ISL23711UIU10Z Equivalent & Substitute Parts

Part Overview

The ISL23711UIU10Z is a digital potentiometer manufactured by Renesas Electronics Corporation, featuring 50kΩ resistance with 128 taps and I2C interface in a 10-MSOP surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The part operates across a supply voltage range of ±2.7V to 5.5V with linear taper configuration and volatile memory type.

Substiute Parts

ISL23711UIU10Z

Renesas Electronics CorporationIn Stock: 876ISL23711UIU10Z Datasheet

Current PartRFQ

AD5161BRMZ50

Analog Devices Inc.In Stock: 16124AD5161BRMZ50 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISL23711UIU10Z is determined by the following critical parameters:

• Resistance Value: Must be 50kΩ to maintain circuit impedance matching
• Package Type: Must be 10-MSOP to ensure PCB footprint compatibility
• Interface Protocol: Must support I2C as the primary control interface
• Number of Circuits: Must be single circuit configuration
• Mounting Type: Must be surface mount
• Memory Type: Must be volatile
• Taper Configuration: Must be linear

The AD5161BRMZ50 meets these core substitution criteria while offering enhanced specifications in tap resolution and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The AD5161BRMZ50 serves as a direct functional substitute for the obsolete ISL23711UIU10Z in applications requiring 50kΩ digital potentiometer functionality with I2C control. Both components maintain ROHS3 compliance and identical MSL ratings, supporting equivalent environmental and regulatory requirements.

The substitute part provides measurable advantages: 256-tap resolution versus 128 taps enables finer adjustment granularity, extended operating temperature range (-40°C to 125°C versus -40°C to 85°C) supports broader thermal environments, and dual interface support (I2C and SPI) offers design flexibility. The lower typical wiper resistance (50Ω versus 70Ω) and improved temperature coefficient (45ppm/°C versus ±50ppm/°C) represent performance enhancements.

Design consideration: The AD5161BRMZ50 specifies ±30% tolerance compared to the original ±20%, which may require tolerance analysis in precision applications. The substitute's active product status ensures long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the AD5161BRMZ50 replace the ISL23711UIU10Z in existing designs without PCB modification?

A: Yes. Both components use identical 10-MSOP packaging with matching pinout compatibility for I2C interface operation. No PCB layout changes are required.

Q: What is the significance of the 256-tap versus 128-tap difference?

A: The AD5161BRMZ50 provides twice the tap resolution, enabling step sizes of approximately 195Ω per tap compared to 390Ω per tap on the original. This allows finer resistance adjustment in applications requiring precise potentiometer control.

Q: Does the substitute support the same I2C protocol?

A: Yes. The AD5161BRMZ50 maintains full I2C interface compatibility. The additional SPI interface option does not affect I2C operation and can be ignored in I2C-only designs.

Q: Are there supply voltage compatibility concerns?

A: The AD5161BRMZ50 operates across 2.7V to 5.5V, which is compatible with the original's ±2.7V to 5.5V range. Both support single and dual supply configurations within these limits.

Q: How does the extended temperature range affect design decisions?

A: The substitute's -40°C to 125°C operating range exceeds the original's -40°C to 85°C specification. This provides additional thermal margin for applications in elevated temperature environments without design modification.

Q: What packaging format is the AD5161BRMZ50 supplied in?

A: The substitute is supplied in tube packaging, whereas specific packaging information for the original was not provided. Verify tape-and-reel or tube requirements for your procurement and assembly processes.