X9418WV24I

Digital Potentiometers Overview

The X9418WV24I is a dual digitally controlled potentiometer (XDCP) from the X9418 series, manufactured by Renesas Electronics. It integrates two independent 10kΩ resistor arrays, each providing 64 taps for precise resistance adjustment. The device utilizes a 2-wire serial interface (SCL/SDA) for communication and includes a volatile Wiper Counter Register alongside four nonvolatile Data Registers per potentiometer. Operating with a system supply voltage of 5V ±10% and analog supplies ranging from ±2.7V to ±5.5V, it features low power consumption with standby current under 1µA. The component is housed in a 24-lead TSSOP package and supports an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual 10kΩ potentiometers with 64-tap resolution and linear taper
• 2-wire serial interface supporting up to 16 devices on the bus via address inputs A0-A3
• Nonvolatile memory storage: 4 Data Registers per pot retain settings for 100 years with 100,000 write endurance
• Low power CMOS technology with standby current <1µA and operating voltage VCC = 5V ±10%

Digital Potentiometers Applications

• Variable gain control in audio and signal processing circuits
• Offset voltage adjustment in operational amplifier configurations
• Parameter tuning in battery-operated systems due to low standby current
• Voltage regulator feedback network adjustment

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'I' confirms the industrial temperature range (-40°C to +85°C) and 10kΩ resistance value. Confirm the package type matches the 24-lead TSSOP form factor. Check for RoHS compliance status if lead-free requirements are mandatory for the assembly process. Ensure the design accounts for the 'Not Recommended for New Designs' status indicated in the datasheet.

Digital Potentiometers Selection Notes

Select this component when dual isolated digital pots are required with nonvolatile position storage. The 10kΩ value suits moderate impedance applications; verify against load requirements to ensure wiper current limits (±3mA) are not exceeded. The 2-wire interface requires compatible SCL/SDA pins on the host microcontroller. Consider the ±5.5V analog supply capability if bipolar signal handling is necessary.

Digital Potentiometers Part Context

The X9418WV24I belongs to the X9418 family of low noise, low power digitally controlled potentiometers. It shares architectural similarities with variants like the X9418YV24I (2.5kΩ) but differs in resistance value and temperature grade. The 'WV' prefix typically denotes the commercial temperature range variant in some contexts, but the 'I' suffix explicitly defines the industrial range for this specific part number as per the ordering information table.

Digital Potentiometers Replacement Considerations

The datasheet explicitly states 'No Recommended Replacement'. Engineers should evaluate parametrically similar dual XDCPs with 2-wire interfaces and nonvolatile memory, ensuring pin compatibility and electrical specifications match the original design constraints.