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AD7314ARMZ-REEL7 PDF预览

AD7314ARMZ-REEL7

更新时间： 2024-01-20 09:12:53
品牌 Logo 应用领域
亚德诺 - ADI 传感器换能器温度传感器输出元件
页数 文件大小 规格书
8页 164K
描述
Low Voltage, 10-Bit Digital Temperature Sensor in 8-Lead MSOP

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AD7314ARMZ-REEL7 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：TSSOP8,.19
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：0.9最大精度（摄氏度）：2 Cel
主体宽度：3 mm主体高度：0.95 mm
主体长度或直径：3 mm外壳：PLASTIC
JESD-609代码：e3安装特点：SURFACE MOUNT
位数：10端子数量：8
最大工作电流：0.3 mA最高工作温度：85 °C
最低工作温度：-35 °C输出接口类型：4-WIRE INTERFACE
封装主体材料：PLASTIC/EPOXY封装等效代码：TSSOP8,.19
封装形状/形式：SQUARE电源：3/5 V
传感器/换能器类型：TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL子类别：Other Sensors
最大供电电压：5.5 V最小供电电压：2.65 V
表面贴装：YES温度系数：POSITIVE ppm/ °C
端子面层：Matte Tin (Sn)端接类型：SOLDER
Base Number Matches：1

AD7314ARMZ-REEL7 数据手册

 浏览型号AD7314ARMZ-REEL7的Datasheet PDF文件第2页浏览型号AD7314ARMZ-REEL7的Datasheet PDF文件第3页浏览型号AD7314ARMZ-REEL7的Datasheet PDF文件第4页浏览型号AD7314ARMZ-REEL7的Datasheet PDF文件第5页浏览型号AD7314ARMZ-REEL7的Datasheet PDF文件第7页浏览型号AD7314ARMZ-REEL7的Datasheet PDF文件第8页 
AD7314  
CE  
DATA-IN IS LOADED INTO  
CONTROL REGISTER  
ONTHIS EDGE  
SCLK  
SDO  
3
12  
15  
16  
1
2
11  
4
t4  
LEADING  
ZERO  
DB8  
DB0  
DB9  
t6  
DON'T  
CARE  
DON'T  
CARE  
POWER-  
DOWN  
SDI  
Figure 3. Serial Interface Diagram  
Write Operation  
pull-up resistor value for the ID pin. The recommended resistor  
value in Figure 5 minimizes the additional power the AD7314  
has to dissipate, thus reducing any negative affects on the tem-  
perature sensor measurements.  
Figure 3 also shows the interface diagram for a serial write to  
the AD7314. The write operation takes place at the same time  
as the read operation. Data is clocked into the control register  
on the falling edge of SCLK. Only the third bit in the data stream  
provides a user-controlled function. This third bit is the power-  
down bit which, when set to a 1, puts the AD7314 into shutdown  
mode. The first two bits of the data stream are don’t cares while  
all other bits in the data stream other than the power-down bit  
should be 0 to ensure correct operation of the AD7314. Data is  
loaded into the control register on the 15th rising SCLK edge.  
The data takes effect at this time, i.e., if the part is programmed  
to go into shutdown, it does so at this point. If the CE is brought  
low before this 15th SCLK edge, the control register will not be  
loaded and the power-down status of the part will not change.  
2.9V  
100kꢃ  
AD7314*  
ꢂCONTROLLER*  
ID  
1kꢃ  
*ADDITIONAL PINS OMITTED FOR CLARITY  
MICROCONTROLLER INTERFACING  
Figure 5. Typical ID Pin Interface  
The AD7314 serial interface allows for easy interface to most  
microcontrollers and microprocessors. A typical interface circuit  
is shown in Figure 4.  
MOUNTING THE AD7314  
The AD7314 can be used for surface or air temperature sensing  
applications. If the device is cemented to a surface with thermally  
conductive adhesive, the die temperature will be within about  
0.1∞C of the surface temperature, thanks to the device’s low  
power consumption. Care should be taken to insulate the back  
and leads of the device from the air, if the ambient air tempera-  
ture is different from the surface temperature being measured.  
ꢂCONTROLLER*  
AD7314*  
SCLK  
SCLK  
SDI  
SDO  
CE  
DOUT  
DIN  
The ground pin provides the best thermal path to the die, so the  
temperature of the die will be close to that of the printed circuit  
ground track. Care should be taken to ensure that this is in good  
thermal contact with the surface being measured.  
CE  
*ADDITIONAL PINS OMITTED FOR CLARITY  
As with any IC, the AD7314 and its associated wiring and cir-  
cuits must be kept free from moisture to prevent leakage and  
corrosion, particularly in cold conditions where condensation is  
more likely to occur. Water-resistant varnishes and conformal  
coatings can be used for protection. The small size of the AD7314  
package allows it to be mounted inside sealed metal probes that  
provide a safe environment for the device.  
Figure 4. Typical Interface  
The ID pin of the AD7314 can be used to distinguish the  
device if used as a drop-in replacement temperature sensor.  
Connected to Pin 7 (ID pin) is a 1 kW internal pull-down  
resistor. If a pull-up resistor is used on Pin 7 to aid in identify-  
ing a device, then a pull-up value of 100 kW with VDD at 2.9 V  
nominal is recommended. Figure 5 shows the recommended  
–6–  
REV. A  
1...345678

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