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ADuM7640CRQZ Datasheet(PDF) 1 Page - Analog Devices |
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ADuM7640CRQZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page 1 kV RMS Six-Channel Digital Isolators Data Sheet ADuM7640/ADuM7641/ADuM7642/ADuM7643 Rev. 0 Document Feedback 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 ©2012 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Small 20-lead QSOP 1000 V rms isolation rating Safety and regulatory approvals (pending): UL recognition (pending) 1000 V rms for 1 minute per UL 1577 Low power operation 3.3 V operation 1.6 mA per channel maximum at 0 Mbps to 1 Mbps 7.8 mA per channel maximum at 25 Mbps 5 V operation 2.2 mA per channel maximum at 0 Mbps to 1 Mbps 11.2 mA per channel maximum at 25 Mbps Bidirectional communication Up to 25 Mbps data rate (NRZ) 3 V/5 V level translation High temperature operation: 105°C High common-mode transient immunity: >15 kV/μs APPLICATIONS General-purpose, multichannel isolation SPI interface/data converter isolation RS-232/RS-422/RS-485 transceivers Industrial field bus isolation GENERAL DESCRIPTION The ADuM7640/ADuM7641/ADuM7642/ADuM76431 are 6-channel digital isolators based on the Analog Devices, Inc., i Coupler® technology. These 1 kV digital isolation devices are packaged in a small 20-lead QSOP. They offer space savings and a lower price than 2.5 kV or 5 kV isolation solutions when only functional isolation is needed. This family, like many Analog Devices isolators, offers very low power consumption, using one-tenth to one-sixth the power of other digital isolators, with the supply voltage on either side ranging from 3.0 V to 5.5 V. Despite their low power consumption, the ADuM7640/ADuM7641/ADuM7642/ADuM7643 provide low pulse width distortion (< 6 ns for C grade) and a channel- by-channel glitch filter to protect the device against extraneous noise disturbances. Four channel direction combinations are available with a maximum data rate of 1 Mbps or 25 Mbps. All products have a default output high logic state in the absence of input power. FUNCTIONAL BLOCK DIAGRAMS VDD1A VDD2A 1 20 GND1 GND2 2 19 VIA VOA 3 18 ENCODE DECODE VIB VOB 4 17 ENCODE DECODE VIC VOC 5 16 ENCODE DECODE VID VOD 6 15 ENCODE DECODE VDD1B VDD2B 7 14 VIE VOE 8 13 ENCODE DECODE VIF VOF 9 12 ENCODE DECODE GND1 GND2 10 11 ADuM7640 Figure 1. ADuM7640 VDD1A VDD2A 1 20 GND1 GND2 2 19 VIA VOA 3 18 ENCODE DECODE VIB VOB 4 17 ENCODE DECODE VIC VOC 5 16 ENCODE DECODE VID VOD 6 15 ENCODE DECODE VDD1B VDD2B 7 14 VOE VIE 8 13 DECODE ENCODE VIF VOF 9 12 ENCODE DECODE GND1 GND2 10 11 ADuM7641 Figure 2. ADuM7641 VDD1A VDD2A 1 20 GND1 GND2 2 19 VIA VOA 3 18 ENCODE DECODE VIB VOB 4 17 ENCODE DECODE VIC VOC 5 16 ENCODE DECODE VOD VID 6 15 DECODE ENCODE VDD1B VDD2B 7 14 VOE VIE 8 13 DECODE ENCODE VIF VOF 9 12 ENCODE DECODE GND1 GND2 10 11 ADuM7642 Figure 3. ADuM7642 VDD1A VDD2A 1 20 GND1 GND2 2 19 VIA VOA 3 18 ENCODE DECODE VIB VOB 4 17 ENCODE DECODE VOC VIC 5 16 DECODE ENCODE VOD VID 6 15 DECODE ENCODE VDD1B VDD2B 7 14 VOE VIE 8 13 DECODE ENCODE VIF VOF 9 12 ENCODE DECODE GND1 GND2 10 11 ADuM7643 Figure 4. ADuM7643 1 Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents pending. |
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