General Description

The DS3503 features two synchronized stepping digital potentiometers: one 7-bit potentiometer with RW as its output, and another potentiometer with Y as its output. Both potentiometers reference the RH and RL terminals and feature an output voltage range of up to 15.5V. In addition, both potentiometer outputs can be stepped up and down by configuring the control registers. Programming is accomplished by an I2C-compatible interface that can operate at speeds of up to 400kHz.

Features

♦ 128 Wiper Tap Points

♦ Full-Scale Resistance: 5kΩ

♦ Programmable Logic Lets WR Step Up and Down

   with Timing Controlled by SYNC Input

♦ Second Potentiometer Output Pin (Y) Centered at

   Position 40h

♦ I2C-Compatible Serial Interface

♦ Digital Operating Voltage: 2.7V to 3.6V

♦ Analog Operating Voltage: 4.5V to 15.5V

♦ Operating Temperature: -40°C to +100°C

♦ 10-Pin µSOP Package

Applications

   TFT-LCD VCOM Calibration

   Instrumentation and Industrial Controls

   Mechanical Potentiometer Replacement