|
|
PDF EMC1424 Data sheet ( Hoja de datos )
| Número de pieza | EMC1424 | |
| Descripción | (EMC1423 / EMC1424) Temperature Sensor | |
| Fabricantes | SMSC Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EMC1424 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
EMC1423/EMC1424
1°C Temperature Sensor with
Hardware Thermal Shutdown
PRODUCT FEATURES
Datasheet
General Description
The EMC1423 and EMC1424 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.
Additionally, the EMC1423 and EMC1424 provide a
hardware programmable system shutdown feature that
is programmed at part power-up via two pull-up resistor
values and that cannot be masked or corrupted through
the SMBus.
Each device provides ±1° accuracy for external diode
temperatures and ±2°C accuracy for the internal diode
temperature. The EMC1423 monitors three temperature
channels (two external and one internal). The EMC1424
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
Hardware Thermal Shutdown
— triggers dedicated SYS_SHDN pin
— hardware configured range 77°C to 112°C in 1°C steps
— cannot be disabled or modified by software
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
— Supports up to 2.2nF diode filter capacitor
— Anti-parallel diodes for extra diode support
Internal Temperature Monitor
— ±2°C accuracy
3.3V Supply Voltage
Programmable temperature limits for ALERT
Available in Small 10-pin MSOP Lead-free RoHS
Compliant Package
SMSC EMC1423/EMC1424
DATASHEET
Revision 2.0 (08-10-12)
1 page  
1°C Temperature Sensor with Hardware Thermal Shutdown
Datasheet
List of Figures
Figure 1.1
Figure 2.1
Figure 4.1
Figure 5.1
Figure 5.2
Figure 5.3
Figure 5.4
Figure 5.5
Figure 5.6
Figure 5.7
Figure 5.8
Figure 8.1
EMC1423/EMC1424 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
EMC1423/EMC1424 Pin Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SMBus Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
System Diagram for EMC1423 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
System Diagram for EMC1424 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Block Diagram of Hardware Thermal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Isolating ALERT and SYS_SHDN Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Temperature Filter Step Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Temperature Filter Impulse Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Block Diagram of Temperature Monitoring Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Diode Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10-Pin MSOP / TSSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
SMSC EMC1423/EMC1424
5
DATASHEET
Revision 2.0 (08-10-12)
5 Page 
1°C Temperature Sensor with Hardware Thermal Shutdown
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)
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
2000
UNIT
V
V
V
V
°C
°C
°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, SYS_SHDN, and
ALERT), the pull-up voltage must not exceed 3.6V when the device is unpowered.
SMSC EMC1423/EMC1424
11
DATASHEET
Revision 2.0 (08-10-12)
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EMC1424.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EMC1422 | Temperature Sensor | SMSC Corporation |
| EMC1423 | (EMC1423 / EMC1424) Temperature Sensor | SMSC Corporation |
| EMC1424 | (EMC1423 / EMC1424) Temperature Sensor | SMSC Corporation |
| EMC1428 | Multiple Temperature Sensor | SMSC Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |