AD5171BRJZ5-R2

Overview

The AD5171BRJZ5-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 values of 5 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ with a nominal tolerance of ±30%. Key electrical parameters include a maximum supply current of 10 μA, a typical power-up settling time of 5 μs, and operation over an automotive temperature range of −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 interface with full read/write capability for the wiper register
• Compact 8-lead SOT-23 package suitable for space-constrained designs
• Low power consumption with a maximum supply current of 10 μA

Applications

• System calibrations requiring fixed resistance settings
• Replacement for mechanical trimmers and variable resistors
• Automotive electronics adjustments
• Gain control and offset adjustments in signal conditioning circuits
• Programmable filters with bandwidth up to 1.5 MHz

Procurement Notes

Verify the specific resistance value suffix (e.g., BRJZ5 indicates 5 kΩ) against design requirements. Confirm that the application supports the OTP programming process, as the setting cannot be changed after fuse activation. Ensure the system provides the required 4.75 V to 5.25 V supply during the programming phase if the operating voltage is lower.

Selection Notes

Select this component when non-volatile resistance storage is needed without the cost of EEPROM. The 6-bit resolution provides 64 tap positions. Consider the ±30% absolute tolerance for rheostat mode applications, whereas potentiometer mode offers better ratiometric accuracy with a 5 ppm/°C temperature coefficient. Verify I2C address compatibility using the AD0 pin.