X9318WS8IT1

Digital Potentiometers Overview

The X9318WS8IT1 is a digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics Corporation. It features a single circuit with 100 wiper tap points and a total resistance of 10 kΩ. The device utilizes a nonvolatile memory to store the wiper position, allowing it to recall settings upon power-up. Control is managed via a 3-wire serial interface consisting of Up/Down (U/D), Increment (INC), and Chip Select (CS) signals. It operates on a 5V supply voltage and is housed in an 8-SOIC surface-mount package.

Digital Potentiometers Feature Summary

• Nonvolatile memory retains wiper position for 100 years
• 100 tap points with linear taper and ±20% end-to-end resistance tolerance
• 3-wire serial control interface (U/D, INC, CS)
• Operates within -40°C to +85°C temperature range

Digital Potentiometers Applications

• LCD bias control
• Gain and offset trim circuits
• Laser diode bias control
• Voltage regulator output control

Digital Potentiometers Procurement Notes

Verify the specific suffix 'IT1' against official Renesas documentation to confirm tape-and-reel packaging and exact commercial grade specifications. Ensure compatibility with existing PCB footprints for the 8-SOIC package. Cross-reference datasheets for any recent product change notices regarding labeling or material composition updates.

Digital Potentiometers Selection Notes

Select this component when a solid-state replacement for mechanical potentiometers is required in space-constrained designs. The 10kΩ resistance value suits moderate current applications. Verify that the system logic levels align with the 3-wire serial interface requirements. Consider the ±300ppm/°C temperature coefficient if precise stability over wide thermal ranges is critical.

Digital Potentiometers Part Context

This part belongs to the X9318 series of Digitally Controlled Potentiometers from Renesas (formerly Intersil). The series offers various resistance values and package options. The 'WS8' indicates the SOIC-8 package variant, while 'I' denotes the industrial temperature range. The 'T1' suffix typically specifies the reel packaging format for automated assembly.

Digital Potentiometers Replacement Considerations

Direct substitutes include other X9318 variants with different resistance values or packages, such as X9318WS8IZ. Verify pinout compatibility before substitution. Alternative digital potentiometers from other manufacturers may require interface protocol adjustments.