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PDF ADuM2281 Data sheet ( Hoja de datos )
| Número de pieza | ADuM2281 | |
| Descripción | 5 kV RMS Dual Channel Digital Isolators | |
| Fabricantes | Analog Devices | |
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Data Sheet
5 kV RMS Dual Channel Digital Isolators
ADuM2280/ADuM2281/ADuM2285/ADuM2286
FEATURES
High isolation voltage: 5000 V rms
Up to 100 Mbps data rate
Low propagation delay: 24 ns maximum
Low dynamic power consumption
Bidirectional communication
3 V to 5 V level translation
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/μs
Default high output: ADuM2280/ADuM2281
Default low output: ADuM2285/ADuM2286
16-lead SOIC wide body enhanced creepage package
Safety and regulatory approvals (pending)
UL recognition: 5000 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
IEC 60601-1: 250 V rms (reinforced)
IEC 60950-1: 400 V rms (reinforced)
VDE Certificate of Conformity
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
VIORM = 846 V peak
Pin-compatible with ADuM220x and ADuM221x families
APPLICATIONS
General-purpose, high voltage, multichannel isolation
Medical equipment
Power supplies
RS-232/RS-422/RS-485 transceiver isolation
The ADuM2280/ADuM2281/ADuM2285/ADuM22861 (also
referred to as ADuM228x in this data sheet) are 5 kV rms dual-
channel digital isolators based on Analog Devices, Inc., iCoupler®
technology. Combining high speed CMOS and monolithic air
core transformer technology, these isolation components
provide outstanding performance characteristics superior to
alternatives, such as optocoupler devices and other integrated
couplers.
With propagation delay at 24 ns maximum, pulse width
distortion is less than 2 ns for C grade. Channel-to-channel
matching is tight at 5 ns for C grade. The ADuM228x are
available in two channel configurations with three different
data rates up to 100 Mbps (see the Ordering Guide). All models
operate with the supply voltage on either side ranging from
2.7 V to 5.5 V, providing compatibility with lower voltage
systems as well as enabling a voltage translation functionality
across the isolation barrier. Unlike other optocoupler
alternatives, the ADuM228x isolators have a patented refresh
feature that ensures dc correctness in the absence of input logic
transitions. When power is first applied or is not yet applied to
the input side, the ADuM2280 and ADuM2281 have a default
high output and the ADuM2285 and ADuM2286 have a default
low output.
GENERAL DESCRIPTION
FUNCTIONAL BLOCK DIAGRAMS
GND1 1
NC 2
PIN 1
INDICATOR
ADuM2280/ 16 GND2
ADuM2285 15 NC
VDD1 3
VIA 4
ENCODE
DECODE
14 VDD2
13 VOA
VIB 5
NC 6
ENCODE
DECODE
12 VOB
11 NC
GND1 7
10 NC
NC 8
NC = NO CONNECT
9 GND2
Figure 1. ADuM2280/ADuM2285
Pin-Compatible with ADuM2200/ADuM2210
GND1 1
NC 2
PIN 1
INDICATOR
ADuM2281/ 16 GND2
ADuM2286 15 NC
VDD1 3
VOA 4
DECODE
ENCODE
14 VDD2
13 VIA
VIB 5
NC 6
ENCODE
DECODE
12 VOB
11 NC
GND1 7
10 NC
NC 8
NC = NO CONNECT
9 GND2
Figure 2. ADuM2281/ADuM2286
Pin-Compatible with ADuM2201/ADuM2211
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
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
1 page  
Data Sheet
ADuM2280/ADuM2281/ADuM2285/ADuM2286
ELECTRICAL CHARACTERISTICS—MIXED 5 V/3 V OPERATION
All typical specifications are at TA = 25°C, VDD1 = 5 V, VDD2 = 3.0 V. Minimum/maximum specifications apply over the entire recom-
mended operation range: 4.5 V ≤ VDD1 ≤ 5.5 V, 2.7 V ≤ VDD2 ≤ 3.6 V; and −40°C ≤ TA ≤ 125°C, unless otherwise noted. Switching
specifications are tested with CL = 15 pF and CMOS signal levels, unless otherwise noted.
Table 7.
Parameter
SWITCHING SPECIFICATIONS
Pulse Width
Data Rate
Propagation Delay
Pulse Width Distortion
Change vs. Temperature
Propagation Delay Skew
Symbol
PW
tPHL, tPLH
PWD
tPSK
A Grade
B Grade
C Grade
Min Typ Max Min Typ Max Min Typ Max Unit
1000
7
40
1
50
10
3
38
10 ns
25 100 Mbps
39 13 20 26 ns
3 2 ns
1.5 ps/°C
16 12 ns
Channel Matching
Codirectional
tPSKCD
Opposing-Direction
tPSKOD
Jitter
7 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. Opposing-directional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on opposing sides of the isolation barrier.
Table 8.
5
10
2
1 Mbps—A, B, C Grades
Parameter
Symbol Min Typ Max
SUPPLY CURRENT
ADuM2280/ADuM2285
ADuM2281/ADuM2286
IDD1
IDD2
IDD1
IDD2
1.3 1.6
2.0 3.5
2.3 2.6
1.7 2.3
3
6
2
25 Mbps—B, C Grades
Min Typ Max
6.2 7.0
2.7 4.6
5.8 6.5
3.9 6.2
2
5
1
ns
ns
ns
100 Mbps—C Grades
Min Typ Max
20 25
4.8 9.0
16 19
11 15
Test Conditions
Within PWD limit
Within PWD limit
50% input to 50% output
|tPLH − tPHL|
Between any two units
at same operating
conditions
Unit Test Conditions
No load
mA
mA
mA
mA
Table 9. For All Models
Parameter
Symbol Min
Typ Max
Unit Test Conditions
DC SPECIFICATIONS
Logic High Input Threshold
VIH 0.7 VDDx
V
Logic Low Input Threshold
VIL
0.3 VDDx
V
Logic High Output Voltages
Logic Low Output Voltages
Input Current per Channel
Supply Current per Channel
VOH VDDx − 0.1
VDDx − 0.4
VOL
II −10
VDDx
VDDx − 0.2
0.0
0.2
+0.01
0.1
0.4
+10
V IOx = −20 µA, VIx = VIxH
V IOx = −4 mA, VIx = VIxH
V IOx = 20 µA, VIx = VIxL
V IOx = 4 mA, VIx = VIxL
µA 0 V ≤ VIx ≤ VDDx
Quiescent Input Supply Current
Quiescent Output Supply Current
Dynamic Input Supply Current
Dynamic Output Supply Current
Undervoltage Lockout
Positive VDDx Threshold
Negative VDDx Threshold
VDDx Hysteresis
IDDI(Q)
IDDO(Q)
IDDI(D)
IDDO(D)
VDDxUV+
VDDxUV−
VDDxUVH
0.54 0.75
1.2 2.0
0.09
0.02
2.6
2.4
0.2
mA
mA
mA/Mbps
mA/Mbps
V
V
V
AC SPECIFICATIONS
Output Rise/Fall Time
tR/tF
Common-Mode Transient Immunity1 |CM| 25
2.5
35
ns
kV/µs
10% to 90%
VIx = VDDx, VCM = 1000 V,
transient magnitude = 800 V
Refresh Period
tr 1.6
µs
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 20
5 Page 
Data Sheet
ADuM2280/ADuM2281/ADuM2285/ADuM2286
GND1 1
NC 2
VDD1
VOA
VIB
NC
3
4
5
6
GND1 7
NC 8
16 GND2
ADuM2281/ 15 NC
ADuM2286 14 VDD2
TOP VIEW 13 VIA
(Not to Scale) 12 VOB
11 NC
10 NC
9 GND2
NOTES:
1. NC = NO CONNECT.
2. PIN 1 AND PIN 7 ARE INTERNALLY CONNECTED, AND
CONNECTING BOTH TO GND1 IS RECOMMENDED.
3. PIN 9 AND PIN 16 ARE INTERNALLY CONNECTED, AND
CONNECTING BOTH TO GND2 IS RECOMMENDED.
Figure 5. ADuM2281/ADuM2286 Pin Configuration
Table 21. ADuM2281/ADuM2286 Pin Function Descriptions
Pin No. Mnemonic Description
1
GND1
Ground 1. Ground reference for Isolator Side 1.
2 NC
No internal connection.
3 VDD1 Supply Voltage for Isolator Side 1, 2.7 V to 5.5 V.
4 VOA
Logic Output A.
5 VIB
Logic Input B.
6 NC
No internal connection.
7
GND1
Ground 1. Ground reference for Isolator Side 1.
8 NC
No internal connection.
9
GND2
Ground 2. Ground reference for Isolator Side 2.
10 NC
No internal connection.
11 NC
No internal connection.
12 VOB
Logic Output B.
13 VIA
Logic Input A.
14 VDD2
Supply Voltage for Isolator Side 2, 2.7 V to 5.5 V.
15 NC
No internal connection.
16 GND2 Ground 2. Ground reference for Isolator Side 2.
For specific layout guidelines, refer to the AN-1109 Application Note, Recommendations for Control of Radiated Emissions with iCoupler
Devices.
Rev. 0 | Page 11 of 20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ADuM2281.PDF ] | |
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