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AD7401YRWZ

更新时间： 2024-11-23 03:10:47
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
20页 458K
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Isolated Sigma-Delta Modulator

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Isolated Sigma-Delta Modulator  
AD7401  
FEATURES  
GENERAꢀ DESCRIPTION  
The AD74011 is a second-order, Σ-Δ modulator that converts  
an analog input signal into a high speed 1-bit data stream with  
on-chip digital isolation based on Analog Devices’ iCoupler®  
technology. The AD7401 operates from a 5 V power supply and  
accepts a differential input signal of ±±00 mV ꢀ±(±0 mV full-  
scale). The analog input is continuously sampled by the analog  
modulator, eliminating the need for external sample-and-hold  
circuitry. The input information is contained in the output  
stream as a density of 1s with a data rate up to 16 MHz. The  
original information can be reconstructed with an appropriate  
digital filter. The serial I/O can use a 5 V or ( V supply ꢀVDD±).  
16 MHz maximum external clock rate  
Second-order modulator  
16 bits no missing codes  
2 ꢀSB INꢀ typical at 16 bits  
3.5 μV/°C maximum offset drift  
On-board digital isolator  
On-board reference  
ꢀow power operation: 18 mA maximum at 5.25 V  
−40°C to +105°C operating range  
16-lead SOIC_W package  
AD7400, internal clock version  
Safety and regulatory approvals  
Uꢀ recognition  
3750 Vrms for 1 min per Uꢀ 1577  
CSA Component Acceptance Notice #5A  
VDE Certificate of Conformity  
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01  
DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000  
VIORM = 891 V peak  
The serial interface is digitally isolated. High speed CMOS,  
combined with monolithic air core transformer technology,  
means the on-chip isolation provides outstanding performance  
characteristics, superior to alternatives such as optocoupler  
devices. The part contains an on-chip reference. The AD7401  
is offered in a 16-lead SOIC_W and has an operating  
temperature range of −40°C to +105°C.  
APPꢀICATIONS  
AC motor control  
1 Protected by U.S. Patents 5,952,849 and 6,291,907.  
Data acquisition systems  
A/D + opto-isolator replacements  
FUNCTIONAꢀ BꢀOCK DIAGRAM  
V
V
DD2  
DD1  
AD7401  
V
V
+
IN  
T/H  
Σ-Δ ADC  
–
IN  
UPDATE  
WATCHDOG  
ENCODE  
DECODE  
BUF  
MDAT  
REF  
CONTROL LOGIC  
WATCHDOG  
UPDATE  
DECODE  
MCLKIN  
ENCODE  
GND  
GND  
1
2
Figure 1.  
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2006 Analog Devices, Inc. All rights reserved.  
 
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AD7401YRWZ 替代型号

型号 品牌 替代类型 描述 数据表
AD7401YRW-REEL ADI

完全替代

 SPECIALTY ANALOG CIRCUIT, PDSO16, MS-013-AA, SOIC-16
AD7401YRWZ-REEL7 ADI

完全替代

 Isolated Sigma-Delta Modulator
AD7401YRWZ-REEL ADI

完全替代

 Isolated Sigma-Delta Modulator

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