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(shù)資料
型號(hào): ADT7476AARQZ-R
廠商: ON Semiconductor
文件頁(yè)數(shù): 16/66頁(yè)
文件大?。?/td> 945K
描述: IC REMOTE THERMAL CTLR 24QSOP
產(chǎn)品變化通告: MFG CHG Notification ADI to ON Semi
QSOP 24ld Pkg (MSL) Change 17/Jun/2010
標(biāo)準(zhǔn)包裝: 2,500
系列: dBCool®
功能: 風(fēng)扇控制,溫度監(jiān)控器
傳感器類(lèi)型: 內(nèi)部和外部
感應(yīng)溫度: -40°C ~ 125°C
精確度: ±2.5%
拓?fù)洌?/td> ADC,比較器,風(fēng)扇速度計(jì)數(shù)器,多路復(fù)用器,寄存器庫(kù)
輸出類(lèi)型: SMBus?
輸出警報(bào): 無(wú)
輸出風(fēng)扇:
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 125°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 24-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 24-QSOP
包裝: 帶卷 (TR)
其它名稱: ADT7476AARQZ-R-ND
ADT7476AARQZ-ROSTR
ADT7476A
http://onsemi.com
16
Table 14. TWOS COMPLEMENT TEMPERATURE DATA
FORMAT
Temperature
Digital Output (10-bit) (Note 1)
128癈
1000 0000 00 (Diode Fault)
50癈
1100 1110 00
25癈
1110 0111 00
10癈
1111 0110 00
0癈
0000 0000 00
+10.25癈
0000 1010 01
+25.5癈
0001 1001 10
+50.75癈
0011 0010 11
+75癈
0100 1011 00
+100癈
0110 0100 00
+125癈
0111 1101 00
+127癈
0111 1111 00
1.  Bold numbers denote 2 LSB of measurement in the Extended
Resolution Register 2 (0x77) with 0.25癈 resolution.
Table 15. EXTENDED RANGE, TEMPERATURE DATA
FORMAT
Temperature
Digital Output (10-bit) (Note 1)
64癈
0000 0000 00 (Diode Fault)
1癈
0011 1111 00
0癈
0100 0000 00
1癈
0100 0001 00
10癈
0100 1010 00
25癈
0101 1001 00
50癈
0111 0010 00
75癈
1000 1001 00
100癈
1010 0100 00
125癈
1011 1101 00
191癈
1111 1111 00
1.  Bold numbers denote 2 LSB of measurement in the Extended
Resolution Register 2 (0x77) with 0.25癈 resolution.
Remote Temperature Measurement
The ADT7476A can measure the temperature of two
remote diode sensors or diode-connected transistors
connected to Pin 17 and Pin 18, or Pin 15 and Pin 16.
The forward voltage of a diode or diode-connected
transistor operated at a constant current exhibits a negative
temperature coefficient of about 2 mV/癈. Unfortunately,
the absolute value of V
BE
 varies from device to device, and
individual calibration is required to null this out. As a result,
this technique is unsuitable for mass production. The
technique used in the ADT7476A is to measure the change
in V
BE
 when the device is operated at two different currents.
This is given by:
(eq. 1)
DV
BE
+
kT
q
  In
(
N
)
where:
k is the Boltzmanns constant.
q is the charge on the carrier.
T is the absolute temperature in Kelvin.
N is the ratio of the two currents.
Figure 25 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,
which is provided on some microprocessors for temperature
monitoring. It could also be a discrete transistor such as a
2N3904/2N3906.
If a discrete transistor is used, the collector is not grounded
and is linked to the base. If a PNP transistor is used, the base
is connected to the D input and the emitter to the D+ input.
If an NPN transistor is used, the emitter is connected to the
D input and the base to the D+ input. Figure 26 and
Figure 27 show how to connect the ADT7476A to an NPN
or PNP transistor for temperature measurement. To prevent
ground noise from interfering with the measurement, the
more negative terminal of the sensor is not referenced to
ground, but is biased above ground by an internal diode at
the D input.
Figure 25. Signal Conditioning for Remote Diode Temperature Sensors
LOW-PASS FILTER
f
C
 = 65 kHz
REMOTE
SENSING
TRANSISTOR
BIAS
DIODE
D+
D
V
DD
I
BIAS
I
N ?I
V
OUT+
V
OUT
To ADC
THERMDA
THERMDC
CPU
相關(guān)PDF資料
PDF描述
ADT7481ARMZ-1RL IC SENSOR TEMP 2CH ALARM 10MSOP
ADT7482ARMZ-REEL IC SENSOR TEMP 2CH ALARM 10MSOP
ADT7485AARMZ-R IC TEMP/VOLT DGL SENS SST 10MSOP
ADT7486AARMZ-RL IC TEMP SENS DGTL 2CH SST 10MSOP
ADT7488AARMZ-RL IC TEMP/VOLT DGTL W/SST 10MSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADT7476AARQZ-REEL 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:是 類(lèi)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(lèi)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(lèi)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(lèi)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
ADT7476AARQZ-REEL7 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:是 類(lèi)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(lèi)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(lèi)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(lèi)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
ADT7476AARQZ-RL7 功能描述:板上安裝溫度傳感器 MONITORS 5V/4 FANS RoHS:否 制造商:Omron Electronics 輸出類(lèi)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
ADT7476ARQH 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:dBCOOL Remote Thermal Controller and Voltage Monitor
ADT7476ARQH-REEL 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:dBCOOL Remote Thermal Controller and Voltage Monitor
主站蜘蛛池模板: 朝阳县| 沈阳市| 大名县| 株洲县| 彩票| 巴彦淖尔市| 广安市| 平罗县| 边坝县| 江津市| 周口市| 长顺县| 商城县| 安国市| 泰州市| 广西| 石首市| 颍上县| 固安县| 太原市| 革吉县| 兰考县| 泗阳县| 茌平县| 双柏县| 女性| 绩溪县| 清远市| 陆川县| 祁连县| 应用必备| 连城县| 宁海县| 盘锦市| 达拉特旗| 盱眙县| 侯马市| 泾阳县| 洱源县| 襄汾县| 江孜县|