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AD7816ARM-REEL

更新时间： 2024-01-04 15:41:22
品牌 Logo 应用领域
亚德诺 - ADI 传感器温度传感器
页数 文件大小 规格书
21页 230K
描述
Single- and 4-Channel, 9 us, 10-Bit ADCs with On-Chip Temperature Sensor

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中文翻译

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AD7816ARM-REEL 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：SOIC-8针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.82
其他特性：THIS IS A TEMPERATURE MEASUREMENT ONLY DEVICE模拟集成电路 - 其他类型：ANALOG CIRCUIT
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.9 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：125 °C最低工作温度：-55 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.75 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：2.7 V标称供电电压 (Vsup)：3 V
表面贴装：YES温度等级：MILITARY
端子面层：MATTE TIN端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：3.9 mm
Base Number Matches：1

AD7816ARM-REEL 数据手册

 浏览型号AD7816ARM-REEL的Datasheet PDF文件第12页浏览型号AD7816ARM-REEL的Datasheet PDF文件第13页浏览型号AD7816ARM-REEL的Datasheet PDF文件第14页浏览型号AD7816ARM-REEL的Datasheet PDF文件第16页浏览型号AD7816ARM-REEL的Datasheet PDF文件第17页浏览型号AD7816ARM-REEL的Datasheet PDF文件第18页 
AD7816/AD7817/AD7818  
tPOWER-UP  
t1  
CONVST  
t3  
BUSY  
CS  
t15  
OTI  
RD/WR  
SCLK  
t16  
D
DB7 – DB0  
IN  
DB7(DB9) – DB0  
D
OUT  
Figure 17. Mode 2 Operation  
10  
POWER VS. THROUGHPUT  
Superior power performance can be achieved by using the Auto-  
matic Power-Down (Mode 2) at the end of a conversion (see  
Operating Modes section of this data sheet).  
1
tPOWER-UP  
tCONVERT  
2␮s  
8␮s  
CONVST  
0.1  
BUSY  
tCYCLE  
100␮s @ 10kSPS  
0.01  
0
10  
20  
30  
40  
50  
60  
70  
80  
THROUGHPUT – kHz  
Figure 18. Automatic Power-Down  
Figure 19. Power vs. Throughput Rate  
AD7817 SERIAL INTERFACE  
Figure 18 shows how the Automatic Power-Down is imple-  
mented to achieve the optimum power performance from the  
AD7816, AD7817, and AD7818. The devices are operated in  
Mode 2 and the duration of CONVST pulse is set to be equal to  
the power-up time (2 µs). As the throughput rate of the device is  
reduced the device remains in its power-down state longer, and  
the average power consumption over time drops accordingly.  
The serial interface on the AD7817 is a 5-wire interface with  
read and write capabilities, with data being read from the output  
register via the DOUT line and data being written to the control  
register via the DIN line. The part operates in a slave mode and  
requires an externally applied serial clock to the SCLK input to  
access data from the data register or write to the control byte.  
The RD/WR line is used to determine whether data is being  
written to or read from the AD7817. When data is being written  
to the AD7817, the RD/WR line is set logic low and when data  
is being read from the part the line is set logic high (see Figure  
20). The serial interface on the AD7817 is designed to allow the  
part to be interfaced to systems that provide a serial clock that is  
synchronized to the serial data, such as the 80C51, 87C51,  
68HC11, 68HC05, and PIC16Cxx microcontrollers.  
For example, if the AD7817 is operated in a continuous sam-  
pling mode with a throughput rate of 10 kSPS, the power con-  
sumption is calculated as follows. The power dissipation during  
normal operation is 4.8 mW, VDD = 3 V. If the power up time is  
2 µs and the conversion time is 9 µs, the AD7817 can be said to  
dissipate 4.8 mW typically for 11 µs (worst case) during each  
conversion cycle. If the throughput rate is 10 kSPS, the cycle  
time is 100 µs and the power dissipated while powered up dur-  
ing each cycle is (11/100) × (4.8 mW) = 528 µW typ. Power  
dissipated while powered down during each cycle is (89/100) ×  
(3 V × 2 µA) = 5.34 µW typ. Overall power dissipated is 528 µW  
+ 5.34 µW = 533 µW.  
REV. C  
–15–  
1...12131415161718...21

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