EMC1023
1°C Triple Temperature
Sensor with Resistance
Error Correction
Datasheet
General Description
The EMC1023 is a System Management Bus (SMBus)
temperature sensor that is capable of monitoring three
temperature zones. Four unique part numbers can be
ordered, each with a different SMBus Address. The
three temperature zones consist of two external diodes
and one internal monitor.
Extended features include resistance error correction
and ideality factor configuration eliminating both major
sources of temperature measurement error.
1
The 11-bit
delta-sigma temperature-to-digital converter provides
superb linearity, excellent noise immunity and
repeatable temperature readings. An extended
temperature format may be selected for compatibility
with a broad range of CPUs. Selectable conversion
rates and standby mode support low-power operation.
Features
Resistance Error Correction
Ideality Factor Configuration
Accepts 2200pF cap for noise suppression
Remote Thermal Zones
—
±1°C
Accuracy (40°C to 80°C)
— 0.125°C resolution
Internal Thermal Zone
—
±3°C
Accuracy (0°C to 85°C)
— 0.125°C resolution
Low Power; 3.0V to 3.6V Supply
Four Unique SMBus Addresses Available
Programmable Conversion Rate
MSOP-8 3x3mm Lead-Free RoHS Compliant
Package
Applications
Desktop and Notebook Computers
Thermostats
Smart batteries
Industrial/Automotive
1.Patents pending
Simplified Block Diagram
EMC1023
Switching
Current
Remote Temp
Register 1
SMBus Interface
Analog Mux
Configuration
Register
DP1
DN1
DP2
DN2
Local Temp
Diode
11-bit
delta-sigma
ADC
Remote Temp
Register 2
Digital Mux
and
Byte Interlock
Local Temp
Register
Status Register
SMCLK
SMDATA
SMSC EMC1023
DATASHEET
Revision 1.2 (02-05-07)
SMSC [ SMSC CORPORATION ]
