (CS, U/D, INC) for control
• Power-on recall automatically loads saved wiper position

Applications

• Programmable gain amplifiers
• Audio volume control circuits
• Voltage reference trimming
• Sensor bias adjustment

Procurement Notes

Verify the specific suffix 'T1' against official Renesas documentation to confirm tape-and-reel packaging specifications. Ensure compatibility with the required industrial temperature range if operating conditions exceed standard commercial limits. Cross-reference the manufacturer part number with authorized distributors to confirm current availability and lead times.

Selection Notes

Select this component when a compact, non-volatile digital potentiometer is required for applications needing 50 kΩ resistance. The 8-pin SOIC package suits space-constrained PCB designs. Verify that the 3-wire interface aligns with the host microcontroller's available GPIO pins. Consider the ±20% tolerance and temperature coefficient if high precision is critical.

Part Context

This part belongs to the X9C503 family of digitally controlled potentiometers from Intersil/Renesas. It shares core functionality with variants like the X9C503SZ but may differ in packaging or environmental rating based on the suffix. The family is designed for replacing mechanical potentiometers in systems requiring remote or automated resistance adjustment.

Replacement Considerations

Direct pin-compatible substitutes include other members of the X9C503 series such as X9C503SZ or X9C503SIZ, provided the temperature range and packaging match the design requirements. Verify electrical parameters like wiper resistance and supply voltage before substitution.