adum5240 Analog Devices, Inc., adum5240 Datasheet

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adum5240

Manufacturer Part Number
adum5240
Description
Dual-channel Isolators With Integrated Dc/dc Converter, 50 Mw
Manufacturer
Analog Devices, Inc.
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
adum5240ARZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
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:
High common-mode transient immunity: > 25 kV/µs
Safety and regulatory approvals (pending)
GND
Figure 1. ADuM5240 Functional Block
Diagram
Rev. PrN
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.
Preliminary Technical Data
3 ns maximum pulse-width distortion
3 ns maximum channel-to-channel matching
70 ns maximum propagation delay
UL recognition
CSA component acceptance notice #5A
VDE certificate of conformity
V
V
V
DD
IA
IB
2500 V rms for 1 minute per UL 1577
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
DIN EN 60950 (VDE 0805): 2001-12; DIN EN 60950: 2000
V
1
2
3
4
IORM
= 425 V peak
ENCODE
ENCODE
osc.
DECODE
DECODE
rect.
8
7
6
5
V
V
V
GND
ISO
OA
OB
ISO
GND
Figure 2. ADuM5241 Functional Block
Diagram
FUNCTIONAL BLOCK DIAGRAM
November 17, 2006
V
V
V
OA
DD
IB
1
2
3
4
DECODE
ENCODE
osc.
Integrated DC/DC Converter, 50 mW
ADuM5240/ADuM5241/ADuM5242
GENERAL DESCRIPTION
The ADuM524x
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
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
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
Protected by U.S. Patents 5,952,849 6,873,065 and 7,075,329 Other patents
pending.
ENCODE
DECODE
rect.
Dual-Channel Isolators with
®
technology is used both for the isolation of the logic
8
7
6
5
1
V
V
V
GND
are dual-channel digital isolators having an
ISO
IA
OB
© 2006 Analog Devices, Inc. All rights reserved.
ISO
GND
GND
Figure 3. ADuM5242 Functional Block
Diagram
V
V
V
V
V
V
OA
OA
OB
OB
DD
DD
1
1
2
2
3
3
4
4
DECODE
DECODE
DECODE
DECODE
osc.
osc.
www.analog.com
ENCODE
ENCODE
ENCODE
ENCODE
rect.
rect.
8
8
7
7
6
6
5
5
V
V
V
V
V
V
GND
GND
ISO
ISO
IA
IA
IB
IB
ISO
ISO

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adum5240 Summary of contents

Page 1

... DECODE IB GND 4 5 Figure 1. ADuM5240 Functional Block Diagram Rev. PrN 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. ...

Page 2

... Input Supply Current ADuM5240 ADuM5241 ADuM5242 2 Input Supply Current, V ISO ADuM5240 ADuM5241 ADum5242 10 Mbps 2 Input Supply Current ADuM5240 ADuM5241 ADum5242 2 Input Supply Current, V ISO ADuM5240 ADuM5241 ADuM5242 4 Enable Threshold Disable Threshold 4 Input Currents Logic High Input Threshold Logic Low Input Threshold ...

Page 3

... PHL PLH Symbol Min Typ Max I-O C 1.0 I-O C 4.0 I θ 150 JA Rev. PrN | Page ADuM5240/ADuM5241/ADuM5242 Unit Test Conditions pF, CMOS signal levels L Mbps pF, CMOS signal levels pF, CMOS signal levels pF, CMOS signal levels ...

Page 4

... ADuM5240/ADuM5241/ADuM5242 REGULATORY INFORMATION The ADuM5240/5241/5242 will be approved by the following organizations upon product release: Table 3. UL (pending) Recognized under 1577 Component Recognition Program 1 Basic insulation, 2500 V rms isolation rating File E214100 1 In accordance with UL1577, each ADuM524x is proof-tested by applying an insulation test voltage ≥ 3000 V rms for 1 second (current leakage detection limit = 5 µA). ...

Page 5

... V , DC/DC Conv. Enabled DC/DC Conv. Disabled DC/DC Conv. Disabled ISO Input Signal Rise and Fall Times Input Supply Slew Rate 1 All voltages are relative to their respective ground. Rev. PrN | Page ADuM5240/ADuM5241/ADuM5242 Symbol Characteristic I−IV I−III 40/105/ 425 IORM V 797 ...

Page 6

... Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Table 8. Truth Table, ADuM5240 V State DC/DC ...

Page 7

... Input Input Output Output Rev. PrN | Page ADuM5240/ADuM5241/ADuM5242 ...

Page 8

... (Not to Scale) (Not to Scale) GND GND GND GND ISO ISO Figure 5. ADuM5240 Pin Configuration Table 11. ADuM5240 Pin Function Descriptions Pin No. Mnemonic Function 1 V Supply Voltage for Isolator Side 1, DD1 4 5.5 V (DC/DC Enabled), 2 4.0 V (DC/DC Disabled Logic Input Logic Input B. ...

Page 9

... The ADuM524x digital isolators require no external interface circuitry for the logic interfaces. Power supply bypassing is strongly recommended at the input and output supply pins as shown in Figure 8. For the ADuM5240 and ADuM5241, a bypass capacitance (C ensure proper power-up. For all models bypass capacitance is recommended with the isolated side ...

Page 10

... Figure 9. 8-Lead Standard Small Outline Package [SOIC]—Narrow Body (R-8) Dimensions shown in millimeters (inches) ORDERING GUIDE Number of Inputs, Model V Side DD1 2,3 ADuM5240BRZ ADuM5241BRZ 1 ADuM5242BRZ R-8 = 8-lead narrow body SOIC. 2 Tape and reel are available. The addition of an “-RL7” suffix designates a 7” (1,000 units) tape and reel option. ...

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