ADUM5240_12 Datasheet, PDF (1/16 Pages) Analog Devices – Dual-Channel Isolators with isoPower Integrated DC-to-DC Converter, 50 mW

Data Sheet
Dual-Channel Isolators with isoPower
Integrated DC-to-DC Converter, 50 mW
ADuM5240/ADuM5241/ADuM5242
FEATURES
Integrated isolated dc-to-dc converter
Regulated 5 V/10 mA output
Dual dc to 1 Mbps (NRZ) signal isolation channels
Narrow-body, 8-lead SOIC package
RoHS compliant
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
UL recognition
2500 V rms for 1 minute, per UL 1577
CSA Component Acceptance Notice #5A
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 560 V peak
GENERAL DESCRIPTION
The ADuM524x¹ are dual-channel digital isolators with isoPower®
integrated, isolated power. Based on the Analog Devices, Inc.,
iCoupler® technology, a chip scale dc-to-dc converter provides
up to 50 mW of regulated, isolated power at 5 V, which eliminates
the need for a separate isolated dc-to-dc converter in low power
isolated designs. The Analog Devices chip scale transformer
iCoupler technology is used both for the isolation of the logic
signals as well as for the dc-to-dc converter. The result is a small
form factor, total isolation solution.
The ADuM524x isolators provide two independent isolation
channels in a variety of channel configurations, operating from
a 5 V input supply. ADuM524x units can be used in combination
with other iCoupler products to achieve greater channel counts.
FUNCTIONAL BLOCK DIAGRAMS
V_DD 1
V_IA 2
V_IB 3
GND 4
OSC.
RECT. REG.
8 V_ISO
ENCODE
DECODE
7 V_OA
ENCODE
DECODE
6 V_OB
Figure 1. ADuM5240
5 GND_ISO
V_DD 1
V_OA 2
V_IB 3
GND 4
OSC.
RECT. REG.
8 V_ISO
DECODE
ENCODE
7 V_IA
ENCODE
DECODE
6 V_OB
Figure 2. ADuM5241
5 GND_ISO
V_DD 1
V_OA 2
V_OB 3
GND 4
OSC.
RECT. REG.
8 V_ISO
DECODE
ENCODE
7 V_IA
DECODE
ENCODE
6 V_IB
Figure 3. ADuM5242
5 GND_ISO
1 _{Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329.}
Rev. B
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