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