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ADuM3442CRWZ Arkusz danych(PDF) 1 Page - Analog Devices |
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ADuM3442CRWZ Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 24 page Quad Channel, High Speed Digital Isolators Data Sheet ADuM3440/ADuM3441/ADuM3442 Rev. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007–2012 Analog Devices, Inc. All rights reserved. FEATURES Low power operation 5 V operation 1.7 mA per channel maximum @ 0 Mbps to 2 Mbps 68 mA per channel maximum @ 150 Mbps 3.3 V operation 1.0 mA per channel maximum @ 0 Mbps to 2 Mbps 33 mA per channel maximum @ 150 Mbps Bidirectional communication 3.3 V/5 V level translation High temperature operation: 105°C High data rate: dc to 150 Mbps (NRZ) Precise timing characteristics 5 ns maximum pulse width distortion 5 ns maximum channel-to-channel matching High common-mode transient immunity: >25 kV/μs Output enable function 16-lead SOIC wide body package Safety and regulatory approvals UL recognition: 2500 V rms for 1 minute per UL 1577 CSA Component Acceptance Notice #5A VDE certificate of conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM = 560 V peak APPLICATIONS High speed multichannel isolation SPI interface/data converter isolation Instrumentation FUNCTIONAL BLOCK DIAGRAMS ENCODE DECODE ENCODE DECODE ENCODE DECODE ENCODE DECODE VDD1 GND1 VIA VIB VIC VID NC GND1 VDD2 GND2 VOA VOB VOC VOD VE2 GND2 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 ADuM3440 Figure 1. ADuM3440 Functional Block Diagram DECODE ENCODE ENCODE DECODE ENCODE DECODE ENCODE DECODE VDD1 GND1 VIA VIB VIC VOD VE1 GND1 VDD2 GND2 VOA VOB VOC VID VE2 GND2 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 ADuM3441 Figure 2. ADuM3441 Functional Block Diagram DECODE ENCODE DECODE ENCODE ENCODE DECODE ENCODE DECODE VDD1 GND1 VIA VIB VOC VOD VE1 GND1 VDD2 GND2 VOA VOB VIC VID VE2 GND2 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 ADuM3442 Figure 3. ADuM3442 Functional Block Diagram GENERAL DESCRIPTION The ADuM344x1 are four channel, digital isolators based on the Analog Devices, Inc., iCoupler® technology supporting data rates up to 150 Mbps. Combining high speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as optocoupler devices. By avoiding the use of LEDs and photodiodes, iCoupler devices remove the design difficulties commonly associated with optocouplers. The typical optocoupler concerns regarding uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects are eliminated with the simple iCoupler digital interfaces and stable performance characteristics. The need for external drivers and other discrete components is eliminated with these iCoupler products. Furthermore, iCoupler devices consume one-tenth to one-sixth the power of optocouplers at comparable signal data rates. The ADuM344x isolators provide four independent isolation channels in a variety of channel configurations (see the Ordering Guide). The ADuM344x operates with the supply voltage on either side ranging from 3.0 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. In addition, the ADuM344x provides low pulse width distortion and tight channel-to-channel matching. Unlike other opto- coupler alternatives, the ADuM344x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during the power-up/power-down condition. 1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. |
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