- 您現(xiàn)在的位置：買賣IC網(wǎng) > Datasheet目錄39 > ADM1032ARZ-REEL (ON Semiconductor)IC TEMP MONITOR 85DEG 8SOIC Datasheet資料下載
參數(shù)資料
| 型號(hào)： | ADM1032ARZ-REEL |
| 廠商： | ON Semiconductor |
| 文件頁(yè)數(shù)： | 13/18頁(yè) |
| 文件大?。?/td> | 197K |
| 描述： | IC TEMP MONITOR 85DEG 8SOIC |
| 產(chǎn)品變化通告： | MFG CHG Notification ADI to ON Semi |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 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： | 0°C ~ 120°C |
| 精確度： | ±3°C |
| 拓?fù)洌?/td> | ADC，比較器，多路復(fù)用器，寄存器庫(kù) |
| 輸出類型： | 2 線 SMBus? |
| 輸出警報(bào)： | 是 |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 120°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOICN |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | ADM1032ARZ-REEL-ND ADM1032ARZ-REELOSTR |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)當(dāng)前第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)
ADM1032
http://onsemi.com
13
seven bits, an LSB of 1 is added. The address of
the device is now known, and it can be
interrogated in the usual way.
4. If more than one devices ALERT
output is low,
the one with the lowest device address has priority
in accordance with normal SMBus arbitration.
5. Once the ADM1032 has responded to the alert
response address, it resets its ALERT
output,
provided that the error condition that caused the
ALERT
no longer exists. If the SMBALERT
line
remains low, the master sends ARA again, and so
on until all devices whose ALERT
outputs were
low have responded.
Low Power Standby Mode
The ADM1032 can be put into a low power standby mode
by setting Bit 6 of the configuration register. When Bit 6 is
low, the ADM1032 operates normally. When Bit 6 is high,
the ADC is inhibited and any conversion in progress is
terminated without writing the result to the corresponding
value register.
The SMBus is still enabled. Power consumption in the
standby mode is reduced to less than 10 mA if there is no
SMBus activity, or 100 mA if there are clock and data signals
on the bus.
When the device is in standby mode, it is still possible to
initiate a one-shot conversion of both channels by writing
XXh to the one-shot register (Address 0Fh), after which the
device returns to standby. It is also possible to write new
values to the limit register while it is in standby. If the values
stored in the temperature value registers are now outside the
new limits, an ALERT
is generated even though the
ADM1032 is still in standby.
The ADM1032 Interrupt System
The ADM1032 has two interrupt outputs, ALERT
and
THERM
. These have different functions. ALERT
responds
to violations of software-programmed temperature limits
and is maskable. THERM
is intended as a fail-safe interrupt
output that cannot be masked.
If the temperature goes equal to or below the lower
temperature limit, the ALERT
pin is asserted low to indicate
an out-of-limit condition. If the temperature is within the
programmed low and high temperature limits, no interrupt
is generated.
If the temperature exceeds the high temperature limit, the
ALERT
pin is asserted low to indicate an overtemperature
condition. A local and remote THERM
limit can be
programmed into the device to set the temperature limit
above which the overtemperature THERM
pin is asserted
low. This temperature limit should be equal to or greater than
the high temperature limit programmed.
The behavior of the high limit and THERM
limit is as
follows:
1. If either temperature measured exceeds the high
temperature limit, the ALERT
output is asserted
low.
2. If the local or remote temperature continues to
increase and either one exceeds the THERM
limit,
the THERM
output asserts low. This can be used
to throttle the CPU clock or switch on a fan.
A THERM
hysteresis value is provided to prevent a
cooling fan cycling on and off. The power-on default value
is 10癈, but this can be reprogrammed to any value after
powerup. This hysteresis value applies to both the local and
remote channels.
Using these two limits in this way, allows the user to gain
maximum performance from the system by only slowing it
down should it be at a critical temperature.
The THERM
signal is open drain and requires a pullup to
V
DD
. The THERM
signal must always be pulled up to the
same power supply as the ADM1032, unlike the SMBus
signals (SDATA, SCLK, and ALERT
) that can be pulled to
a different power rail, usually that of the SMBus controller.
Figure 17. Operation of the THERM
Output
100癈
90癈
80癈
70癈
60癈
50癈
40癈
TEMPERATURE
THERM
LOCAL THERM
LIMIT
LOCAL THERM
LIMIT
HYSTERESIS
Table 13. THERM
HYSTERESIS SAMPLE VALUES
THERM
Hysteresis
Binary Representation
0癈
0 000 0000
1癈
0 000 0001
10癈
0 000 1010
Sensor Fault Detection
At the D+ input, the ADM1032 has a fault detector that
detects if the external sensor diode is open circuit. This is a
simple voltage comparator that trips if the voltage at D+
exceeds V
DD
1.0 V (typical). The output of this
comparator is checked when a conversion is initiated and
sets Bit 2 of the status register if a fault is detected.
If the remote sensor voltage falls below the normal
measuring range, for example, due to the diode being
short-circuited, the ADC outputs 128 (1000 0000). Since
the normal operating temperature range of the device only
extends down to 0癈, this output code should never be seen
in normal operation, so it can be interpreted as a fault
condition. Since it is outside the power-on default low
temperature limit (0癈) and any low limit that would
normally be programmed, a short-circuit sensor causes an
SMBus alert.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADM1033ARQZ-RL7 | IC THERM/FAN SPEED CTLR 16-QSOP |
| ADM1034ARQZ-REEL | IC THERM/FAN SPEED CTRLR 16-QSOP |
| ADN8810ACPZ-REEL7 | IC CURRENT SOURCE(12BIT) 24LFCSP |
| ADP2140ACPZ3328R7 | IC REG DL BCK/LINEAR 10LFCSP |
| ADP5022ACBZ-6-R7 | IC REG TRPL BCK/LINEAR 16WLCSP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM1032ARZ-REEL7 | 功能描述:板上安裝溫度傳感器 8-PIN TDM 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 |
| ADM1033 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Thermal Monitor and Fan Speed (RPM) Controller |
| ADM1033ARQ | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 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(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 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 |
| ADM1033ARQ-REEL | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 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(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 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 |
| ADM1033ARQ-REEL7 | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 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(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。