X9C303V8

Overview

The X9C303V8 is a logarithmic Digitally Controlled Potentiometer (XDCP) manufactured by Intersil. It features a terminal voltage rating of ±5V and provides 100 taps for resistance adjustment. The device utilizes nonvolatile memory to retain the wiper position upon power loss. Control is managed via CS, U/D, and INC inputs, allowing the component to function as a three-terminal potentiometer or for parameter adjustment. Available in PDIP8, SOIC8, and TSSOP8 packages, it operates within a temperature range specified in the datasheet.

Feature Summary

• Logarithmic taper with 100 resistive element taps
• Nonvolatile memory retains wiper position after power cycle
• Terminal voltage rating of ±5V
• Increment/Decrement control interface (CS, U/D, INC)

Applications

• Three-terminal potentiometer replacement
• Parameter adjustment circuits
• Audio volume control applications requiring logarithmic response

Procurement Notes

Verify the specific suffix (e.g., V8) against the manufacturer's current product line status, as availability may vary. Confirm package type requirements such as PDIP8, SOIC8, or TSSOP8 during sourcing. Ensure the operating temperature range meets system specifications by consulting the official datasheet.

Selection Notes

Select this component when a logarithmic resistance curve is required rather than linear. Verify that the ±5V terminal voltage limit aligns with the circuit design. Ensure the PCB layout supports the chosen package style and that the digital control signals are compatible with the system logic levels.

Part Context

This part belongs to the X9C303 series of digitally controlled potentiometers from Intersil. The series includes variants with different tapers and resistance values. The X9C303 specifically denotes the logarithmic taper variant with 32kΩ total resistance and 100 positions.

Replacement Considerations

Check for direct pin-compatible substitutes within the same family, such as other X9C303 variants with different packaging or temperature ratings. Verify that any replacement maintains the logarithmic taper characteristic and nonvolatile memory functionality.