What Is the AD5171BRJZ100-R2?
The AD5171BRJZ100-R2 is a single-channel, 64-position digital potentiometer manufactured by Analog Devices. This component allows designers to replace traditional mechanical potentiometers with a digitally controlled, highly stable alternative. It uses an I²C-compatible interface, making it ideal for applications requiring precision tuning, calibration, or programmable signal adjustment. The “100” in the part number refers to a 100-kΩ end-to-end resistance, while “R2” identifies a specific tape-and-reel packaging option used for automated assembly.
Key Features and Electrical Specifications
The AD5171BRJZ100-R2 includes several core features that make it popular in electronic design:
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64-position digital wiper for fine resistance control
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I²C-compatible serial interface
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Low power consumption, ideal for battery-driven systems
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100 kΩ resistance value with stable temperature performance
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Wide operating voltage range (2.7 V – 5.5 V)
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Compact SOT-23-6 package
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Nonvolatile memory-free design for real-time tuning
These specifications make the device useful in many adjustable-resistance applications where compactness and digital precision are essential.
Common Applications of the AD5171BRJZ100-R2
Engineers commonly use the AD5171BRJZ100-R2 in circuits requiring remotely controlled or microcontroller-driven resistance adjustments. Popular applications include:
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Programmable gain amplifiers (PGAs)
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Sensor calibration circuits
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Voltage divider adjustments
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Audio volume control systems
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Tuning RF circuits or filters
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Power-supply trimming
Its digital interface allows designers to make precise, repeatable adjustments without relying on physical knobs or manual tuning.
Package, Pinout, and Physical Characteristics
This part is provided in a SOT-23-6 surface-mount package, favored for compact PCB layouts. Key pin functions typically include:
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VDD – Power supply
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GND – Ground
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SDA / SCL – I²C communication lines
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Wiper terminal (W)
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Fixed terminals (A/B) depending on configuration
The R2 packaging indicates it is supplied in tape-and-reel format, optimized for automated pick-and-place machines used in large-volume manufacturing.
Advantages of Using the AD5171BRJZ100-R2
Designers often choose this component because it offers:
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High reliability compared to mechanical potentiometers
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Precise digital control via microcontroller or FPGA
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Space-saving SOT-23 design
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Low noise and stable resistance characteristics
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Easy integration with standard I²C devices
Its digital programmability makes it ideal for systems requiring remote adjustment, self-calibration, or automated control loops.
Where to Buy the AD5171BRJZ100-R2
The AD5171BRJZ100-R2 can be purchased through major, authorized electronic component distributors such as:
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Digi-Key
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Mouser Electronics
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Arrow
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Newark / Farnell
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Analog Devices’ official partners
Users should always buy from trusted distributors to ensure component authenticity, proper storage conditions, and full traceability.
