X9221AYSIZ

Digital Potentiometers Overview

The X9221AYSIZ is a dual digitally controlled potentiometer IC manufactured by Renesas Electronics, formerly Intersil. It features two independent 10 kOhm resistive elements with 64 tap positions for precise resistance adjustment. The device utilizes a non-volatile memory architecture to retain wiper settings upon power loss and communicates via a standard 2-wire serial interface. Operating within a supply voltage range of 4.5 V to 5.5 V, it draws approximately 3 mA of current. The component is housed in a 20-lead SOIC package and supports an industrial temperature range from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual-channel configuration with 10 kOhm resistance per channel
• Non-volatile memory retains wiper position after power cycle
• 2-wire serial control interface for simplified connectivity
• Linear taper characteristic with 64 discrete tap positions

Digital Potentiometers Applications

• Programmable gain amplifier circuits
• Voltage reference trimming
• Digital volume control in audio systems
• Calibration of sensor signals

Digital Potentiometers Procurement Notes

Verify the specific suffix 'Z' against official Renesas documentation to confirm RoHS compliance status, as historical records indicate variations in environmental compliance across the X9221A family. Confirm that the source document explicitly identifies the manufacturer as Renesas or Intersil, noting that Xicor was acquired by Intersil in 2004. Ensure the datasheet confirms the 10 kOhm resistance value, as other variants in the series exist with different resistance ratings.

Digital Potentiometers Selection Notes

Select this component when a dual-channel digital potentiometer with non-volatile storage is required for industrial applications. The 10 kOhm value and linear taper are suitable for general-purpose signal conditioning. Verify that the 2-wire serial interface aligns with the system's microcontroller capabilities. Consider the SOIC-20 package dimensions for PCB layout constraints and ensure the operating voltage matches the 5 V system rail.

Digital Potentiometers Part Context

The X9221A series belongs to the XDCP (Digitally Controlled Potentiometer) family originally developed by Xicor, which was acquired by Intersil in 2004 and later became part of Renesas Electronics. This lineage explains the presence of both Intersil and Renesas branding in technical literature. The 'YSI' suffix typically denotes the industrial temperature grade and SOIC-20 packaging, while 'Z' often indicates lead-free/RoHS compliant manufacturing processes.

Digital Potentiometers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. Designers should consult the official Renesas replacement guide for cross-references, as direct pin-compatible alternatives may require verification of electrical parameters such as wiper resistance tolerance and maximum voltage ratings.