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PDF ADUM5240 Data sheet ( Hoja de datos )
| Número de pieza | ADUM5240 | |
| Descripción | (ADUM5240 - ADUM5242) Dual-Channel Isolators | |
| Fabricantes | Analog Devices | |
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Preliminary Technical Data
Dual-Channel Isolators with
Integrated DC/DC Converter, 50 mW
ADuM5240/ADuM5241/ADuM5242
FEATURES
Integrated isolated DC/DC converter
Regulated 5V/10 mA output
Dual dc-to-10 Mbps (NRZ) signal isolation channels
Narrow body SOIC 8-lead package
High temperature operation: 105°C
Precise timing characteristics:
3 ns maximum pulse-width distortion
3 ns maximum channel-to-channel matching
70 ns maximum propagation delay
High common-mode transient immunity: > 25 kV/μs
Safety and regulatory approvals (pending)
UL recognition
2500 V rms for 1 minute per UL 1577
CSA component acceptance notice #5A
VDE certificate of conformity
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
DIN EN 60950 (VDE 0805): 2001-12; DIN EN 60950: 2000
VIORM = 425 V peak
GENERAL DESCRIPTION
The ADuM524x1 are dual-channel digital isolators having an
integrated DC/DC converter. Based on Analog Devices’
iCoupler® technology, the DC/DC converter provides up to
50 mW of regulated, isolated power at +5V. This eliminates the
need for a separate isolated DC/DC converter in low-power
isolated designs. Analog Devices’ chip-scale transformer
iCoupler® technology is used both for the isolation of the logic
signals as well as for the DC/DC converter. The result is a small
form-factor total-isolation solution.
ADuM524x units may be used in combination or with other
iCoupler products to achieve greater channel counts.
The ADuM524x isolators provide two independent isolation
channels in a variety of channel configurations and data rates
(see Ordering Guide) operating off a 5V input supply.
1 Protected by U.S. Patents 5,952,849 6,873,065 and 7,075,329 Other patents
pending.
FUNCTIONAL BLOCK DIAGRAM
VDD 1
osc.
rect.
8 VISO
VDD 1
osc.
rect.
8 VISO
VDD 1
osc.
rect.
8 VISO
VIA 2
ENCODE
DECODE
7 VOA
VOA 2
DECODE
ENCODE
7 VIA
VOA 2
DECODE
ENCODE
7 VIA
VIB 3
ENCODE
DECODE
6 VOB
VIB 3
ENCODE
DECODE
6 VOB
VOB 3
DECODE
ENCODE
6 VIB
GND 4
5 GNDISGO ND 4
5 GNDISGO ND 4
5 GNDISO
Figure 1. ADuM5240 Functional Block
Diagram
Figure 2. ADuM5241 Functional Block
Diagram
Figure 3. ADuM5242 Functional Block
Diagram
Rev. PrN
November 17, 2006
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. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2006 Analog Devices, Inc. All rights reserved.
1 page  
Preliminary Technical Data
ADuM5240/ADuM5241/ADuM5242
DIN EN 60747-5-2 (VDE 0884 PART 2) INSULATION CHARACTERISTICS
Table 5.
Description
Installation Classification per DIN VDE 0110
For Rated Mains Voltage ≤ 150 V rms
For Rated Mains Voltage ≤ 300 V rms
Climatic Classification
Pollution Degree (DIN VDE 0110, Table 1)
Maximum Working Insulation Voltage
Input to Output Test Voltage, Method b1
VIORM × 1.875 = VPR, 100% Production Test, tm = 1 sec, Partial Discharge < 5 pC
Input to Output Test Voltage, Method a
After Environmental Tests Subgroup 1
VIORM × 1.6 = VPR, tm = 60 sec, Partial Discharge < 5 pC
After Input and/or Safety Test Subgroup 2/3
VIORM × 1.2 = VPR, tm = 60 sec, Partial Discharge < 5 pC
Highest Allowable Overvoltage (Transient Overvoltage, tTR = 10 sec)
Safety-Limiting Values (maximum value allowed in the event of a failure; also see the thermal
derating curve, Figure 4)
Case Temperature
Side 1 Current
Side 2 Current
Insulation Resistance at TS, VIO = 500 V
Symbol Characteristic Unit
VIORM
VPR
I−IV
I−III
40/105/21
2
425
797
V peak
V peak
VPR
680 V peak
510
VTR 4000
V peak
V peak
TS 150
IS1 160
IS2 170
RS >109
°C
mA
mA
Ω
Note that the “*” marking on the package denotes DIN EN 60747-5-2 approval for a 425 V peak working voltage.
This isolator is suitable for basic isolation only within the safety limit data. Maintenance of the safety data is ensured by protective circuits.
[Figure to be added]
RECOMMENDED OPERATING CONDITIONS
Figure 4. Thermal Derating Curve, Dependence of Safety
Limiting Values on Case Temperature, per DIN EN 60747-5-
2
Table 6.
Parameter
Operating Temperature
Supply Voltages1
VDD, DC/DC Conv. Enabled
VDD, DC/DC Conv. Disabled
VISO, DC/DC Conv. Disabled
Input Signal Rise and Fall Times
Input Supply Slew Rate
Symbol
TA
VDD
VDD
VISO
Min Max Unit
−40 +105 °C
4.5 5.5
2.7 4.0
2.7 5.5
1.0
10
V
V
V
ms
V/ms
1 All voltages are relative to their respective ground.
Rev. PrN | Page 5 of 10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet ADUM5240.PDF ] | |
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