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參數資料
型號: ADT7482ARMZ-REEL
廠商: ON Semiconductor
文件頁數: 8/20頁
文件大小: 282K
描述: IC SENSOR TEMP 2CH ALARM 10MSOP
產品變化通告: MFG CHG Notification ADI to ON Semi
標準包裝: 3,000
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(最小值)
拓撲: ADC,比較器,多路復用器,寄存器庫
輸出類型: SMBus?
輸出警報:
輸出風扇:
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 10-TFSOP,10-MSOP(0.118",3.00mm 寬)
供應商設備封裝: 10-MSOP
包裝: 帶卷 (TR)
ADT7482
http://onsemi.com
8
Figure 15. Input Signal Conditioning
LOW-PASS FILTER
f
C
 = 65 kHz
REMOTE
SENSING
TRANSISTOR
BIAS
DIODE
D+
D
V
DD
I
BIAS
I
N1 ?I
V
OUT+
V
OUT
To ADC
N2 ?I
C1*
*CAPACITOR C1 IS OPTIONAL.
IT SHOULD ONLY BE USED IN
NOISY ENVIRONMENTS.
Temperature Measurement Results
The results of the local and remote temperature
measurements are stored in the local and remote temperature
value registers and are compared with limits programmed
into the local and remote high and low limit registers.
The local temperature measurement is an 8-bit measurement
with 1癈 resolution. The remote temperature measurements
are 10-bit measurements, with the 8 MSBs stored in one
register and the 2 LSBs stored in another register. Table 6 is a
list of the temperature measurement registers.
Table 6. REGISTER ADDRESS FOR THE
TEMPERATURE VALUES
Temperature
Channel
Register Address,
MSBs
Register Address,
LSBs
Local
0x00
N/A
Remote 1
0x01
0x10 (2 MSBs)
Remote 2
0x30
0x33 (2 MSBs)
Set Bit 3 of the Configuration 1 register to 1, to read the
Remote 2 temperature values from the following register
addresses:
Remote 2, MSBs = 0x01
Remote 2, LSBs = 0x10
The above is true only when Bit 3 of the Configuration 1
register is set. To read the Remote 1 temperatures, switch
this bit back to 0.
Only the two MSBs in the remote temperature low byte
are used. This gives the remote temperature measurement a
resolution of 0.25癈. Table 7 shows the data format for the
remote temperature low byte.
Table 7. EXTENDED TEMPERATURE RESOLUTION
(REMOTE TEMPERATURE LOW BYTE)
Extended Resolution
Remote Temperature
Low Byte
0.00癈
0 000 0000
0.25癈
0 100 0000
0.50癈
1 000 0000
0.75癈
1 100 0000
When reading the full remote temperature value, both the
high and low byte, the two registers should be read LSB first
and then MSB. Reading the LSB causes the MSB to be
locked until it is read. This guarantees that the two values are
read as a result of the same temperature measurement.
Temperature Measurement Range
The temperature measurement range for both local and
remote measurements is, by default, 0癈 to +127癈.
However, the ADT7482 can be operated using an extended
temperature range. It can measure the full temperature range
of a remote thermal diode, from 55癈 to +150癈. Switch
between these two temperature ranges by setting or clearing
Bit 2 in the Configuration 1 register. A valid result is
available in the next measurement cycle after changing the
temperature range.
In extended temperature mode, the upper and lower
temperature measured by the ADT7482 is limited by the
remote   diode   selection.   The   temperature   registers
themselves can have values from 64癈 to +191癈.
However,   most   temperature-sensing   diodes   have   a
maximum temperature range of 55癈 to +150癈.
Note that while both local and remote temperature
measurements can be made while the part is in extended
temperature mode, the ADT7482 itself should not be
exposed to temperatures greater than those specified in the
Absolute Maximum Ratings section. Further, the device is
only guaranteed to operate as specified at ambient
temperatures from 40癈 to +120癈.
Temperature Data Format
When the measurement range is in extended mode, an
offset binary data format is used for both local and remote
results. Temperature values in the offset binary data format
are offset by +64. Examples of temperatures in both data
formats are shown in Table 8.
Switching between measurement ranges can be done at
any time. Switching the range also switches the data format.
The next temperature result following the switching is
reported back to the register in the new format. However, the
contents of the limit registers do not change. Ensure that
when the data format changes, the limit registers are
reprogrammed as necessary. For more information, refer to
the Limit Registers section.
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相關代理商/技術參數
參數描述
ADT7482ARMZ-REEL7 功能描述:IC SENSOR TEMP 2CH ALARM 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 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
ADT7482ARMZ-RL7 功能描述:板上安裝溫度傳感器 2 CH TEMP SNSR/ALARM 2 WIRE SMBUS INTRFCE 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
ADT7483A 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7483AARQZ 功能描述:板上安裝溫度傳感器 2 TEMP DIODE MONITOR 2 WIRE SMBUS INTRFCE 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
ADT7483AARQZ-R7 功能描述:板上安裝溫度傳感器 2 TEMP DIODE MONITOR 2 WIRE SMBUS INTRFCE 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
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