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參數(shù)資料
| 型號： | ADT7460ARQ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | dB COOL?? Remote Thermal Controller and Fan Controller |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | 0.025 INCH PITCH, MO-137AB, QSOP-16 |
| 文件頁數(shù)： | 21/48頁 |
| 文件大?。?/td> | 695K |
| 代理商： | ADT7460ARQ |
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REV. 0
ADT7460
–21–
7 6 5 4 3 2 1 0
22.76ms
45.52ms
THERM
91.04ms
182.08ms
364.16ms
728.32ms
1.457s
2.914s
IN
OUT
RESET
LATCH
STATUS REGISTER 2
CLEARED
ON READ
F4P BIT (BIT 5)
MASK REGISTER 2
(REG. 0x75)
1 = MASK
SMBALERT
F4P BIT (BIT 5)
THERM
TIMER CLEARED ON READ
COMPARATOR
THERM
TIMER
(REG. 0x79)
7
6
5
4
3
2
1
0
22.76ms
45.52ms
91.04ms
182.08ms
364.16ms
728.32ms
1.457s
2.914s
THERM
LIMIT
(REG. 0x7A)
Figure 26. Functional Diagram of ADT7460’s
THERM
Monitoring Circuitry
Configuring the Desired
THERM
Behavior
1. Configure the
THERM
input.
Setting Bit 1 (PHOT) of Configuration Register 3 (Reg. 0x78)
enables the
THERM
monitoring function.
2. Select the desired fan behavior for
THERM
events.
Setting
Bit
2 (BOOST bit) of Configuration Register 3
(Reg. 0x78) causes all fans to run at 100% duty cycle whenever
THERM
gets asserted. This allows fail-safe system cooling.
If this bit = 0, the fans will run at their current settings and
will not be affected by
THERM
events.
3. Select whether
THERM
events should generate
SMBALERT interrupts.
Bit 5 (F4P) of Mask Register 2 (Reg. 0x75), when set,
masks out
SMBALERT
s when the
THERM
limit value gets
exceeded. This bit should be cleared if
SMBALERT
s based
on
THERM
events are required.
4. Select a suitable
THERM
limit value.
This value determines whether an
SMBALERT
is generated
on the first
THERM
assertion, or only if a cumulative
THERM
assertion time limit is exceeded. A value of 0x00 causes an
SMBALERT
to be generated on the first
THERM
assertion.
5. Select a
THERM
monitoring time.
This is how often OS or BIOS level software checks the
THERM
timer. For example, BIOS could read the
THERM
timer once an hour to determine the cumulative
THERM
assertion time. If, for example, the total
THERM
assertion
time is <22.76 ms in Hour 1, >182.08 ms in Hour 2, and
>5.825 s in Hour 3, this can indicate that system perfor-
mance is degrading significantly since
THERM
is asserting
more frequently on an hourly basis.
Alternatively, OS or BIOS level software can time-stamp when
the system is powered on. If an
SMBALERT
is generated due
to the
THERM
limit being exceeded, another time-stamp can
be taken. The difference in time can be calculated for a fixed
THERM
Limit Register. This 8-bit register allows a limit from
0 seconds (first
THERM
assertion) to 5.825 seconds to be set
before an
SMBALERT
is generated. The
THERM
Timer value
is compared with the contents of the
THERM
Limit Register. If
the
THERM
Timer value exceeds the
THERM
Limit value,
then the F4P bit (Bit 5) of Status Register 2 gets set, and an
SMBALERT
is generated. Note that the F4P bit (Bit 5) of
Mask Register 2 (Reg. 0x75) will mask out
SMBALERT
s if this
bit is set to 1, although the F4P bit of Interrupt Status Register 2
will still get set if the
THERM
Limit is exceeded.
Figure 26 is a Functional Block Diagram of the
THERM
timer,
limit, and associated circuitry. Writing a value of 0x00 to the
THERM
Limit Register (Reg. 0x7A) causes
SMBALERT
to
be generated on the first
THERM
assertion. A
THERM
Limit
value of 0x01 generates an
SMBALERT
once cumulative
THERM
assertions exceed 45.52 ms.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)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(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風(fēng)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(yīng)商設(shè)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(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)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(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風(fēng)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(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| ADT7460ARQZ | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 THERMAL MGMT CNTRLR IC RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)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 |
| ADT7460ARQZ-REEL | 功能描述:板上安裝溫度傳感器 THERMAL MGMT CNTRLR IC RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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