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參數資料
| 型號： | ADT7460 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | dB COOL?? Remote Thermal Controller and Fan Controller |
| 中文描述： | 分貝很酷吧？？遠程熱控制器和風扇控制器 |
| 文件頁數： | 18/48頁 |
| 文件大小： | 695K |
| 代理商： | ADT7460 |
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REV. 0
–18–
ADT7460
INT
LOW LIMIT
TEMP =
LOW LIMIT
Figure 18. Temperature = Low Limit:
INT
Occurs
NO
INT
HIGH LIMIT
TEMP =
HIGH LIMIT
Figure 19. Temperature = High Limit: No
INT
HIGH LIMIT
INT
TEMP >
HIGH LIMIT
Figure 20. Temperature > High Limit:
INT
Occurs
Analog Monitoring Cycle Time
The analog monitoring cycle begins when a 1 is written to the
Start bit (Bit 0) of Configuration Register 1 (Reg 0x40). The ADC
measures each analog input in turn and as each measurement
is
completed, the result is automatically stored in the
appropri-
ate value register. This round-robin monitoring cycle continues
unless disabled by writing a 0 to Bit 0 of Configuration Register 1.
As the ADC will normally be left to free-run in this manner, the
time taken to monitor all the analog inputs will normally not be
of interest, as the most recently measured value of any input can
be read out at any time.
For applications where the monitoring cycle time is important,
it can easily be calculated.
The total number of channels measured is:
Two supply voltage inputs (2.5 V and V
CC
)
Local temperature
Two remote temperatures
As mentioned previously, the ADC performs round-robin con-
versions and takes 11.38 ms for each voltage measurement,
12 ms for a local temperature reading, and 25.5 ms for each
remote temperature reading.
The total monitoring cycle time for averaged voltage and tem-
perature monitoring is therefore nominally:
(2 11.38) + 12 + (2 25.5) = 85.76 ms
The round robin starts again 35 ms later. Therefore all channels
are measured approximately every 120 ms
.
Fan TACH measurements are made in parallel and are not
synchronized with the analog measurements in any way.
Status Registers
The results of limit comparisons are stored in Status Registers 1
and 2. The Status Register bit for each channel reflects the status
of the last measurement and limit comparison on that channel. If
a measurement is within limits, the corresponding status register
bit will be cleared to 0. If the measurement is out-of-limits, the
corresponding status register bit will be set to 1.
The state of the various measurement channels may be polled by
reading the Status Registers over the serial bus. In Bit 7 (OOL)
of Status Register 1 (Reg. 0x41), 1 means that an out-of-limit
event has been flagged in Status Register 2. This means that you
need only read Status Register 2 when this bit is set. Alterna-
tively, Pin 5 or Pin 14 can be configured as an
SMBALERT
output. This will automatically notify the system supervisor of an
out-of-limit condition. Reading the Status registers clears the
appropriate status bit as long as the error condition that caused
the interrupt has cleared. Status Register bits are “sticky.” When-
ever a Status bit gets set, indicating an out-of-limit condition, it
will remain set even if the event that caused it has gone away
(until read). The only way to clear the status bit is to read the
Status Register after the event has gone away. Interrupt Status
Mask Registers (Reg. 0x74, 0x75) allow individual interrupt
sources to be masked from causing an
SMBALERT
. However,
if one of these masked interrupt sources goes out-of-limit, its
associated status bit will get set in the Interrupt Status Registers.
相關PDF資料 |
PDF描述 |
|---|---|
| ADT7460ARQ | dB COOL?? Remote Thermal Controller and Fan Controller |
| ADT7461 | 【1∑C Temperature Monitor with Series Resistance Cancellation |
| ADT7461AR | 【1∑C Temperature Monitor with Series Resistance Cancellation |
| ADT7461AR-REEL | 【1∑C Temperature Monitor with Series Resistance Cancellation |
| ADT7461AR-REEL7 | 【1∑C Temperature Monitor with Series Resistance Cancellation |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADT7460ARQ | 功能描述:IC REMOTE THRML/FAN CTRLR 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標準包裝:1 系列:- 功能:溫度監控系統（傳感器） 傳感器類型:內部和外部 感應溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠程（最大值） 拓撲:ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| ADT7460ARQ-REEL | 功能描述:IC SENSOR TEMP FAN-CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標準包裝:1 系列:- 功能:溫度監控系統（傳感器） 傳感器類型:內部和外部 感應溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠程（最大值） 拓撲:ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| ADT7460ARQ-REEL7 | 功能描述:IC SENSOR TEMP FAN-CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標準包裝:1 系列:- 功能:溫度監控系統（傳感器） 傳感器類型:內部和外部 感應溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠程（最大值） 拓撲:ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| ADT7460ARQZ | 功能描述:馬達/運動/點火控制器和驅動器 THERMAL MGMT CNTRLR IC RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| ADT7460ARQZ-R7 | 制造商:ON Semiconductor 功能描述:Temp Sensor Digital Serial (3-Wire) 16-Pin QSOP T/R |
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