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參數(shù)資料
| 型號： | EMC2103-2-AP-TR |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, QCC16 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, QFN-16 |
| 文件頁數(shù)： | 29/89頁 |
| 文件大小： | 1243K |
| 代理商： | EMC2103-2-AP-TR |
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RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2103
35
Revision 0.90 (08-19-08)
DATASHEET
3. Setting the LUT_LOCK bit will disable the Watchdog Timer. The fan driver will be set based on the
Look Up Table settings.
Writing any other configuration registers will not disable the Watchdog Timer.
APPLICATION NOTE: Disabling the Watchdog will not automatically set the fan drive. This must be done manually
(or via the Look Up Table).
5.10
Fault Queue
The EMC2103 contains a programmable fault queue on all fault conditions. The fault queue defines
how many consecutive out-of-limit conditions must be reported before the corresponding status bit is
set (and the ALERT pin asserted).
5.11
Temperature Monitoring
The EMC2103 can monitor the temperature of up to three (3) externally connected diodes as well as
the internal or ambient temperature. Each channel is configured with the following features enabled or
disabled based on user settings and system requirements.
5.11.1
Dynamic Averaging
The EMC2103 supports dynamic averaging. When enabled, this feature changes the conversion time
for all channels based on the selected conversion rate. This essentially increases the averaging factor
as shown in Table 5.4. The benefits of Dynamic Averaging are improved noise rejection due to the
longer integration time as well as less random variation on the temperature measurement.
5.11.2
Resistance Error Correction
The EMC2103 includes active Resistance Error Correction to remove the effect of up to 100 ohms of
series resistance. Without this automatic feature, voltage developed across the parasitic resistance in
the remote diode path causes the temperature to read higher than the true temperature is. The error
induced by parasitic resistance is approximately +0.7°C per ohm. Sources of parasitic resistance
include bulk resistance in the remote temperature transistor junctions, series resistance in the CPU,
and resistance in the printed circuit board traces and package leads. Resistance error correction in the
EMC2103 eliminates the need to characterize and compensate for parasitic resistance in the remote
diode path.
Table 5.4 Dynamic Averaging Behavior
CONVERSION RATE
AVERAGING FACTOR (RELATIVE TO 11-BIT CONVERSI0N)
DYNAMIC AVERAGING
ENABLED
DYNAMIC AVERAGING
DISABLED
1 / sec
8x
1x
2 / sec
4x
1x
4 / sec
2x
1x
Continuous
1x
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| EMC2103-3-KP | 制造商:SMSC 制造商全稱:SMSC 功能描述:RPM-Based Fan Controller with HW Thermal Shutdown |
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| EMC2103-4-AP-TR | 功能描述:板上安裝溫度傳感器 RPM-BASED FAN CTRL HW THRML SHUTDWN RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| EMC2104 | 制造商:SMSC 制造商全稱:SMSC 功能描述:Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown |
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