X9221AWSIZ Digital Potentiometer Equivalent & Substitute Parts

Part Overview

The X9221AWSIZ is a digital potentiometer manufactured by Renesas Electronics Corporation, classified as a Data Acquisition component. This 10kΩ dual-circuit device features a 64-tap I2C interface with non-volatile memory and is housed in a 20-SOIC surface mount package. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and component procurement.

Substiute Parts

X9221AWSIZ

Renesas Electronics CorporationIn Stock: 1529X9221AWSIZ Datasheet

Current PartRFQ

CAT5221WI-10-T1

onsemiIn Stock: 1597CAT5221WI-10-T1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the X9221AWSIZ is determined by strict equivalence across the following critical parameters:

• Resistance value: 10kΩ
• Number of circuits: 2
• Number of taps: 64
• Interface protocol: I2C
• Memory type: Non-Volatile
• Taper characteristic: Linear
• Package type: 20-SOIC
• Mounting method: Surface Mount
• Operating temperature range: -40°C ~ 85°C
• Tolerance specification: ±20%
• Temperature coefficient: ±300ppm/°C
• Selectable address feature

The CAT5221WI-10-T1 manufactured by onsemi meets all these critical substitution criteria, establishing it as a direct functional equivalent for the obsolete X9221AWSIZ.

Parameter Comparison

Engineering Selection Recommendations

The CAT5221WI-10-T1 is the identified substitute for the obsolete X9221AWSIZ. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The supply voltage specification for the CAT5221WI-10-T1 (2.5V ~ 6V) encompasses the X9221AWSIZ operating point (5V), ensuring compatibility in existing 5V supply designs. Both devices maintain identical functional specifications across resistance value, circuit count, tap resolution, I2C interface, non-volatile memory, and operating temperature range. The difference in typical wiper resistance (40Ω versus 80Ω) reflects manufacturing variation within the ±20% tolerance specification and does not affect substitution validity for standard potentiometer applications.

Frequently Asked Questions (FAQ)

Q: Can the CAT5221WI-10-T1 directly replace the X9221AWSIZ in existing designs?

A: Yes. Both components share identical functional specifications: 10kΩ resistance, 2 circuits, 64 taps, I2C interface, non-volatile memory, linear taper, 20-SOIC package, and -40°C to 85°C operating range. The supply voltage range of the CAT5221WI-10-T1 (2.5V ~ 6V) is compatible with the X9221AWSIZ 5V specification.

Q: What is the significance of the different wiper resistance values (40Ω vs 80Ω)?

A: The wiper resistance difference falls within the ±20% tolerance specification for both devices and represents normal manufacturing variation. This parameter does not affect substitution suitability for standard digital potentiometer applications.

Q: Are there any package or mounting differences between these parts?

A: No. Both the X9221AWSIZ and CAT5221WI-10-T1 use identical 20-SOIC surface mount packaging with 0.295" (7.50mm) width, ensuring mechanical and electrical compatibility on existing PCBs.

Q: Do both parts meet current compliance standards?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement and use.

Q: What is the difference between the packaging formats listed?

A: The X9221AWSIZ packaging format is not specified in the provided data. The CAT5221WI-10-T1 is supplied in Tape & Reel (TR) format. Both use the same 20-SOIC component package.