Data Sheet
FEATURES
1 kV RMS Six-Channel Digital Isolators ADuM7640/ADuM7641/ADuM7642/ADuM7643
FUNCTIONAL BLOCK DIAGRAM...
Data Sheet
FEATURES
1 kV RMS Six-Channel Digital Isolators ADuM7640/ADuM7641/ADuM7642/ADuM7643
FUNCTIONAL BLOCK DIAGRAMS
VDD1A 1 GND1 2 VIA 3 VIB 4 VIC 5 VID 6 VDD1B 7 VIE 8 VIF 9 GND1 10
ENCODE ENCODE DECODE DECODE ENCODE ENCODE ENCODE ENCODE DECODE DECODE DECODE DECODE
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
ADuM7640
20 VDD2A 19 GND2 18 VOA 17 VOB 16 VOC 15 VOD 14 VDD2B 13 VOE
10448-001
12 VOF 11 GND2
Figure 1. ADuM7640
VDD1A 1 GND1 2 VIA 3 VIB 4 VIC 5 VID 6 VDD1B 7 VOE 8 VIF 9 GND1 10
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ADuM7641
ENCODE ENCODE ENCODE ENCODE DECODE DECODE DECODE DECODE
20 19 18 17 16 15 14
VDD2A GND2 VOA VOB VOC VOD VDD2B VIE
10448-002
APPLICATIONS
General-purpose, multichannel isolation SPI interface/data converter isolation RS-232/RS-422/RS-485 transceivers Industrial field bus isolation
DECODE ENCODE
ENCODE DECODE
13 12 11
VOF GND2
Figure 2. ADuM7641
VDD1A 1 GND1 2 VIA 3 VIB 4 VIC 5 VOD 6 VDD1B 7 VOE 8 VIF 9 GND1 10
DECODE ENCODE ENCODE DECODE ENCODE ENCODE ENCODE DECOD...