ADUM1310_08 Datasheet, PDF (1/24 Pages) Analog Devices – Triple-Channel Digital Isolators

Triple-Channel Digital Isolators
ADuM1310/ADuM1311
FEATURES
Low power operation
5 V operation
1.7 mA per channel maximum @ 0 Mbps to 2 Mbps
4.0 mA per channel maximum @ 2 Mbps to 10 Mbps
3 V operation
1.0 mA per channel maximum @ 0 Mbps to 2 Mbps
2.1 mA per channel maximum @ 2 Mbps to 10 Mbps
Bidirectional communication
3 V/5 V level translation
Schmitt trigger inputs
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
8.1 mm external creepage
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 working voltage
APPLICATIONS
General-purpose multichannel isolation
SPI interface/data converter isolation
RS-232/RS-422/RS-485 transceiver
Industrial field bus isolation
GENERAL DESCRIPTION
The ADuM131x¹ are 3-channel digital isolators based on
Analog Devices, Inc. iCoupler® technology. Combining high
speed CMOS and monolithic air core transformer technology,
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 typical optocoupler concerns regarding uncertain
current transfer ratios, maximum operating 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 devices
consume one-tenth to one-sixth the power of optocouplers at
comparable signal data rates. The iCoupler also offers higher
channel densities and more options for channel directionality.
Rev. G
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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FUNCTIONAL BLOCK DIAGRAMS
V_DD1 1 ADuM1310
GND₁ 2
V_IA 3
ENCODE
V_IB 4
ENCODE
V_IC 5
ENCODE
NC 6
DECODE
DECODE
DECODE
16 V_DD2
15 GND₂
14 V_OA
13 V_OB
12 V_OC
11 NC
DISABLE 7
GND₁ 8
Figure 1. ADuM1310
10 CTRL₂
9 GND₂
V_DD1 1 ADuM1311
GND₁ 2
V_IA 3
ENCODE
V_IB 4
ENCODE
V_OC 5
DECODE
NC 6
DECODE
DECODE
ENCODE
CTRL₁ 7
GND₁ 8
Figure 2. ADuM1311
16 V_DD2
15 GND₂
14 V_OA
13 V_OB
12 V_IC
11 NC
10 CTRL₂
9 GND₂
The ADuM131x isolators provide three independent isolation
channels in a variety of channel configurations and data rates
up to 10 Mbps (see the Ordering Guide). 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 allow the user to predetermine the default
output state in the absence of input VDD1 power with a simple
control pin. Unlike other optocoupler alternatives, the ADuM131x
isolators have a patented refresh feature that ensures dc correctness
in the absence of input logic transitions and during power-up/
power-down conditions.
1 _{Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents}
pending.
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