X9401WS24I-2.7

Digital Potentiometers Overview

The X9401WS24I-2.7 is a quad digital potentiometer IC from the Renesas XDCP series, housed in a 24-SOIC surface-mount package. It integrates four independent wipers, each offering 64 taps with a nominal resistance of 10 kOhms and linear taper characteristics. The device utilizes non-volatile memory to retain wiper settings upon power loss and communicates via an SPI serial interface. It operates within a supply voltage range of 2.7 V to 5.5 V, drawing a typical operating current of 400 uA. The component supports optional addressing for multi-device configurations and functions reliably across an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• Quad configuration with four independent 10 kOhm digital potentiometers
• Non-volatile memory retains wiper position after power cycle
• SPI serial interface with optional address selection for bus expansion
• 64-tap resolution with linear taper and ±20% resistance tolerance

Digital Potentiometers Applications

• Industrial process control systems requiring adjustable gain or reference voltages
• Audio equipment for digital volume control and tone adjustment
• Programmable power supply circuits for output voltage regulation
• Sensor signal conditioning networks for impedance matching

Digital Potentiometers Procurement Notes

This component is designated as End-of-Life (EOL) by the manufacturer. Current availability is limited to existing stock or surplus channels. Verification of RoHS compliance status is required prior to procurement, as specific suffixes may indicate lead-free or standard tin-plated variants. Buyers should confirm the exact manufacturing date code and storage conditions due to the component's discontinued lifecycle status.

Digital Potentiometers Selection Notes

Select this part when a quad-channel digital potentiometer with non-volatile retention is necessary. Ensure the system design accommodates the 24-SOIC footprint and provides an SPI master interface. Verify that the application voltage does not exceed the 5.5 V maximum rating. For designs requiring I2C interfaces instead of SPI, consider the X9408 family. Check if the ±300ppm/°C temperature coefficient meets the precision requirements of the target circuit.

Digital Potentiometers Part Context

The X9401 belongs to the broader X94xx series of digital potentiometers produced by Renesas Electronics (formerly Intersil). This series is characterized by its use of CMOS technology for low power consumption and high reliability. The 'W' suffix typically denotes the wide temperature range variant (-40°C to +85°C), while 'S' indicates the SOIC package type. The 'I' suffix often specifies the industrial temperature grade.

Digital Potentiometers Replacement Considerations

Direct pin-to-pin replacements are scarce due to the EOL status. Potential substitutes include other quad digital potentiometers from manufacturers like Microchip (MCP41xxx/MCP42xxx series) or Analog Devices (AD52xx series), provided they match the SPI interface, 10k resistance value, and package dimensions. Functional equivalence must be verified against the specific non-volatile memory and address selection features.