OVERVIEW

The SMP9317 DACPOT™ trimmer is a 7-bit nonvolatile DAC designed to replace mechanical potentiometers. The SMP9317 includes a unity-gain amplifier to buffer the DAC output and enables VOUT to 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

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

– Independent Reference Inputs

– Differential Non-Linearity - +0.5LSB

– Integral Non-Linearity - +1LSB

• VOUT Value in EEPROM for Power-On Recall

– Equivalent to 128-Step Potentiometer

• Unity Gain Op Amp Drives ±100µA

• Simple Trimming Adjustment

– Up/Down Counter Style Operation

• Low Noise Operation

• “Clickless” Transitions between DAC Steps

• No Mechanical Wearout Problem

– 1,000,000 Stores (typical)

– 100 Year Data Retention

• Operation from +2.7V to +5.5V Supply

• Ultra-Low Power, 0.5mW max at +5V