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AD7745ARUZ-REEL7 PDF预览

AD7745ARUZ-REEL7

更新时间: 2024-01-25 00:32:23
品牌 Logo 应用领域
亚德诺 - ADI 转换器传感器温度传感器
页数 文件大小 规格书
28页 993K
描述
24-Bit Capacitance-to-Digital Converter with Temperature Sensor

AD7745ARUZ-REEL7 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:1.48
最大精度(摄氏度):2 Cel主体宽度:4.4 mm
主体高度:1.2 mm主体长度或直径:5 mm
JESD-609代码:e3安装特点:SURFACE MOUNT
位数:24最大工作电流:0.7 mA
最高工作温度:125 °C最低工作温度:-40 °C
输出接口类型:2-WIRE INTERFACE封装形状/形式:RECTANGULAR
传感器/换能器类型:TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL最大供电电压:5.25 V
最小供电电压:2.7 V表面贴装:YES
端子面层:Matte Tin (Sn)端接类型:SOLDER
Base Number Matches:1

AD7745ARUZ-REEL7 数据手册

 浏览型号AD7745ARUZ-REEL7的Datasheet PDF文件第1页浏览型号AD7745ARUZ-REEL7的Datasheet PDF文件第2页浏览型号AD7745ARUZ-REEL7的Datasheet PDF文件第4页浏览型号AD7745ARUZ-REEL7的Datasheet PDF文件第5页浏览型号AD7745ARUZ-REEL7的Datasheet PDF文件第6页浏览型号AD7745ARUZ-REEL7的Datasheet PDF文件第7页 
AD7745/AD7746  
SPECIFICATIONS  
VDD = 2.7 V to 3.6 V or 4.75 V to 5.25 V; GND = ± V; EXC = 32 kHz; EXC = ±VDD/2; –4±°C to +125°C, unless otherwise noted.  
Table 1.  
Parameter  
Min  
Typ  
Max  
Unit  
Test Conditions/Comments  
CAPACITIVE INPUT  
Conversion Input Range  
Integral Nonlinearity (INL)2  
No Missing Codes2  
Resolution, p-p  
±±.0ꢀ9  
pF1  
% of FSR  
Bit  
Bit  
Bit  
Factory calibrated  
±0.01  
2±  
Conversion time ≥ 92 ms  
19.5  
1ꢀ  
2
Conversion time = 92 ms, see Table 5  
Conversion time = 92 ms, see Table 5  
See Table 5  
Resolution Effective  
Output Noise, rms  
Absolute Error3  
aF/Hz  
fF1  
aF1  
±±  
32  
25°C, VDD = 5 V, after offset calibration  
After system offset calibration,  
Excluding effect of noise±  
Offset Error2, ±  
System Offset Calibration Range2  
Offset Drift vs. Temperature  
Gain Error5  
Gain Drift vs. Temperature2  
Allowed Capacitance to GND2  
Power Supply Rejection  
Normal Mode Rejection  
±1  
pF  
aF/°C  
% of FS  
ppm of FS/°C  
–1  
0.02  
–29  
0.08  
–2±  
90  
25°C, VDD = 5 V  
–28  
pF  
See Figure ꢀ and Figure 10  
0.3  
95  
55  
70  
1
fF/V  
dB  
dB  
dB  
50 Hz ± 1%, conversion time = 92 ms  
90 Hz ± 1%, conversion time = 92 ms  
AD77±9 only  
Channel-to-Channel Isolation  
CAPDAC  
Full Range  
17  
2±  
21  
19±  
29  
pF  
fF  
Resolution9  
7-bit CAPDAC  
Drift vs. Temperature2  
28  
ppm of FS/°C  
EXCITATION  
Frequency  
Voltage Across Capacitance  
32  
kHz  
V
V
±VDD/8  
±VDD/±  
±VDD × 3/8  
±VDD/2  
Configurable via digital interface  
V
V
Average DC Voltage Across  
Capacitance  
<±±0  
100  
mV  
Allowed Capacitance to GND2  
TEMPERATURE SENSOR7  
Resolution  
pF  
See Figure 11  
VREF internal  
0.1  
±0.5  
±2  
°C  
°C  
°C  
Error2  
±2  
Internal temperature sensor  
External sensing diode8  
VREF internal or VREF = 2.5 V  
VOLTAGE INPUT7  
Differential VIN Voltage Range  
Absolute VIN Voltage2  
Integral Nonlinearity (INL)  
No Missing Codes2  
±VREF  
±3  
V
V
GND − 0.03  
2±  
VDD + 0.03  
±15  
ppm of FS  
Bit  
Conversion time = 122.1 ms  
Resolution, p-p  
19  
3
Bits  
Conversion time = 92 ms  
See Table 9 and Table 7  
Conversion time = 92 ms  
See Table 9 and Table 7  
Output Noise  
µV rms  
Offset Error  
±3  
µV  
Offset Drift vs. Temperature  
Full-Scale Error2, ꢀ  
15  
0.025  
nV/°C  
% of FS  
0.1  
Rev. 0| Page 3 of 28  
 
 
 
 
 
 

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