|
|
PDF EMC1187 Data sheet ( Hoja de datos )
| Número de pieza | EMC1187 | |
| Descripción | Triple Channel Temperature Sensor | |
| Fabricantes | SMSC | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EMC1187 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
EMC1187
Triple Channel 1°C Temperature Sensor with Hardware
Thermal Shutdown and 1.8V SMBus Communications
PRODUCT FEATURES
General Description
The EMC1187 is a high accuracy, low cost, 1.8V System
Management Bus (SMBus) compatible temperature sensor.
Advanced features such as Resistance Error Correction (REC),
Beta Compensation (to support CPU diodes requiring the
BJT/transistor model including 65nm and lower geometry
processors) and automatic diode type detection combine to
provide a robust solution for complex environmental monitoring
applications. The ability to communicate at 1.8V SMBus levels
provides compatible I/O for the advanced processors found in
today’s tablet and smartphone applications.
The EMC1187 monitors three temperature channels (two
external and one internal), providing ±1°C accuracy for both
external and internal diode temperatures.
Additionally, the EMC1187provides 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.
REC automatically eliminates the temperature error caused by
series resistance allowing greater flexibility in routing thermal
diodes. Frequency hopping* and analog filters ensure remote
diode traces can be as far as eight (8) inches without degrading
the signal. Beta Compensation eliminates temperature errors
caused by low, variable beta transistors common in today's fine
geometry processors. The automatic beta detection feature
monitors the 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.
Datasheet
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 65nm and lower geometry CPU thermal
diodes
Pin and register compatible with EMC1423
Automatically determines external diode type and
optimal settings
Resistance Error Correction
Frequency hops the remote sample frequency to reject
DC converter and other coherent noise sources*
Consecutive Alert queue to further reduce false Alerts
Up to 2 External Temperature Monitor
— 25°C typ, ±1°C max accuracy (20°C < TDIODE < 110°C)
— 0.125°C resolution
— Supports up to 2.2nF diode filter capacitor
Internal Temperature Monitor
— ±1°C accuracy
— 0.125°C resolution
3.3V Supply Voltage
1.8V SMBus operation
Programmable temperature limits for ALERT (85°C
default high limit and 0°C default low limit)
Available in small 10-pin 3mm x 3mm DFN RoHS
compliant package
Switching
Current
EMC1187
VDD
DP1
DN1
DP2
DN2
Analog
Mux
ΔΣ ADC
External
Temperature
Register(s)
Internal
Temperature
Register
Internal
Temp Diode
Status Registers
GND
* Technology covered under the US patent 7,193,543.
SMSC EMC1187
SYS_SHDN Limit
Conversion Rate Register
Low Limit Registers
High Limit Registers
CPU
Thermal
diode
Configuration Register
Interupt Masking
SMCLK
SMDATA
ALERT
SYS_SHDN
DATASHEET
VDD = 3.3V 1.8V – 3.3V
VDD
EMC1187
DP1
DN1
Internal
Diode
SMCLK
SMDATA
ALERT
Host
SMBus
Interface
DP2
DN2
SYS_SHDN
Power
Control
Revision 1.0 (07-11-13)
1 page  
Triple Channel 1°C Temperature Sensor with Hardware Thermal Shutdown and 1.8V SMBus Communications
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 8.1
Figure 8.2
Figure 8.3
Figure 8.4
EMC1187 Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
EMC1187 Pin Diagram DFN-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SMBus Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
System Diagram for EMC1187 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Block Diagram of Hardware Thermal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Isolating ALERT and SYS_SHDN Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Temperature Filter Step Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Temperature Filter Impulse Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10-Pin DFN Package Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10-Pin DFN Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
10 Pin DFN PCB Footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
EMC1187-1 10-Pin DFN Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
SMSC EMC1187
5
DATASHEET
Revision 1.0 (07-11-13)
5 Page 
Triple Channel 1°C Temperature Sensor with Hardware Thermal Shutdown and 1.8V SMBus Communications
Datasheet
Table 3.2 Electrical Specifications (continued)
VDD = 3.0V to 3.6V, TA = -40°C to 125°C, all typical values at TA = 27°C unless otherwise noted.
CHARACTERISTIC SYMBOL MIN TYP MAX UNITS
CONDITIONS
1120
µA
Temperature Accuracy
Temperature Resolution
Temperature Accuracy
Internal Temperature Monitor
±0.25 ±1
°C
±2 °C
0.125
°C
External Temperature Monitor
±0.25 ±1
°C
Temperature Resolution
Capacitive Filter
CFILTER
Output Low Voltage
Leakage Current
VOL
ILEAK
±0.5 ±2
°C
0.125
°C
2.2 2.7
nF
ALERT and SYS_SHDN pins
0.4 V
±5 µA
> 16 conversions / sec, dynamic
averaging enabled
-5°C < TA < 100°C
-40°C < TA < 125°C
+20°C < TDIODE < +110°C
0°C < TA < 100°C
-40°C < TDIODE < 127°C
Connected across external diode
ISINK = 8mA
ALERT and pins
Device powered or unpowered
TA < 85°C
pull-up voltage < 3.6V
3.3 SMBus Electrical Characteristics
Table 3.3 SMBus Electrical Specifications
VDD = 3.0 to 3.6V, TA = -40°C to 125°C, all typical values are at TA = 27°C unless otherwise noted.
CHARACTERISTIC
SYMBOL MIN TYP MAX UNITS
CONDITIONS
Input High Voltage
VIH
Input Low Voltage
VIL
Leakage Current
ILEAK
Hysteresis
Input Capacitance
Output Low Sink Current
CIN
IOL
SMBus Interface
1.4 VDD V
-0.3 0.8 V
±5 µA
50 mV
5 pF
8.2 15 mA
5V Tolerant. Voltage threshold
based on 1.8V operation
5V Tolerant. Voltage threshold
based on 1.8V operation
Powered or unpowered
TA < 85°C
SMDATA = 0.4V
SMSC EMC1187
11
DATASHEET
Revision 1.0 (07-11-13)
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EMC1187.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EMC1182 | Dual Channel 1C Temperature Sensor | SMSC |
| EMC1183 | Triple Channel Temperature Sensor | SMSC |
| EMC1184 | Quad Channel Temperature Sensor | SMSC |
| EMC1187 | Triple Channel Temperature Sensor | SMSC |
| 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 |