X9221AUSIZT1

Digital Potentiometers Overview

The X9221AUSIZT1 is a dual-channel digital potentiometer IC from the X9221A series, manufactured by Renesas Electronics Corporation. It features two independent potentiometers, each with 64 tap points and a total resistance of 50 kOhms. The device utilizes a non-volatile memory architecture to store wiper positions, ensuring data retention without power. It operates on a single 5 V supply voltage with a maximum operating current of 3 mA. The component supports a 2-wire serial interface for control and communication. It is housed in a 20-lead SOIC package and is designed for surface-mount installation. The operational temperature range extends from -40°C to +85°C, supporting commercial and industrial applications.

Digital Potentiometers Feature Summary

• Dual-channel configuration with non-volatile wiper position storage
• Linear taper resistance profile with 64 discrete tap points per channel
• 2-wire serial interface for write, read, and transfer operations
• Power-on recall of saved wiper positions from non-volatile registers

Digital Potentiometers Applications

• Programmable bias voltage generation in analog circuits
• Implementation of programmable ladder networks
• Three-resistor programmable network configurations
• Gain adjustment in signal conditioning systems

Digital Potentiometers Procurement Notes

Verify the specific suffix 'T1' against official Renesas documentation to confirm tape-and-reel packaging availability, as standard listings often indicate tube packaging for this family. Confirm end-of-life status and lead times directly with authorized distributors, as the base model X9221AUSIZ is listed as obsolete in some regions. Ensure RoHS compliance details match the specific manufacturing lot requirements for your assembly process.

Digital Potentiometers Selection Notes

Select this component when a dual-channel solution with non-volatile memory is required for space-constrained designs. The 50 kOhm resistance value suits moderate impedance applications, while the 64-tap resolution provides sufficient granularity for many control loops. Consider the SOIC-20 package dimensions for PCB layout constraints. Verify that the 2-wire serial interface compatibility matches the host microcontroller's available I/O lines before finalizing the design.

Digital Potentiometers Part Context

The X9221A series belongs to Renesas' XDCP (Digitally Controlled Potentiometer) family, which integrates solid-state potentiometers with EEPROM-based non-volatile memory. This family replaces traditional mechanical potentiometers in applications requiring remote adjustment or automated calibration. The dual-channel variant offers a compact alternative to using two separate single-channel devices, reducing board space and simplifying interface management.

Digital Potentiometers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.