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MAX22820

更新时间： 2024-10-04 14:57:47
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亚德诺 - ADI /
页数 文件大小 规格书
26页 1723K
描述
超低功耗双通道增强型数字隔离器

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中文翻译

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MAX22820 数据手册

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Reinforced, Ultra-Low-Power,  
Two-Channel Digital Isolators  
MAX22420, MAX22421  
MAX22820, MAX22821  
Simplified Application Diagram  
Product Highlights  
•
Ultra-Low Power Consumption  
• 11.4μA per Channel at DC with VDD = 3.3V  
3.3V  
0.1μF  
MAX22820  
5V  
V
V
24V  
DDA  
DDB  
• 15.4μA per Channel at 100kbps with VDD = 3.3V  
0.1μF  
• 54.7μA per Channel at 1Mbps with V  
= 3.3V  
DD  
V
V
V
CC  
DD  
CCI  
V
CC  
OUT1  
OUT2  
IN1  
•
•
Wide Supply Range Supports from 1.71V to 5.5V  
Reinforced Galvanic Isolation for Digital Signals  
• 8-NSOIC with 4mm Creepage and Clearance  
Withstands 3kVRMS for 60s (VISO) and  
Continuously Withstands 445VRMS (VIOWM)  
• 8-WSOIC with 8mm Creepage and Clearance  
Withstands 5kVRMS for 60s (VISO) and  
Continuously Withstands 848VRMS (VIOWM)  
• Withstands ±10kV Surge Between GNDA and  
GNDB with 1.2/50μs Waveform  
FIELD  
SENSOR  
MICRO  
CONTROLLER  
4-20mA  
DRIVER  
IN2  
GND  
GND  
GND  
GNDA  
GNDB  
Pin Configurations  
• High CMTI (200kV/μs, min)  
TOP VIEW  
•
•
Low Propagation Delay and Low Jitter  
• Maximum Data Rate Up to 10Mbps  
• Low Propagation Delay 51ns (typ) at VDD = 3.3V  
• Clock Jitter RMS 15.4ps (typ)  
+
+
1
2
3
4
8
7
6
5
1
8
7
6
5
V
V
V
V
DDA  
IN1  
DDB  
DDA  
DDB  
OUT1  
OUT2  
GNDB  
OUT1  
IN2  
2
3
4
IN1  
MAX22420  
MAX22820  
MAX22421  
MAX22821  
IN2  
OUT2  
GNDB  
Safety Regulatory Approvals  
• UL According to UL1577  
GNDA  
GNDA  
IN BOTH NARROW AND WIDE SOIC  
• cUL According to CSA Bulletin 5A  
• VDE 0884-11 Reinforced Insulation (Pending)  
• IECEx and ATEX Intrinsic Safety (IS): Sira 0518  
II 1G Ex ia IIC Ga (Pending)  
These devices transfer digital signals between circuits  
with different power domains, using as little as 90.7μW  
per channel at 1Mbps (1.8V supply). The ultra-low-  
power feature reduces system dissipation, increases  
reliability, and enables compact designs.  
Key Applications  
Devices are available with a glitch rejection filter of either  
29ns or 70ns (typ) and with default-high or default-low  
outputs. The devices feature low propagation delay and  
low clock jitter, which reduces system latency.  
•
•
•
•
4-20mA Loop Process Control  
Battery Management  
Compact Micro PLC  
Parasitically Powered Applications  
Independent 1.71V to 5.5V supplies on each side also  
make the devices suitable for use as level translators.  
The MAX22420/1, MAX22820/1 are a family of 2-  
channel, reinforced, ultra-low-power digital galvanic  
isolators using Analog Devices’ proprietary process  
technology. The MAX22420/1 feature reinforced  
The MAX22420/MAX22820 feature two channels  
transferring data in the same direction. The two channels  
of the MAX22421/MAX22821 transfer data in opposite  
directions.  
isolation with a withstand voltage rating of 3kV  
for  
RMS  
60 seconds. The MAX22820/1 feature reinforced  
isolation with a withstand voltage rating of 5kV for  
RMS  
60 seconds. Devices are rated for operation at ambient  
temperature from -40°C to +125°C.  
Ordering Information appears at end of data sheet.  
19-101281; Rev 3; 11/23  
© 2023 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
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