GENERAL OVERVIEW
The AD5172/AD5173 are dual channel, 256-position, one-time programmable (OTP) digital potentiometers1 that employ fuse link technology to achieve memory retention of resistance setting. OTP is a cost-effective alternative to EEMEM for users who do not need to program the digital potentiometer setting in memory more than once. This device performs the same electronic adjustment function as mechanical potentiometers or variable resistors with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.

FEATURES
    2-channel, 256-position
    OTP (one-time programmable) set-and-forget resistance
        setting, low cost alternative to EEMEM
    Unlimited adjustments prior to OTP activation
    OTP overwrite allows dynamic adjustments with user
        defined preset
    End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
    Compact MSOP-10 (3 mm × 4.9 mm) package
    Fast settling time: tS = 5 µs typ in power-up
    Full read/write of wiper register
    Power-on preset to midscale
    Extra package address decode pins AD0 and AD1 (AD5173)
    Single supply 2.7 V to 5.5 V
    Low temperature coefficient: 35 ppm/°C
    Low power, IDD = 6 µA max
    Wide operating temperature: –40°C to +125°C
    Evaluation board and software are available
    Software replaces µC in factory programming applications

APPLICATIONS
    Systems calibration
    Electronics level setting
    Mechanical Trimmers® replacement in new designs
    Permanent factory PCB setting
    Transducer adjustment of pressure, temperature, position,
        chemical, and optical sensors
    RF amplifier biasing
    Automotive electronics adjustment
    Gain control and offset adjustment