GENERAL DESCRIPTION
The AD5273 is a 64-position, one-time programmable (OTP) digital potentiometer4 that employs fuse link technology to achieve permanent program setting. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. It allows unlimited adjustments before permanently setting the resistance values. The AD5273 is programmed using a 2-wire, I2C-compatible digital control. During write mode, a fuse blow command is executed after the final value is determined, thereby freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer).

FEATURES
    64 positions
    One-time programmable (OTP)1 set-and-forget
        Resistance setting—low cost alternative over EEMEM
        Unlimited adjustments prior to OTP activation
    1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ end-to-end terminal resistance
    Compact 8-lead SOT-23 standard package
    Ultralow power: IDD = 5 µA maximum
    Fast settling time: tS = 5 µs typical during power-up
    I2C-compatible digital interface
    Computer software2 replaces microcontroller in
        factory programming applications
    Wide temperature range: −40°C to +105°C
    Low operating voltage: 2.7 V to 5.5 V
    OTP validation check function

APPLICATIONS
    System calibrations
    Electronics level settings
    Mechanical potentiometers and trimmer replacement
    Transducer circuit adjustments
    Programmable filters up to 6 MHz BW3