GENERAL DESCRIPTION

The AD5273 is a 64-position, One-Time-Programmable (OTP) digital potentiometer4 that employs fuse link technology to achieve the permanent program setting. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. It allows unlimited adjustments before permanently setting the resistance values. The AD5273 is programmed using a 2-wire, I2C compatible digital control. During the write mode, a fuse blow command is executed after the final value is determined, therefore freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer).

FEATURES

64 Positions

OTP (One-Time-Programmable)1 Set-and-Forget

Resistance Setting

1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ End-to-End Terminal Resistance

Compact Standard SOT23-8 Package

Ultralow Power: IDD = 5 μA Max

Fast Settling Time: tS = 5 μs Typ in Power-Up

I2C Compatible Digital Interface

Computer Software2 Replaces μC in Factory Programming

Applications

Wide Temperature Range: –40°C to +105°C

5 V Programming Voltage

Low Operating Voltage, 2.7 V to 5.5 V

OTP Validation Check Function

APPLICATIONS

Systems Calibrations

Electronics Level Settings

Mechanical Trimmers? Replacement in New Designs

Automotive Electronics Adjustments

Transducer Circuits Adjustments

Programmable Filters up to 6 MHz BW3