- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67357 > ADM1031ARQZ-R7 (ON SEMICONDUCTOR) DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT PDF資料下載
參數(shù)資料
| 型號(hào)： | ADM1031ARQZ-R7 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | LEAD FREE, QSOP-16 |
| 文件頁(yè)數(shù)： | 30/30頁(yè) |
| 文件大?。?/td> | 299K |
| 代理商： | ADM1031ARQZ-R7 |
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)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)當(dāng)前第30頁(yè)
ADM1031
http://onsemi.com
9
Figure 16. Writing to the Address Pointer Register Only
Figure 17. Reading Data from a Previously Selected Register
STOP BY
MASTER
ACK. BY
ADM1031
ACK. BY
ADM1031
START BY
MASTER
SCL
11
9
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
ADDRESS POINTER REGISTER BYTE
0
1
0
1
A1
A0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
SDA
STOP BY
MASTER
ACK. BY
ADM1031
NO ACK.
BY MASTER
START BY
MASTER
SCL
11
9
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
DATA BYTE FROM ADM1031
0
1
0
1
A1
A0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
SDA
Alert Response Address
Alert Response Address (ARA) is a feature of SMBus
devices that allows an interrupting device to identify itself
to the host when multiple devices exist on the same bus.
The INT output can be used as an interrupt output or can
be used as an SMBALERT. One or more INT outputs can be
connected to a common SMBALERT line connected to the
master. If a device’s INT line goes low, the following
procedure occurs:
1. SMBALERT is pulled low.
2. Master initiates a read operation and sends the
Alert Response Address (ARA = 0001 100). This
is a general call address that must not be used as a
specific device address.
3. The device whose INT output is low responds to
the alert response address, and the master reads its
device address. The address of the device is now
known and can be interrogated in the usual way.
4. If more than one device’s INT output is low, the
one with the lowest device address has priority, in
accordance with normal SMBus arbitration.
5. Once the ADM1031 has responded to the alert
response address, it resets its INT output.
However, if the error condition that caused the
interrupt persists, then INT is reasserted on the
next monitoring cycle.
Temperature Measurement System
Internal Measurement
The ADM1031 contains an onchip bandgap temperature
sensor. The onchip ADC performs conversions on the
output of this sensor and outputs the temperature data in
10bit twos complement format. The resolution of the local
temperature sensor is 0.25
°C. The format of the temperature
data is shown in Table 2.
External Measurement
The ADM1031 can measure the temperatures of two
external diode sensors or diodeconnected transistors,
connected to Pins 9 and 10, and Pins 11 and 12.
These pins are dedicated temperature input channels. The
function of Pin 7 is as a THERM input/output and is used to
flag overtemperature conditions.
The forward voltage of a diode or diodeconnected
transistor, operated at a constant current, exhibits a negative
temperature coefficient of about –2 mV/
°C. Unfortunately,
the absolute value of VBE, varies from device to device, and
individual calibration is required to null this out. As a result,
the technique is unsuitable for mass production.
The technique used in the ADM1031 is to measure the
change in VBE when the device is operated at two different
currents.
This is given by:
DVBE = KT/q × In (N)
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 18 shows the input signal conditioning used to
measure the output of an external temperature sensor. This
figure shows the external sensor as a substrate transistor,
provided
for
temperature
monitoring
on
some
microprocessors, but it could equally well be a discrete
transistor.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADM1031ARQZ-REEL | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| ADM1031ARQZ-REEL7 | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| ADM1031ARQZ | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| ADM1031ARQ | DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| ADRF6604ACPZ-R7 | 2500 MHz - 2900 MHz RF/MICROWAVE DOUBLE BALANCED MIXER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM1031ARQZ-REEL | 功能描述:板上安裝溫度傳感器 2 CH TDM PWM FAN CTRL 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 |
| ADM1031ARQZ-REEL7 | 功能描述:IC SENSOR 2TEMP/FAN CTRL 16QSOP RoHS:是 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 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 |
| ADM1032 | 制造商:AD 制造商全稱:Analog Devices 功能描述:+-1C Remote and Local System Temperature Monitor |
| ADM1032_12 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:1C Remote and Local System Temperature Monitor Supports SMBus Alert |
| ADM1032AR | 功能描述:IC TEMP MONITOR 85DEG C 8SOIC 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 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。