(SMD1102 - SMD1113) 10-Bit Data Acquisition System
www.DataSheet4U.com
SUMMIT
MICROELECTRONICS, Inc.
SMD1102 / 1103 / 1113
Preliminary
10-Bit Data Acquisition System fo...
Description
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 /...
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