GENERAL DESCRIPTION
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 settings. 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. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistors but with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.

FEATURES
    2-channel, 256-position potentiometers
    One-time programmable (OTP) set-and-forget resistance
        setting provides a 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, and 100 kΩ
    Compact 10-lead MSOP: 3 mm × 4.9 mm
    Fast settling time: tS = 5 μs typical on 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 maximum
    Wide operating temperature: −40°C to +125°C

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