SUMMIT Microelectronics: Product Guide: S9518 Product Summary 

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S9518 BLOCK DIAGRAM 8-Pin SOIC S9518 PINOUT

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S9518 Nonvolatile DACPOT™ Electronic Potentiometer With Debounced Push Button Interface FEATURES Digitally Controlled Electronic Potentiometer 8-bit Digital-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 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 Wearout Problem - 1,000,000 stores (typical) - 100 year data retention Operates from a 2.7V to 5.5V supply Operation from 1mW max at 5V

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 VOUT to swing from rail to rail. The DACPOT trimmer operates over a supply voltage range of 2.7V to 5.5V. The S9518's simple push button input provides an ideal interface 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 for other industry nonvolatile potentiometers. The S9518 offers double the resolution of these devices and provides 'clickless' transitions of VOUT.

SUMMIT Microelectronics, Inc. reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. SUMMIT Microelectronics, Inc. assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained herein reflect representative operating parameters, and may vary depending upon a user's specific application. While the information in this publication has been carefully checked, SUMMIT Microelectronics, Inc. shall not be liable for any damages arising as a result of any error or omission. SUMMIT Microelectronics, Inc. does not recommend the use of any of its products in life support or aviation applications where the failure or malfunction of the product can reasonably be expected to cause any failure of either system or to significantly affect their safety or effectiveness. Products are not authorized for use in such applications unless SUMMIT Microelectronics, Inc. receives written assurances, to its satisfaction, that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; and (c) potential liability of SUMMIT Microelectronics, Inc. is adequately protected under the circumstances. Revision 5.2 - This document supersedes all previous versions. Please check the Summit Microelectronics, Inc. web site at www.summitmicro.com for data sheet updates. "DACPOT" is a registered trademark of Summit Microelectronics, Inc.