AD5171BRJZ10-R2

Overview

The AD5171BRJZ10-R2 is a 64-position, one-time programmable (OTP) digital potentiometer from Analog Devices. It utilizes fuse link technology to permanently retain the resistance setting after programming. The device features an I²C-compatible digital interface and operates within a supply voltage range of 2.7 V to 5.5 V. It offers end-to-end resistance options including 10 kΩ, with a nominal tolerance of ±30% and a temperature coefficient of 35 ppm/°C in rheostat mode. The component is housed in an 8-lead SOT-23 package and supports an automotive operating temperature range from −40°C to +125°C.

Feature Summary

• One-time programmable (OTP) memory using fuse link technology for permanent resistance retention
• I²C-compatible 2-wire serial digital interface with full read/write capability
• 6-bit resolution providing 64 distinct wiper positions
• Low power consumption with maximum supply current of 10 μA

Applications

• System calibrations requiring fixed resistance values
• Replacement for mechanical trimmers and variable resistors
• Automotive electronics adjustments
• Gain control and offset adjustments in signal conditioning circuits

Procurement Notes

Verify that the specific ordering suffix corresponds to the required resistance value and packaging format. Confirm that the application design accommodates the OTP programming voltage requirements, as the VDD pin must support 4.75 V to 5.25 V during the one-time programming phase. Ensure the I²C bus timing meets the specified hold and setup times for reliable communication.

Selection Notes

Select this component when a non-volatile, factory-set resistance value is needed without the cost of EEPROM-based solutions. The 10 kΩ variant is suitable for applications requiring moderate impedance levels. Consider the ±30% absolute tolerance if precise initial calibration is not critical, or utilize external trimming before OTP activation. The SOT-23-8 package is ideal for space-constrained designs.

Part Context

The AD5171 series includes variants with different end-to-end resistances such as 5 kΩ, 50 kΩ, and 100 kΩ. The BRJZ suffix indicates the specific resistance value and package type. This device serves as a cost-effective alternative to electronically erasable electrically programmable read-only memory (EEMEM) digital potentiometers for applications where the resistance setting does not need to be changed after initial programming.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.