EMCT03
1°C Triple SMBus
Temperature Sensor
Data Brief
General Description
The EMCT03 is a System Management Bus (SMBus)
temperature sensor that is capable of monitoring three
temperature zones for a PC or embedded environment.
The three temperature zones consist of two external and
one internal temperature diode. The internal 11 bit
sigma-delta ADC architecture with digital filtering
attributes to superb linearity and immunity to
interference and noise. An extended temperature format
may be selected for compatibility with a broad range of
CPUs. Selectable conversion rates and standy mode
support low-power operation.
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Features
Low Power; 3.0V to 3.6V Supply
— Programmable conversion rate
— < 1mA at 16 Conversions per Second
— < 3uA in Standy Mode
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SMBus 2.0 Compliant interface
Two External Temperature Monitors:
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Range -64°C to +191°C
0.125°C resolution
±1°C
Accuracy 40°C to 80°C
Diode Fault Reporting
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Internal Temperature Monitor
— Range 0°C to +85°C
— 0.125°C resolution
—
±3°C
Accuracy 0°C to 85°C
Applications
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Desktop and Notebook Computers
Thermostats
Smart batteries
Industrial / Automotive
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Programmable Conversion Rate
MSOP-8 3x3mm Package
Simplified Block Diagram
EMCT03
Switching
Current
Remote Temp
Register 1
SMBus Interface
Analog Mux
Configuration
Register
DP1
DN1
DP2
DN2
Local Temp
Diode
11-bit
Sigma Delta
ADC
Remote Temp
Register 2
Digital Mux
and
Byte Interlock
Local Temp
Register
Status Register
SMCLK
SMDATA
SMSC EMCT03
PRODUCT PREVIEW
Revision 2.1 (09-03-04)
SMSC [ SMSC CORPORATION ]
