AD5171BRJZ100-R2

Overview

The AD5171BRJZ100-R2 is a 64-position, one-time programmable (OTP) digital potentiometer from Analog Devices. It features an I²C-compatible serial interface and operates within a supply voltage range of 2.7 V to 5.5 V. The device offers end-to-end resistance options including 100 kΩ, with a nominal tolerance of ±30%. Key electrical parameters include a maximum supply current of 10 μA, a typical adjustment settling time of 5 μs, and a bandwidth of 60 kHz for the 100 kΩ variant. It utilizes fuse link technology for permanent memory retention and supports an automotive temperature range of −40°C to +125°C.

Feature Summary

• One-Time Programmable (OTP) Memory: Uses fuse link technology for permanent, set-and-forget resistance settings after unlimited pre-programming adjustments.
• I²C Digital Interface: Compatible 2-wire serial bus with full read/write capability for the wiper register and extra address pin support.
• Automotive Grade Reliability: Guaranteed operation over the extended temperature range of −40°C to +125°C.
• Low Power Consumption: Maximum supply current of 10 μA during normal operation.

Applications

• System calibrations requiring permanent resistance settings
• Mechanical trimmer and potentiometer replacements
• Gain control and offset adjustments in electronic circuits
• Programmable filters with bandwidth up to 1.5 MHz

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure that the OTP programming requirements are met during design, as the device requires a dedicated voltage window of 4.75 V to 5.25 V for fuse blowing. Confirm compatibility with the target system's I²C logic levels and pull-up resistor configurations.

Selection Notes

Select this component when a non-volatile, factory-programmed digital potentiometer is required without the cost of EEPROM-based alternatives. The 100 kΩ resistance value suits applications where lower power consumption is prioritized over high bandwidth. Consider the ±30% absolute tolerance if precise resistance values are critical, or utilize potentiometer mode for ratiometric accuracy. Ensure the PCB layout accommodates the SOT-23 package dimensions.

Part Context

The AD5171 series serves as a direct replacement for mechanical trimmers in applications where resistance values do not need post-manufacturing adjustment. It belongs to Analog Devices' family of OTP digital potentiometers, designed to reduce development time by allowing computer software to handle factory programming. This eliminates the need for external microcontrollers during the programming phase.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should verify pinout and electrical parameter compatibility before substituting with other digital potentiometer families.