ISL22317TFRTZ Equivalent & Substitute Parts

Part Overview

The ISL22317TFRTZ is a digital potentiometer manufactured by Renesas Electronics Corporation, designed for data acquisition applications. This device features 100k Ohm resistance with 128 taps, I2C interface control, and non-volatile memory for programmable settings. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

ISL22317TFRTZ

Renesas Electronics CorporationIn Stock: 870ISL22317TFRTZ Datasheet

Current PartRFQ

ISL22317WFRTZ

Renesas Electronics CorporationIn Stock: 1689ISL22317WFRTZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISL22317TFRTZ is determined by the following critical parameters:

• Resistance Value: 100k Ohm (primary functional requirement)
• Number of Taps: 128 (resolution specification)
• Interface Protocol: I2C (communication standard)
• Memory Type: Non-Volatile (data retention requirement)
• Supply Voltage Range: 2.7V ~ 5.5V (power compatibility)
• Operating Temperature Range: -40°C ~ 125°C (thermal envelope)
• Package Configuration: 10-WFDFN Exposed Pad (physical and thermal interface)
• Mounting Type: Surface Mount (assembly compatibility)

The ISL22317WFRTZ shares identical interface, memory, voltage, temperature, package, and mounting specifications. However, it features a 10k Ohm resistance value instead of 100k Ohm, which represents a functional difference in the potentiometer's maximum resistance characteristic. This difference must be evaluated against circuit design requirements.

Parameter Comparison

Engineering Selection Recommendations

The ISL22317TFRTZ is classified as obsolete. The ISL22317WFRTZ is the active product variant within the same XDCP™ series from Renesas Electronics Corporation.

Both parts maintain identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and MSL 1 (Unlimited). Both share the same package configuration, mounting type, supply voltage range, operating temperature range, and I2C interface protocol.

The primary distinction is the resistance value: ISL22317TFRTZ provides 100k Ohm, while ISL22317WFRTZ provides 10k Ohm. Selection between these parts depends on the specific resistance requirement of the application circuit. The ISL22317WFRTZ also carries a slightly higher tolerance specification (±4% versus ±3%).

For applications requiring 100k Ohm resistance, the ISL22317TFRTZ remains the specified component. For applications requiring 10k Ohm resistance, the ISL22317WFRTZ is the active alternative.

Frequently Asked Questions (FAQ)

Q: Can ISL22317WFRTZ directly replace ISL22317TFRTZ in all applications?

A: Direct replacement is possible only if the application circuit can function with 10k Ohm resistance instead of 100k Ohm. The resistance value is a primary functional parameter that affects circuit behavior. Physical compatibility (package, mounting, interface) is identical, but electrical compatibility depends on circuit design requirements.

Q: What are the key compatibility factors between these parts?

A: Both parts share I2C interface protocol, non-volatile memory, identical supply voltage range (2.7V ~ 5.5V), identical operating temperature range (-40°C ~ 125°C), 128 tap resolution, 10-WFDFN Exposed Pad package, and surface mount configuration. The resistance value (100k versus 10k Ohm) is the primary differentiator.

Q: Are there compliance or certification differences?

A: Both parts carry identical compliance status: ROHS3 Compliant, REACH Unaffected, and MSL 1 (Unlimited). No compliance differences exist between the two variants.

Q: What is the tolerance difference between these parts?

A: ISL22317TFRTZ specifies ±3% tolerance, while ISL22317WFRTZ specifies ±4% tolerance. Both maintain identical temperature coefficient specifications of ±10ppm/°C.

Q: Is the ISL22317TFRTZ still available for new designs?

A: The ISL22317TFRTZ is classified as obsolete. For new designs requiring 100k Ohm digital potentiometer functionality with I2C interface, this part number should be evaluated against current active alternatives from Renesas Electronics Corporation or other manufacturers within the same functional category.