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SMD1103

Summit Microelectronics
Part Number SMD1103
Manufacturer Summit Microelectronics
Description (SMD1102 - SMD1113) 10-Bit Data Acquisition System
Published Dec 14, 2006
Detailed Description www.DataSheet4U.com SUMMIT MICROELECTRONICS, Inc. SMD1102 / 1103 / 1113 Preliminary 10-Bit Data Acquisition System fo...
Datasheet PDF File SMD1103 PDF File

SMD1103
SMD1103

Overview
www.
DataSheet4U.
com SUMMIT MICROELECTRONICS, Inc.
SMD1102 / 1103 / 1113 Preliminary 10-Bit Data Acquisition System for Autonomous Environmental Monitoring FEATURES ! Complete Data Acquisition System " 10-Bit A/D Converter Resolution " 75µs Acquisition plus Conversion Time " Alarm Limits for Each Input Channel " Auto-Increment of Input Channels " Two Wire I2C Serial Data Interface " System Management Bus (SMBus) Compatible " Auto-Monitor with SMBALERT Output " Low Quiescent Current of 50µA " Wide Supply Voltage Range: 2.
7V to 5.
5V ! SMD1102 " 2-Channel Analog Input " External Voltage Reference Input Provided for Absolute Measurements ! SMD1103 " 3-Channel Analog Input " Reference Voltage Input for the A/D Converter is Connected to VDD for Ratiometric Measurements ! SMD1113 " Extended I2C Operation " 3-Channel Analog Input " External Voltage Reference Input Provided for Absolute Measurements FUNCTIONAL BLOCK DIAGRAM VDD (1102, 1113) REFIN X (1103, A 2 IN 1113) AIN1 AIN0 X ANALOG MULTIPLEXER SAMPLE AND HOLD SMBALERT# CONTROL LOGIC 10-BIT A/D CONVERTER CONVERTER CLOCK Note: See Pin Configuration drawings for pinouts (1113) CE# E2PROM ALARM LIMIT REGISTERS 2-WIRE SERIAL INTERFACE SCL SDA (1113) A2 (1113) A1 (1113) A0 GND 2033 BD 7.
0 ©SUMMIT MICROELECTRONICS, Inc.
, 2001 • 300 Orchard City Dr.
, Suite 131 • Campbell, CA 95008 • Phone 408-378-6461 • FAX 408-378-6586 • www.
summitmicro.
com Characteristics subject to change without notice 2033 8.
1 10/04/01 1 SMD1102 / 1103 / 1113 INTRODUCTION The SMD1102, SMD1103 and SMD1113 each contain a 10-Bit data acquisition system (DAS) with dedicated EEPROM alarm limit storage.
The three devices communicate with the host µP via a standard two-wire I2C serial interface.
After initialization the SMD1102/1103/1113 can automatically monitor one or more analog input channels.
If any input signal moves beyond its user-programmed limits the host is notified by the SMBALERT# output, enabling fault prediction in telecom line c...


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