OVERVIEW

The S9518 DACPOT trimmer is an 8-bit nonvolatile DAC designed to replace mechanical potentiometers. The S9518 includes a unity-gain amplifier to buffer the DAC output and enables VOUTto swing from rail to rail. The DACPOT trimmer operates over a supply voltage range of 2.7V to 5.5V.

FEATURES

Digitally Controlled Electronic Potentiometer

• 8-Bit Digital-to-Analog Converter (DAC)

– Independent Reference Inputs

– Differential Non-Linearity of ±0.5LSB max

– Integral Non-Linearity of ±1LSB max

•VOUTValue in EEPROM for Power-On Recall

– Equivalent to 256-Step Potentiometer

• Unity Gain Op Amp Drives up to 1mA

• Simple Trimming Adjustment

– Debounced Pushbutton Interface

• Low Noise Operation

• “Clickless” Transitions between DAC Steps

• No Mechanical Wear-out Problem

– 1,000,000 Stores (typical)

– 100 Year Data Retention

• Operation from 2.7V to 5.5V Supply

• Low Power: 1mW max at 5V