SMD1103P データシートの表示（PDF） - Summit Microelectronics

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SMD1103P

10-Bit Data Acquisition System for Autonomous Environmental Monitoring

Summit Microelectronics 

SUMMIT

MICROELECTRONICS, Inc.

SMD1102 / 1103 / 1113

10-Bit Data Acquisition System for

Autonomous Environmental Monitoring

Preliminary

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) Compat-

ible

" 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 Measure-

ments

! SMD1113

" Extended I2C Operation

" 3-Channel Analog Input

" External Voltage Reference Input Provided

for Absolute Measurements

FUNCTIONAL BLOCK DIAGRAM

VDD

(1103,

1113)

AIN2

X

AIN1

AIN0

ANALOG

MULTIPLEXER

SAMPLE

AND

HOLD

(1102,

1113)

REFIN

X

SMBALERT#

(1113) CE#

SCL

SDA

(1113) A2

(1113) A1

(1113) A0

CONTROL

LOGIC

2-WIRE

SERIAL

INTERFACE

10-BIT A/D

CONVERTER

E2PROM

ALARM LIMIT

REGISTERS

GND

CONVERTER

CLOCK

Note: See Pin

Configuration

drawings for

pinouts

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

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