GENERAL DESCRIPTION
The AD5170 is a 256-position, two-time programmable, digital potentiometer1 that employs fuse link technology, giving users two opportunities to permanently program the resistance setting. For users who do not need to program the digital potentiometer setting in memory more than once, the OTP feature is a costeffective alternative to EEMEM.

FEATURES
    256-position digital potentiometer
    Two-time programmable (TTP) set-and-forget resistance
        setting allows second-chance permanent programming
    Unlimited adjustments prior to one-time programming
        (OTP) activation
    OTP overwrite allows dynamic adjustments with userdefined preset
    End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
    Compact 10-lead MSOP: 3 mm × 4.9 mm package
    Fast settling time: tS = 5 μs typical in power-up
    Full read/write of wiper register
    Power-on preset to midscale
    Extra package address decode pins: AD0 and AD1
    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
    Evaluation board and software are available
    Software replaces MicroConverter® in factory programming
        applications

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