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PDF ADuM7241 Data sheet ( Hoja de datos )
| Número de pieza | ADuM7241 | |
| Descripción | (ADuM7240 / ADuM7241) Dual Channel Digital Isolators | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
1 kV, Dual Channel Digital Isolators
ADuM7240/ADuM7241
FEATURES
Narrow-body, RoHS-compliant, 8-lead SOIC
Safety and regulatory approvals
UL recognition (pending)
UL 1577: 1000 V rms for 1 minute
Low power operation
5 V operation
2.4 mA per channel maximum at 0 Mbps to 1 Mbps
11.8 mA per channel maximum at 25 Mbps
3.3 V operation
1.7 mA per channel maximum at 0 Mbps to 1 Mbps
8.2 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
Data converter isolation
Industrial field bus isolation
GENERAL DESCRIPTION
The ADuM7240/ADuM72411 are dual channel digital isolators
based on the Analog Devices, Inc., iCoupler® technology.
Combining high speed CMOS and monolithic air core trans-
former technologies, these isolation components provide
outstanding performance characteristics superior to the alterna-
tives, such as optocoupler devices and other integrated couplers.
The ADuM7240/ADuM7241 dual 1 kV digital isolation devices
are packaged in a narrow-body 8-lead SOIC. The ADuM7240/
ADuM7241 offer a cost-effective option compared to 2.5 kV or
5 kV isolators where only functional isolation is needed.
Like other Analog Devices isolators, the ADuM7240/ADuM7241
offer very low power consumption, consuming one-tenth to
one-sixth the power of comparable isolators at data rates up to
25 Mbps. Despite the low power consumption, all models of the
FUNCTIONAL BLOCK DIAGRAMS
VDD1 1
VIA 2
VIB 3
GND1 4
ENCODE
ENCODE
ADuM7240
DECODE
DECODE
Figure 1. ADuM7240
8 VDD2
7 VOA
6 VOB
5 GND2
VDD1 1
VOA 2
VIB 3
GND1 4
DECODE
ENCODE
ADuM7241
ENCODE
DECODE
Figure 2. ADuM7241
8 VDD2
7 VIA
6 VOB
5 GND2
www.DataSheet.co.kr
ADuM7240/ADuM7241 provide low pulse width distortion
(<5 ns for C grade). In addition, every model has an input glitch
filter to protect against extraneous noise disturbances.
The ADuM7240/ADuM7241 provide two independent
isolation channels and are available in two channel configura-
tions with 1 Mbps or 25 Mbps data rates (see the Ordering
Guide). All models operate with the supply voltage on either
side ranging from 3.0 V to 5.5 V, providing compatibility with
lower voltage systems as well as enabling voltage translation
functionality across the isolation barrier. The ADuM7240/
ADuM7241also have an output default 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.
Rev. 0
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
www.analog.com
Fax: 781.461.3113
©2012 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
Data Sheet
ADuM7240/ADuM7241
ELECTRICAL CHARACTERISTICS—MIXED 5 V/3.3 V OPERATION
All typical specifications are at TA = 25°C, VDD1 = 5 V, VDD2 = 3.3 V. Minimum/maximum specifications apply over the entire recom-
mended operation range of 4.5 V ≤ VDD1 ≤ 5.5 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 7.
A Grade
C Grade
Parameter
Symbol Min Typ Max Min Typ Max Unit
Test Conditions/Comments
SWITCHING SPECIFICATIONS
Pulse Width
PW 250
40
ns Within PWD limit
Data Rate
1 25 Mbps Within PWD limit
Propagation Delay
Pulse Width Distortion
Change vs. Temperature
tPHL, tPLH
PWD
55 80
34 44 54
ns
50% input to 50% output
10 25
5
25
3
ns
ps/°C
|tPLH − tPHL|
Propagation Delay Skew1
Channel Matching
tPSK
20 10 ns
Codirectional
Opposing Direction
Jitter
tPSKCD
tPSKOD
25
30
2
25
39
2
ns
ns
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.
Table 8.
Parameter
SUPPLY CURRENT
ADuM7240
ADuM7241
Symbol
1 Mbps—A, C Grades
Min Typ
Max
IDD1 2.2 2.8
IDD2 1.2 1.5
IDD1 1.9 2.3
IDD2 1.4 1.6
25 Mbps—C Grade
Min Typ
Max Unit
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14
1.8
9.5
6.1
18 mA
2.3 mA
12 mA
7.2 mA
Test Conditions/Comments
Table 9. For All Models
Parameter
DC SPECIFICATIONS
Logic High Input Threshold
Logic Low Input Threshold
Logic High Output Voltages
Symbol
VIH
VIL
VOH
Logic Low Output Voltages
VOL
Input Current per Channel
Supply Current per Channel
Quiescent Input Supply Current
Quiescent Output Supply Current
Dynamic Input Supply Current
Dynamic Output Supply Current
AC SPECIFICATIONS
Output Rise/Fall Time
Common-Mode Transient Immunity1
II
IDDI(Q)
IDDO(Q)
IDDI(D)
IDDO(D)
tR/tF
|CM|
Refresh Rate
fr
Min Typ Max
0.7 VDDx
VDDx − 0.1
VDDx− 0.4
−10
VDDx
VDDx − 0.3
0.0
0.2
+0.01
0.3 VDDx
0.1
0.4
+10
1.0 1.2
0.59 0.67
0.25
0.02
2.5
15 25
600
Unit Test Conditions/Comments
V
V
V
V
V
V
µA
mA
mA
mA/Mbps
mA/Mbps
IOx = −20 µA, VIx = VIxH
IOx = −4 mA, VIx = VIxH
IOx = 20 µA, VIx = VIxL
IOx = 4 mA, VIx = VIxL
0 V ≤ VIx ≤ VDDx
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 VO > 0.8 VDDx. The common-mode voltage slew rates apply to both
rising and falling common-mode voltage edges.
Rev. 0 | Page 5 of 16
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
Data Sheet
10
8
6
5V
4
3V
2
0
0 5 10 15 20 25 30
DATA RATE (Mbps)
Figure 12. Typical ADuM7241 VDD2 Supply Current vs. Data Rate
for 5 V and 3 V Operation
ADuM7240/ADuM7241
www.DataSheet.co.kr
Rev. 0 | Page 11 of 16
Datasheet pdf - http://www.DataSheet4U.net/
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