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ADuM7643 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADuM7643
Beschreibung (ADuM7640 - ADuM7643) 1 kV RMS Six-Channel Digital Isolators
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 20 Seiten
ADuM7643 Datasheet, Funktion
Data Sheet
1 kV RMS Six-Channel Digital Isolators
ADuM7640/ADuM7641/ADuM7642/ADuM7643
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
www.DataSheet.net/
FUNCTIONAL BLOCK DIAGRAMS
VDD1A 1 ADuM7640
GND1 2
VIA 3
ENCODE
DECODE
VIB 4
ENCODE
DECODE
VIC 5
ENCODE
DECODE
VID 6
ENCODE
DECODE
VDD1B 7
VIE 8
ENCODE
DECODE
VIF 9
ENCODE
DECODE
GND1 10
Figure 1. ADuM7640
20 VDD2A
19 GND2
18 VOA
17 VOB
16 VOC
15 VOD
14 VDD2B
13 VOE
12 VOF
11 GND2
VDD1A 1 ADuM7641
GND1 2
VIA 3
ENCODE
VIB 4
ENCODE
VIC 5
ENCODE
VID 6
ENCODE
VDD1B 7
VOE 8
DECODE
VIF 9
ENCODE
GND1 10
DECODE
DECODE
DECODE
DECODE
ENCODE
DECODE
Figure 2. ADuM7641
20 VDD2A
19 GND2
18 VOA
17 VOB
16 VOC
15 VOD
14 VDD2B
13 VIE
12 VOF
11 GND2
GENERAL DESCRIPTION
The ADuM7640/ADuM7641/ADuM7642/ADuM76431 are
6-channel digital isolators based on the Analog Devices, Inc.,
iCoupler® 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.
1 Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents pending.
VDD1A 1 ADuM7642
GND1 2
VIA 3
ENCODE
DECODE
VIB 4
ENCODE
DECODE
VIC 5
ENCODE
DECODE
VOD 6
DECODE
ENCODE
VDD1B 7
VOE 8
DECODE
ENCODE
VIF 9
ENCODE
DECODE
GND1 10
Figure 3. ADuM7642
20 VDD2A
19 GND2
18 VOA
17 VOB
16 VOC
15 VID
14 VDD2B
13 VIE
12 VOF
11 GND2
VDD1A 1 ADuM7643
GND1 2
VIA 3
ENCODE
DECODE
VIB 4
ENCODE
DECODE
VOC 5
DECODE
ENCODE
VOD 6
DECODE
ENCODE
VDD1B 7
VOE 8
DECODE
ENCODE
VIF 9
ENCODE
DECODE
GND1 10
Figure 4. ADuM7643
20 VDD2A
19 GND2
18 VOA
17 VOB
16 VIC
15 VID
14 VDD2B
13 VIE
12 VOF
11 GND2
Rev. 0
Document Feedback
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.
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
Datasheet pdf - http://www.DataSheet4U.co.kr/






ADuM7643 Datasheet, Funktion
ADuM7640/ADuM7641/ADuM7642/ADuM7643
Data Sheet
Table 6.
Parameter
DC SPECIFICATIONS
Input Voltage Threshold
Logic High
Logic Low
Output Voltages
Logic High
Logic Low
Input Current per Channel
Supply Current per Channel
Quiescent Supply Current
Input
Output
Dynamic Supply Current
Input
Output
AC SPECIFICATIONS
Output Rise/Fall Time
Common-Mode Transient Immunity1
Refresh Rate
Symbol Min
Typ
VIH 0.7 VDDx
VIL
VOH VDDx − 0.2 3.3
VDDx − 0.5 3.1
VOL 0.0
0.2
II −10 +0.01
IDDI (Q)
IDDO (Q)
IDDI (D)
IDDO (D)
tR/tF
|CM|
fr
15
0.68
0.55
0.19
0.03
2.8
20
550
Max Unit
Test Conditions/Comments
0.3 VDDx
0.1
0.4
+10
V
V
V
V
V
V
µA
IOx = −20 µA, VIx = VIxH
IOx = −4 mA, VIx = VIxH
IOx = 20 µA, VIx = VIxL
IOx = 4 mA, VIx = VIxL
0 V ≤ VIx ≤ VDDx
0.87 mA
0.72 mA
mA/Mbps
mA/Mbps
ns
kV/µs
kHz
10% to 90%
VIx = VDDx, VCM = 1000 V,
transient magnitude = 800 V
DC data inputs
1 |CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining VOL < 0.8 VDDLx or VOH > 0.7 × VDDIx. The common-mode voltage slew
rates apply to both rising and falling common-mode voltage edges.
www.DataSheet.net/
Rev. 0 | Page 6 of 20
Datasheet pdf - http://www.DataSheet4U.co.kr/

6 Page









ADuM7643 pdf, datenblatt
ADuM7640/ADuM7641/ADuM7642/ADuM7643
Data Sheet
VDD1A 1
GND1* 2
VIA 3
VIB 4
VIC 5
VID 6
VDD1B 7
VOE 8
VIF 9
GND1* 10
ADuM7641
TOP VIEW
(Not to Scale)
20 VDD2A
19 GND2*
18 VOA
17 VOB
16 VOC
15 VOD
14 VDD2B
13 VIE
12 VOF
11 GND2*
*PIN 2 AND PIN 10 ARE INTERNALLY CONNECTED.
CONNECTING BOTH PINS TO PCB SIDE 1 GROUND
IS RECOMMENDED. PIN 11 AND PIN 19 ARE
INTERNALLY CONNECTED. CONNECTING BOTH
PINS TO PCB SIDE 2 GROUND IS RECOMMENDED.
Figure 7. ADuM7641 Pin Configuration
Table 21. ADuM7641 Pin Function Descriptions
Pin No. Mnemonic Description
1
VDD1A
Supply Voltage A for Isolator Side 1 (3.0 V to 5.5 V). Pin 1 must be connected externally to Pin 7. Connect a 0.01 µF to
0.1 µF between VDD1A (Pin 1) and GND1 (Pin 2).
2
GND1
Ground Reference for Isolator Side 1. Pin 2 and Pin 10 are internally connected, and connecting both pins to the PCB
ground plane is recommended.
3 VIA
Logic Input A.
4 VIB
Logic Input B.
5 VIC
Logic Input C.
6 VID
Logic Input D.
7 VDD1B Supply Voltage B for Isolator Side 1 (3.0 V to 5.5 V). Pin 7 must be connected externally to Pin 1. Connect a 0.01 µF to
0.1 µF between VDD1B (Pin 7) and GND1 (Pin 10).
8 VOE
Logic Output E.
9 VIF
Logic Input F.
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10 GND1 Ground Reference for Isolator Side 1. Pin 2 and Pin 10 are internally connected, and connecting both pins to the PCB
ground plane is recommended.
11 GND2 Ground Reference for Isolator Side 2. Pin 11 and Pin 19 are internally connected, and connecting both pins to the PCB
ground plane is recommended.
12 VOF
Logic Output F.
13 VIE
Logic Input E.
14 VDD2B
Supply Voltage B for Isolator Side 2 (3.0 V to 5.5 V). Pin 14 must be connected externally to Pin 20. Connect a 0.01 µF
to 0.1 µF between VDD2B (Pin 14) and GND2 (Pin 11).
15 VOD
Logic Output D.
16 VOC
Logic Output C.
17 VOB
Logic Output B.
18 VOA
Logic Output A.
19 GND2 Ground Reference for Isolator Side 2. Pin 11 and Pin 19 are internally connected, and connecting both pins to the PCB
ground plane is recommended.
20 VDD2A
Supply Voltage A for Isolator Side 2 (3.0 V to 5.5 V). Pin 20 must be connected externally to Pin 14. Connect a 0.01 µF
to 0.1 µF between VDD2A (Pin 20) and GND2 (Pin 19).
Reference the AN-1109 Application Note for specific layout guidelines.
Rev. 0 | Page 12 of 20
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