ADUM1411_15 Datasheet, PDF (1/24 Pages) Analog Devices – Quad-Channel Digital Isolators

Data Sheet
Quad-Channel Digital Isolators
ADuM1410/ADuM1411/ADuM1412
FEATURES
Low power operation
5 V operation
1.3 mA per channel maximum at 0 Mbps to 2 Mbps
4.0 mA per channel maximum at 10 Mbps
3 V operation
0.8 mA per channel maximum at 0 Mbps to 2 Mbps
1.8 mA per channel maximum at 10 Mbps
Bidirectional communication
3 V/5 V level translation
High temperature operation: 105°C
Up to 10 Mbps data rate (NRZ)
Programmable default output state
High common-mode transient immunity: >25 kV/μs
16-lead, RoHS-compliant, SOIC wide body package
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
TÜV approval: IEC/EN 60950-1
APPLICATIONS
General-purpose multichannel isolation
SPI interface/data converter isolation
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
GENERAL DESCRIPTION
The ADuM141x¹ are four-channel digital isolators based on
Analog Devices, Inc., iCoupler® technology. Combining high
speed CMOS and monolithic air core transformer technologies,
these isolation components provide outstanding performance
characteristics superior to alternatives such as optocoupler devices.
By avoiding the use of LEDs and photodiodes, iCoupler devices
remove the design difficulties commonly associated with opto-
couplers. The usual concerns that arise with optocouplers, such
as uncertain current transfer ratios, nonlinear transfer functions,
and temperature and lifetime effects, are eliminated with the simple
iCoupler digital interfaces and stable performance characteristics.
The need for external drivers and other discrete components is
eliminated with these iCoupler products. Furthermore, iCoupler
1 _{Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329.}
Rev. J
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FUNCTIONAL BLOCK DIAGRAMS
V_DD1 1
GND₁ 2
V_IA 3
ADuM1410
ENCODE
V_IB 4
ENCODE
DECODE
DECODE
V_IC 5
ENCODE
DECODE
V_ID 6
DISABLE 7
GND₁ 8
ENCODE
DECODE
Figure 1. ADuM1410
16 V_DD2
15 GND₂
14 V_OA
13 V_OB
12 V_OC
11 V_OD
10 CTRL₂
9 GND₂
V_DD1 1
GND₁ 2
V_IA 3
ADuM1411
ENCODE
V_IB 4
ENCODE
DECODE
DECODE
V_IC 5
ENCODE
DECODE
V_OD 6
CTRL₁ 7
GND₁ 8
DECODE
ENCODE
Figure 2. ADuM1411
16 V_DD2
15 GND₂
14 V_OA
13 V_OB
12 V_OC
11 V_ID
10 CTRL₂
9 GND₂
V_DD1 1
GND₁ 2
V_IA 3
ADuM1412
ENCODE
DECODE
16 V_DD2
15 GND₂
14 V_OA
V_IB 4
ENCODE
DECODE
13 V_OB
V_OC 5
DECODE
ENCODE
12 V_IC
V_OD 6
CTRL₁ 7
GND₁ 8
DECODE
ENCODE
11 V_ID
10 CTRL₂
9 GND₂
Figure 3. ADuM1412
devices consume one-tenth to one-sixth the power of optocou-
plers at comparable signal data rates.
The ADuM141x isolators provide four independent isolation
channels in a variety of channel configurations and data rates
(see the Ordering Guide) up to 10 Mbps. 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 voltage translation functionality across the isolation
barrier. All products also have a default output control pin. This
allows the user to define the logic state the outputs are to adopt
in the absence of the input power. Unlike other optocoupler
alternatives, the ADuM141x isolators have a patented refresh
feature that ensures dc correctness in the absence of input logic
transitions and during power-up/power-down conditions.
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