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PDF ADuM7640 Data sheet ( Hoja de datos )
| Número de pieza | ADuM7640 | |
| Descripción | (ADuM7640 - ADuM7643) 1 kV RMS Six-Channel Digital Isolators | |
| Fabricantes | Analog Devices | |
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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
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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/
1 page  
Data Sheet
ADuM7640/ADuM7641/ADuM7642/ADuM7643
ELECTRICAL CHARACTERISTICS—3.3 V OPERATION
All typical specifications are at TA = 25°C, VDD1 = VDD2 = 3.3 V. Minimum/maximum specifications apply over the entire recommended
operation range of 3.0 V ≤ VDD1 ≤ 3.6 V, 3.0 V ≤ VDD2 ≤ 3.6 V, and −40°C ≤ TA ≤ +105°C, unless otherwise noted. Switching specifications
are tested with CL = 15 pF and CMOS signal levels, unless otherwise noted.
Table 4.
Parameter
SWITCHING SPECIFICATIONS
Pulse Width
Data Rate
Propagation Delay
Pulse Width Distortion
Change vs. Temperature
Propagation Delay Skew1
Channel Matching
Codirectional2
Opposing Directional3
Jitter
Symbol
PW
tPHL, tPLH
PWD
tPSK
tPSKCD
tPSKOD
Min
250
A Grade
Typ Max
1
85
25
5
20
25
30
2
C Grade
Min Typ Max
Unit
Test Conditions/Comments
40 ns Within PWD limit
25 Mbps Within PWD limit
33 49 66 ns
50% input to 50% output
2 6 ns |tPLH − tPHL|
3 ps/°C
14 ns
6 12 ns
6 15 ns
2 ns
1 tPSK is the magnitude of the worst-case difference in tPHL or tPLH that is measured between units at the same operating temperature, supply voltages, and output load
within the recommended operating conditions.
2 Codirectional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on the same side of the isolation barrier.
3 Opposing directional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on opposite sides of the
isolation barrier.
Table 5.
Parameter
SUPPLY CURRENT
ADuM7640
ADuM7641
ADuM7642
Symbol
IDD1
IDD2
IDD1
IDD2
IDD1
IDD2
1 Mbps—A and C Grades 25 Mbps—C Grade
Min Typ Max Min Typ Max
4.1
5.2
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3.3 4.3
3.9 4.9
3.4 4.2
3.7 4.7
3.5 4.4
32 38
7.2 8.7
27 33
11 13
23 27
14 16
Unit
mA
mA
mA
mA
mA
mA
Test Conditions/Comments
No load
ADuM7643
IDD1
3.5 4.4
18 21 mA
IDD2
3.6 4.5
16 20 mA
Rev. 0 | Page 5 of 20
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page 
Data Sheet
ADuM7640/ADuM7641/ADuM7642/ADuM7643
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
VDD1A 1
GND1* 2
VIA 3
VIB 4
VIC 5
VID 6
VDD1B 7
VIE 8
VIF 9
GND1* 10
ADuM7640
TOP VIEW
(Not to Scale)
20 VDD2A
19 GND2*
18 VOA
17 VOB
16 VOC
15 VOD
14 VDD2B
13 VOE
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 6. ADuM7640 Pin Configuration
Table 20. ADuM7640 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
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0.1 µF between VDD1B (Pin 7) and GND1 (Pin 10).
8 VIE
Logic Input E.
9 VIF
Logic Input F.
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 VOE
Logic Output 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 11 of 20
Datasheet pdf - http://www.DataSheet4U.co.kr/
11 Page | ||
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