EMCT03 Datasheet, PDF (1/3 Pages) SMSC Corporation – 1C TRIPLE SMBUS TEMPERATURE SENSOR

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.
Applications
■ Desktop and Notebook Computers
■ Thermostats
■ Smart batteries
■ Industrial / Automotive
Features
■ Low Power; 3.0V to 3.6V Supply
— Programmable conversion rate
— < 1mA at 16 Conversions per Second
— < 3uA in Standy Mode
■ SMBus 2.0 Compliant interface
■ Two External Temperature Monitors:
— Range -64°C to +191°C
— 0.125°C resolution
— ±1°C Accuracy 40°C to 80°C
— Diode Fault Reporting
■ Internal Temperature Monitor
— Range 0°C to +85°C
— 0.125°C resolution
— ±3°C Accuracy 0°C to 85°C
■ Programmable Conversion Rate
■ MSOP-8 3x3mm Package
Simplified Block Diagram
DP1
DN1
Switching
Current
DP2
DN2
Local Temp
Diode
EMCT03
11-bit
Sigma Delta
ADC
Remote Temp
Register 1
Remote Temp
Register 2
Local Temp
Register
Configuration
Register
Digital Mux
and
Byte Interlock
Status Register
SMCLK
SMDATA
SMSC EMCT03
PRODUCT PREVIEW
Revision 2.1 (09-03-04)