欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: ADT7463ARQ
廠商: ANALOG DEVICES INC
元件分類: 模擬信號調理
英文描述: dB COOL Remote Thermal Controller and Voltage Monitor
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO24
封裝: MO-137AE, QSOP-24
文件頁數: 15/53頁
文件大小: 719K
代理商: ADT7463ARQ
REV. 0
ADT7463
–15–
TEMPERATURE MEASUREMENT SYSTEM
Local Temperature Measurement
The ADT7463 contains an on-chip band gap temperature sensor
whose output is digitized by the on-chip 10-bit ADC. The 8-bit
MSB temperature data is stored in the Local Temp Register
(Address 26h). As both positive and negative temperatures can be
measured, the temperature data is stored in twos complement
format, as shown in Table III. Theoretically, the temperature sensor
and ADC can measure temperatures from –128 C to +127 C
with a resolution of 0.25 C. However, this exceeds the operating
temperature range of the device, so local temperature measure-
ments outside this range are not possible.
Remote Temperature Measurement
The ADT7463 can measure the temperature of two remote diode
sensors or diode-connected transistors connected to Pins 15 and
16, or 17 and 18.
The forward voltage of a diode or diode-connected transistor
operated at a constant current exhibits a negative temperature
coefficient of about –2 mV/ C. Unfortunately, the absolute
D+
D–
REMOTE
SENSING
TRANSISTOR
I
N I
I
BIAS
V
DD
V
OUT+
TO ADC
V
OUT–
BIAS
DIODE
LOW-PASS
FILTER
f
C
= 65kHz
THERMDA
THERMDC
CPU
Figure 14. Signal Conditioning for Remote Diode Temperature Sensors
value of V
BE
varies from device to device and individual calibra-
tion is required to null this out, so the technique is unsuitable
for mass production. The technique used in the ADT7463 is to
measure the change in V
BE
when the device is operated at two
different currents.
This is given by:
V
KT q
N
BE
=
×
ln(
)
where:
K
is Boltzmann’s constant
q
is charge on the carrier
T
is absolute temperature in Kelvins
N
is ratio of the two currents.
Figure 14 shows the input signal conditioning used to measure
the output of a remote temperature sensor. This figure shows the
external sensor as a substrate transistor, provided for temperature
monitoring on some microprocessors. It could equally well be a
discrete transistor such as a 2N3904.
相關PDF資料
PDF描述
ADT7466 dBCool Remote Thermal Controller and Voltage Monitor
ADT7466ARQZ dBCool Remote Thermal Controller and Voltage Monitor
ADT7466ARQZ-REEL dBCool Remote Thermal Controller and Voltage Monitor
ADT7466ARQZ-REEL7 dBCool Remote Thermal Controller and Voltage Monitor
ADT7516 SPI/I2C Compatible, Temperature Sensor, Four Channel ADC and Quad Voltage Output DAC
相關代理商/技術參數
參數描述
ADT7463ARQ-REEL 功能描述:IC SENSOR TEMP FAN-CTRL 24QSOP 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
ADT7463ARQ-REEL7 功能描述:IC SENSOR TEMP FAN-CTRL 24QSOP 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
ADT7463ARQZ 功能描述:馬達/運動/點火控制器和驅動器 SYS 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
ADT7463ARQZ-R7 功能描述:板上安裝溫度傳感器 SYS MGMT CNTRLR IC 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
ADT7463ARQZ-REEL 功能描述:板上安裝溫度傳感器 SYS MGMT CNTRLR IC 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
主站蜘蛛池模板: 洛隆县| 常熟市| 遵义市| 澄迈县| 伊宁县| 牡丹江市| 新乡县| 青州市| 峡江县| 锡林浩特市| 大竹县| 柘城县| 旌德县| 梁河县| 南丹县| 吴忠市| 池州市| 即墨市| 双桥区| 陵川县| 安义县| 天峨县| 桃园县| 临猗县| 绥滨县| 天等县| 沐川县| 井研县| 谢通门县| 乌什县| 博乐市| 孙吴县| 阿荣旗| 固阳县| 崇明县| 屯留县| 灵丘县| 勐海县| 东光县| 丽江市| 通江县|