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PDF EMC1403 Data sheet ( Hoja de datos )
| Número de pieza | EMC1403 | |
| Descripción | (EMC1403 / EMC1404) Temperature Sensor | |
| Fabricantes | SMSC Corporation | |
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EMC1403/EMC1404
1°C Temperature Sensor with
Beta Compensation
PRODUCT FEATURES
Datasheet
General Description
The EMC1403 and EMC1404 are high accuracy, low
cost, System Management Bus (SMBus) temperature
sensors. Advanced features such as Resistance Error
Correction (REC), Beta Compensation (to support CPU
diodes requiring the BJT/transistor model including
45nm, 65nm and 90nm processors) and automatic
diode type detection combine to provide a robust
solution for complex environmental monitoring
applications.
Each device provides ±1° accuracy for external diode
temperatures and ±2°C accuracy for the internal diode
temperature. The EMC1403 monitors three temperature
channels (two external and one internal). The EMC1404
monitors four temperature channels (three external and
one internal).
Resistance Error Correction automatically eliminates the
temperature error caused by series resistance allowing
greater flexibility in routing thermal diodes. Beta
Compensation eliminates temperature errors caused by
low, variable beta transistors common in today's fine
geometry processors. The automatic beta detection
feature monitors each external diode/transistor and
determines the optimum sensor settings for accurate
temperature measurements regardless of processor
technology. This frees the user from providing unique
sensor configurations for each temperature monitoring
application. These advanced features plus ±1°C
measurement accuracy provide a low-cost, highly
flexible and accurate solution for critical temperature
monitoring applications.
Applications
Notebook Computers
Desktop Computers
Industrial
Embedded applications
Features
Support for diodes requiring the BJT/transistor model
— supports 45nm, 65nm, and 90nm CPU thermal diodes.
Automatically determines external diode type and
optimal settings
Resistance Error Correction
External Temperature Monitors
— ±1°C Accuracy (60°C < TDIODE < 100°C)
— 0.125°C Resolution
— Anti-parallel diodes for extra diode support
Internal Temperature Monitor
— ±2°C accuracy
3.3V Supply Voltage
Programmable temperature limits for ALERT and
THERM
Available in these Lead-free RoHS Compliant
Packages
— 10-pin 3mm x 3mm DFN
— 10-pin MSOP
— 14-pin SOIC
SMSC EMC1403/EMC1404
DATASHEET
Revision 2.0 (08-10-12)
1 page  
1°C Temperature Sensor with Beta Compensation
Datasheet
List of Figures
Figure 1.1
Figure 2.1
Figure 2.2
Figure 2.3
Figure 4.1
Figure 5.1
Figure 5.2
Figure 5.3
Figure 5.4
Figure 5.5
Figure 5.6
Figure 8.1
Figure 8.2
Figure 8.3
Figure 8.4
Figure 8.5
Figure 8.6
EMC1403/EMC1404 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
EMC1403/EMC1404 Pin Diagram, MSOP-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EMC1403/EMC1404 Pin Diagram, DFN-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EMC1403/EMC1404 Pin Diagram, SOIC-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SMBus Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
System Diagram for EMC1403 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
System Diagram for EMC1404 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Temperature Filter Step Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Temperature Filter Impulse Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Block Diagram of Temperature Monitoring Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Diode Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10-Pin MSOP / TSSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
10-Pin DFN Package Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10-Pin DFN Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10 Pin DFN PCB Footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Package Drawing and PCB Footprint for SOIC-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Package Dimensions for SOIC-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
SMSC EMC1403/EMC1404
5
DATASHEET
Revision 2.0 (08-10-12)
5 Page 
1°C Temperature Sensor with Beta Compensation
Datasheet
Chapter 3 Electrical Specifications
3.1 Absolute Maximum Ratings
Table 3.1 Absolute Maximum Ratings
DESCRIPTION
RATING
Supply Voltage (VDD)
Voltage on 5V tolerant pins (V5VT_pin)
Voltage on 5V tolerant pins (|V5VT_pin - VDD|) (see Note 3.1)
Voltage on any other pin to Ground
Operating Temperature Range
Storage Temperature Range
Lead Temperature Range
Package Thermal Characteristics for MSOP-10
Thermal Resistance (θj-a)
Package Thermal Characteristics for SOIC-14
Thermal Resistance (θj-a)
Package Thermal Characteristics for DFN-10
Thermal Resistance (θj-a)
ESD Rating, All pins HBM
-0.3 to 4.0
-0.3 to 5.5
-0.3 to 3.6
-0.3 to VDD +0.3
-40 to +125
-55 to +150
Refer to JEDEC Spec. J-STD-020
132.2
77.7
77.1
2000
UNIT
V
V
V
V
°C
°C
°C/W
°C/W
°C/W
V
Note:
Stresses at or above those listed could cause permanent damage to the device. This is a stress
rating only and functional operation of the device at any other condition above those indicated
in the operation sections of this specification is not implied. When powering this device from
laboratory or system power supplies, it is important that the Absolute Maximum Ratings not be
exceeded or device failure can result. Some power supplies exhibit voltage spikes on their
outputs when the AC power is switched on or off. In addition, voltage transients on the AC
power line may appear on the DC output. If this possibility exists, it is suggested that a clamp
circuit be used.
Note 3.1 For the 5V tolerant pins that have a pull-up resistor (SMCLK, SMDATA, THERM, and
ALERT), the pull-up voltage must not exceed 3.6V when the device is unpowered.
SMSC EMC1403/EMC1404
11
DATASHEET
Revision 2.0 (08-10-12)
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EMC1403.PDF ] | |
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