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PDF ADuM1442 Data sheet ( Hoja de datos )
| Número de pieza | ADuM1442 | |
| Descripción | Micropower Quad-Channel Digital Isolators | |
| Fabricantes | Analog Devices | |
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Data Sheet
Micropower
Quad-Channel Digital Isolators
ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
Ultralow power operation
3.3 V operation (typical)
5.6 μA per channel quiescent current, refresh enabled
0.3 μA per channel quiescent current, refresh disabled
148 μA/Mbps per channel typical dynamic current
2.5 V operation (typical)
3.1 μA per channel quiescent current, refresh enabled
0.1 μA per channel quiescent current, refresh disabled
117 μA/Mbps per channel typical dynamic current
Small, 16-lead QSOP and 20-Lead SSOP
Bidirectional communication
Up to 2 Mbps data rate (NRZ)
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals
UL 1577 component recognition program
2500 V rms for 1 minute per UL 1577 QSOP package
3750V rms for 1 minute per UL 1577 SSOP package
CSA Component Acceptance Notice 5A
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 565 VPEAK QSOP package
VIORM = 849 VPEAK SSOP package
IECEx and ATEX intrinsic safety
Sira 0518 II 1G Ex ia IIC Ga
APPLICATIONS
General-purpose, low power multichannel isolation
1 MHz, low power peripheral interface (SPI)
4 mA to 20 mA loop process controls
GENERAL DESCRIPTION
The ADuM1440/ADuM1441/ADuM1442/ADuM1445/
ADuM1446/ADuM14471 are micropower, 4-channel digital
isolators based on the Analog Devices, Inc., iCoupler® technology.
Combining high speed, complementary metal oxide semiconductor
(CMOS) and monolithic air core transformer technologies,
these isolation components provide outstanding performance
characteristics superior to the alternatives, such as optocoupler
devices. As shown in Figure 3, in standard operating mode,
when ENx = 0 (internal refresh enabled), the current per channel is
less than 10 μA. When ENx = 1 (internal refresh disabled), the
current per channel drops to less than 1 μA.
VDD1 1
GND1 2
VIA 3
ADuM144x
ENCODE
VIB 4
ENCODE
QSOP
DECODE
DECODE
VIC/VOC 5
ENCODE
DECODE
VID/VOD 6
EN1 7
GND1 8
ENCODE
DECODE
Figure 1.
16 VDD2
15 GND2
14 VOA
13 VOB
12 VOC/VIC
11 VOD/VID
10 EN2
9 GND2
VDD1 1
GND1 2
VIA 3
ADuM144x
ENCODE
VIB 4
ENCODE
DECODE
DECODE
VIC/VOC 5
ENCODE
DECODE
VID/VOD 6
EN1 7
NIC 8
ENCODE
DECODE
NIC 9
GND1 10
Figure 2.
20 VDD2
19 GND2
18 VOA
17 VOB
16 VOC/VIC
15 VOD/VID
14 EN2
13 NIC
12 NIC
11 GND2
freeing almost 70% of board space compared to isolators packages
in wide body SOIC packages.
The devices withstand high isolation voltages and meet regulatory
requirements, such as UL and CSA standards. In addition to the
space savings, the ADuM1440/ADuM1441/ADuM1442/
ADuM1445/ADuM1446/ADuM1447 operate with supplies as
low as 2.25 V.
Despite the low power consumption, all models of the ADuM1440/
ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447
provide low, pulse width distortion at <8 ns. In addition, every
model has an input glitch filter to protect against extraneous
noise disturbances.
1000
100
10
ENx = 0
1 ENx = 1
The ADuM1440/ADuM1441/ADuM1442/ADuM1445/
ADuM1446/ADuM1447 family of quad 2.5 kV digital isolation
devices are packaged in a small 16-lead QSOP and 20-lead SSOP,
1 Protected by U.S. Patents 5,952,849, 6,873,065, 7,075,329, 6,262,600. Other patents pending.
0.1
0.1
1
10
100
1000
10000
DATA RATE (kbps)
Figure 3. Typical Total Supply Current per Channel (VDDx = 3.3 V)
Rev. E
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 ©2013–2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447
ELECTRICAL CHARACTERISTICS—2.5 V OPERATION
All typical specifications are at TA = 25°C, VDD1 = VDD2 = 2.5 V. Minimum/maximum specifications apply over the entire recommended
operating range of 2.25 V ≤ VDD1 ≤ 2.75 V, 2.25 V ≤ VDD2 ≤ 2.75 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 4.
Parameter
SWITCHING SPECIFICATIONS
Data Rate
Propagation Delay
Change vs. Temperature
Pulse-Width Distortion
Minimum Pulse Width
Propagation Delay Skew1
Channel Matching
Codirectional
Opposing Direction
Symbol
tPHL, tPLH
PWD
PW
tPSK
tPSKCD
tPSKOD
Min Typ Max
2
112 180
280
12
500
10
10
30
Unit
Mbps
ns
ps/°C
ns
ns
ns
ns
ns
Test Conditions/Comments
Within PWD limit
50% input to 50% output
|tPLH − tPHL|
Within PWD limit
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 5.
Parameter
Symbol
Min Typ Max Unit Test Conditions/Comments
SUPPLY CURRENT
2 Mbps, no load
ADuM1440/ADuM1445
ADuM1441/ADuM1446
ADuM1442/ADuM1447
IDD1
IDD2
IDD1
IDD2
IDD1
IDD2
623 800
337 500
552 750
409 750
480 750
480 750
µA
µA
µA
µA
µA
µA
ENX = 0 V, VIH = VDD, VIL = 0 V
ENX = 0 V, VIH = VDD, VIL = 0 V
ENX = 0 V, VIH = VDD, VIL = 0 V
ENX = 0 V, VIH = VDD, VIL = 0 V
ENX = 0 V, VIH = VDD, VIL = 0 V
ENX = 0 V, VIH = VDD, VIL = 0 V
Rev. E | Page 5 of 25
5 Page 
Data Sheet
ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447
Table 15. 20-Lead SSOP (RS-20)
Description
Installation Classification per DIN VDE 0110
For Rated Mains Voltage ≤ 150 V rms
For Rated Mains Voltage ≤ 300 V rms
For Rated Mains Voltage ≤ 400 V rms
Climatic Classification
Pollution Degree per DIN VDE 0110, Table 1
Maximum Working Insulation Voltage
Input-to-Output Test Voltage, Method b1
Input-to-Output Test Voltage, Method a
After Environmental Tests Subgroup 1
After Input and/or Safety Test Subgroup 2
and Subgroup 3
Highest Allowable Overvoltage
Surge Isolation Voltage
Safety Limiting Values
Case Temperature
Total Power Dissipation at 25°C
Conditions
Symbol Characteristic Unit
VIORM × 1.875 = Vpd(m), 100% production test, tini = tm =
1 sec, partial discharge < 5 pC
VIORM
Vpd(m)
I to IV
I to IV
I to III
40/105/21
2
849
1592
VPEAK
VPEAK
VIORM × 1.5 = Vpd(m), tini = 60 sec, tm = 10 sec, partial
discharge < 5 pC
VIORM × 1.2 = Vpd(m),tini = 60 sec, tm = 10 sec, partial
discharge < 5 pC
VPEAK = 10 kV, 1.2 µs rise time, 50µs, 50% fall time
Maximum value allowed in the event of a failure
(see Figure 4)
Vpd(m)
Vpd(m)
VIOTM
VIOSM
1273
1018
6000
6000
TS 150
IS1 2.5
VPEAK
VPEAK
VPEAK
VPEAK
°C
W
Insulation Resistance at TS
VIO = 500 V
RS >109
Ω
INTRINSIC SAFETY
The ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447 support intrinsic safety for IS to IS applications under
IEC 60079-11, and carry ATEX and IECEx certifications. These devices do not currently support IS to non IS galvanic isolation
applications due to the minimum insulation requirements of IEC60079-11.
Product Conformity Certificate
Sira 16ATEX2265U and IECEx SIR 16.0091U
Special Conditions for Safe Use
These components are certified to comply with IEC 60079-11:2011. When one of these components is used in equipment, the component
is to be fitted on a PCB inside a suitable enclosure and recertified as equipment. The creepage and clearance distances across the isolating
component have been evaluated, but the distances to other circuitry remain the responsibility of the user of the certified equipment.
This assembly is an isolating component between separate intrinsically safe circuits. It is recommended that the assembly be connected to
suitably certified intrinsically safe circuits considering the entity parameters in Table 16.
Table 16. IS Entity Parameters
Package Type Entity Parameters Side 11
16-Lead QSOP Ui = 42 V, Ii = 275 mA, Pi = 1.3W, Li = 0, Ci = 4pF
20-Lead SSOP
Ui = 42 V, Ii = 275 mA, Pi = 1.3W, Li = 0, Ci = 4pF
Entity Parameters Side 2
Ui = 42 V, Ii = 275 mA, Pi = 1.3W, Li = 0, Ci = 4pF
Ui = 42 V, Ii = 275 mA, Pi = 1.3W. Li = 0, Ci = 4pF
1 Li is defined as input inductance, Ci is input capacitance, Pi is input power, Ui is input voltage, and Ii is input current.
The components (for example, digital isolators) being certified have the following safety ratings listed in Table 17. The temperature class is
determined based on Table 17.
Table 17. Temperature Class Information
Package Type
16-Lead QSOP
20-Lead SSOP
Maximum Power Side 1 (W)
1.3
1.3
Maximum Power Side 2 (W)
1.3
1.3
Maximum Component
Temperature (°C)
189.8
218
Ambient Temperature (°C)
−40°C to +85°C
−40°C to +85°C
Rev. E | Page 11 of 25
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet ADuM1442.PDF ] | |
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