X9221AWST1

Digital Potentiometers Overview

The X9221AWST1 is a dual digitally controlled potentiometer IC manufactured by Intersil, now part of Renesas Electronics. It features two independent 10 kOhm resistive elements with linear taper and 64 tap positions for precise resistance adjustment. The device utilizes a non-volatile EEPROM memory to retain wiper settings upon power loss. Control is achieved via a standard 2-wire serial interface. It operates on a single 5 V supply with a maximum current consumption of 3 mA. The component is housed in a 20-pin SOIC package and is rated for an industrial temperature range from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual 10 kOhm digital potentiometers with 64 tap positions
• Non-volatile EEPROM storage retains wiper position after power cycle
• 2-wire serial control interface (SCLK, CS)
• Linear resistance taper for accurate voltage division

Digital Potentiometers Applications

• Programmable gain amplifiers
• Voltage reference trimming
• Audio volume control circuits
• Sensor bias adjustment

Digital Potentiometers Procurement Notes

Verify the manufacturing source as Intersil or its successor Renesas Electronics. Confirm the suffix 'T1' indicates tape-and-reel packaging if required for automated assembly. Check RoHS compliance status against specific production lots. Ensure the component meets the specified industrial temperature range requirements for the target application environment.

Digital Potentiometers Selection Notes

Select this component when dual isolated digital pots are needed with non-volatile retention. The 10 kOhm value suits moderate impedance applications. Verify that the 2-wire serial interface is compatible with the host microcontroller's available pins. Consider the SOIC-20 package size constraints during PCB layout design.

Digital Potentiometers Part Context

This part belongs to the X9221A series of EEPOTr digital potentiometers. It shares architectural similarities with other members like the X9221AWSIZ but differs in packaging format due to the T1 suffix indicating reel packaging rather than tube. The series is designed for replacing mechanical potentiometers in space-constrained designs.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include X9221AWSIZ for tube packaging. Cross-manufacturer equivalents may require schematic review due to potential differences in serial protocol implementation or voltage tolerances.