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SUMMIT S9518

MICROELECTRONICS, Inc.

Nonvolatile DACPOT™ Electronic PotentiometerWith Debounced Push Button Interface FEATURES OVERVIEW

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?V The S9518 DACPOT trimmer is an 8-bit nonvolatile DACdesigned to replace mechanical potentiometers. The S9518 includes a unity-gain amplifier to buffer the DAC output and enables V

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to swing from rail to rail. TheDACPOT trimmer operates over a supply voltage range of 2.7V to 5.5V.The S9518’s simple pushbutton input provides an idealinterface for operator adjusted equipment. This interface allows for quick and easy adjustment of even the most sophisticated systems.The S9518 is a pin-compatible performance upgrade forother industry nonvolatile potentiometers. The S9518 offers double the resolution of these devices and provides ‘clickless’ transitions of V

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Value 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

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FUNCTIONAL BLOCK DIAGRAM

8 3 VH 8-BitE2PROMVL Debounce Circuit& Write ControlLogic 8-Bit DataRegister 5 8-Bit DAC 6 1STR# 2 VOUT 7GND 4 UP# DWN# VDD
2017 T BD 5.0 © SUMMIT MICROELECTRONICS, Inc. 2000 • 300 Orchard City Drive, Suite 131 ? Campbell, CA 95008 ? Phone 408-378-6461 ? Fax 408-378-6586 ? www.summitmicro.com Characteristics subject to change without notice 2017 5.2 8/2/00

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