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ADuM1241ARSZ-RL7 Datasheet(PDF) 1 Page - Analog Devices |
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ADuM1241ARSZ-RL7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 24 page Micropower, Dual-Channel Digital Isolators Data Sheet ADuM1240/ADuM1241/ADuM1245/ADuM1246 FEATURES Ultralow power operation 3.3 V operation 5.6 µA per channel quiescent current, refresh enabled 0.3 µA per channel quiescent current, refresh disabled 148 µA/Mbps per channel typical dynamic current 2.5 V operation 3.1 µA per channel quiescent current, refresh enabled 0.1 µA per channel quiescent current, refresh disabled 116 µA/Mbps per channel typical dynamic current Small, 20-lead SSOP package and small 8-lead SOIC package Bidirectional communication Up to 2 Mbps data rate nonreturn to zero (NRZ) High temperature operation: 125°C High common-mode transient immunity: >25 kV/µs Safety and Regulatory Approvals UL 1577 component recognition program (pending) 3750 V rms for 1 minute per UL 1577 (20-lead SSOP) 3000 V rms for 1 minute per UL 1577 (8-lead SOIC) CSA Component Acceptance Notice 5A (pending) VDE certificate of conformity (pending) DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 VIORM = 849 V peak (20-lead SSOP) VIORM = 560 V peak (8-lead SOIC) APPLICATIONS General-purpose, low power, multichannel isolation 1 MHz low power serial peripheral interface (SPI) 4 mA to 20 mA loop process control GENERAL DESCRIPTION The ADuM1240/ADuM1241/ADuM1245/ADuM12461 are micropower, 2-channel, digital isolators based on the Analog Devices, Inc., iCoupler® technology. Combining high speed, complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to the alternatives, such as optocoupler devices. The 20-lead SSOP version of the ADuM1240/ADuM1241/ ADuM1245/ADuM1246 allows control of the internal refresh functions. As shown in Figure 3, in standard operating mode, when ENx = 0 (internal refresh enabled), the current per channel is less than 10 µA. When ENx = 1 (internal refresh disabled), the current per channel drops to less than 1 µA. FUNCTIONAL BLOCK DIAGRAMS Figure 1. 20-Lead SSOP Package Functional Block Diagram Figure 2. 8-Lead SOIC Package Functional Block Diagram The ADuM1240/ADuM1241/ADuM1245/ADuM1246 are packaged in either a 20-lead SSOP for 3.75 kV reinforced isolation or an 8-lead SOIC for 3 kV basic isolation. The devices meet regulatory requirements, such as UL and CSA standards. In addition to the space saving package options, the ADuM1240/ ADuM1241/ADuM1245/ADuM1246 operate with supplies as low as 2.25 V. All models provide low, pulse width distortion at <8 ns. In addition, every model has an input glitch filter to protect against extraneous noise disturbances. Figure 3. Typical Total Supply Current (IDD1 + IDD2) per Channel (VDDx = 3.3 V) as a Function of Data Rate 1 Protected by U.S. Patents 5,952,849, 6,873,065, 7,075,329, 6,262,600. Other patents pending. ENCODE DECODE ENCODE DECODE VDD1 GND1 NIC NIC VIA/VOA VIB EN1 NIC VDD2 GND2 NIC NIC VOA/VIA VOB EN2 NIC 1 2 3 4 5 6 7 8 20 19 18 17 16 15 14 13 NIC GND1 NIC GND2 9 10 12 11 ADuM124x ENCODE DECODE ENCODE DECODE VDD1 GND1 VIA/VOA VIB VDD2 VOA/VIA VOB 1 2 3 4 8 7 6 5 GND2 ADuM124x 0.1 1 10 100 1000 0.1 1 10 100 1000 10000 DATA RATE (kbps) ENx = 1 ENx = 0 Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother 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 ©2013–2014 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com |
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