GENERAL OVERVIEW
The AD5170 is a 256-position, two-time programmable (TTP) digital potentiometer1 that employs fuse link technology to enable two opportunities at permanently programming the 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.

FEATURES
    256-position
    TTP (two-time programmable) set-and-forget resistance
        setting allows second-chance permanent programming
    Unlimited adjustments prior to OTP (one-time
        programming) 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
    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 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