描述 Description

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 card applications, as an example.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

特性 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?