GENERAL DESCRIPTION
The AD5171 is a 64-position, one-time programmable (OTP) digital potentiometer2, which employs fuse link technology to achieve the memory retention of resistance setting function. OTP is a cost-effective alternative over the EEMEM approach for users who do not need to reprogram new memory setting in the digital potentiometer. This device performs the same electronic adjustment function like most mechanical trimmers and variable resistors do. The AD5171 is programmed using a 2-wire I2C compatible digital control. It allows unlimited adjustments before permanently setting the resistance value.

FEATURES
    64 positions
    OTP (one-time programmable)1 set-and-forget resistance setting—low cost alternative over EEMEM
    Unlimited adjustments prior to OTP activation
    5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ end-to-end resistance
    Low tempco 5 ppm/oC in potentiometer mode
    Low tempco 35 ppm/°C in rheostat mode
    Compact standard SOT-23-8 package
    Low power, IDD = 8 µA max
    Fast settling time, ts = 5 µs typ in power-up
    I2C compatible digital interface
    Computer software replaces µc in factory programming applications
    Full read/write of wiper register
    Extra I2C device address pin
    Power-on preset to midscale
    6 V one-time programming voltage
    Low operating voltage, 2.7 V to 5.5 V
    OTP validation check function
    Automotive temperature range −40°C to +125°C

APPLICATIONS
    Systems calibrations
    Electronics level settings
    Mechanical potentiometers and trimmers® replacements
    Automotive electronics adjustments
    Gain control and offset adjustments
    Transducer circuits adjustments
    Programmable filters up to 1.5 MHz BW