ADUM1210_15 Datasheet, PDF (1/20 Pages) Analog Devices – Dual-Channel Digital Isolator

Data Sheet
FEATURES
Narrow body, RoHS-compliant, 8-lead SOIC
Low power operation
5 V operation
1.1 mA per channel maximum @ 0 Mbps to 2 Mbps
3.7 mA per channel maximum @ 10 Mbps
3 V operation
0.8 mA per channel maximum @ 0 Mbps to 2 Mbps
2.2 mA per channel maximum @ 10 Mbps
3 V/5 V level translation
High temperature operation: 105°C
High data rate: dc to 10 Mbps (NRZ)
Precise timing characteristics
3 ns maximum pulse width distortion
3 ns maximum channel-to-channel matching
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
APPLICATIONS
Size-critical multichannel isolation
SPI interface/data converter isolation
RS-232/RS-422/RS-485 transceiver isolation
Digital field bus isolation
Gate drive interface
Dual-Channel Digital Isolator
ADuM1210
GENERAL DESCRIPTION
The ADuM1210¹ is a dual-channel, digital isolator based on
Analog Devices, Inc., iCoupler® technology. Combining high
speed CMOS and monolithic transformer technology, this
isolation component provides 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 concerns of the typical optocoupler regarding
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 iCoupler products. Furthermore,
iCoupler devices consume one-tenth to one-sixth the power of
optocouplers at comparable signal data rates.
The ADuM1210 isolator provides two independent isolation
channels operable with the supply voltage on either side,
ranging from 2.7 V to 5.5 V. This provides compatibility with
lower voltage systems and enables voltage translation
functionality across the isolation barrier. In addition, the
ADuM1210 provides low pulse width distortion (<3 ns) and
tight channel-to-channel matching (<3 ns). Unlike other opto-
coupler alternatives, the ADuM1210 isolator has a patented
refresh feature that ensures dc correctness in the absence of
input logic transitions and during power-up/power-down
conditions. Furthermore, as an alternative to the ADuM1200
dual-channel digital isolator that defaults to an output high
condition, the ADuM1210 outputs default to a logic low state
when input power is off.
1 _{Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329.}
FUNCTIONAL BLOCK DIAGRAM
V_DD1 1
V_IA 2
V_IB 3
GND₁ 4
ENCODE
ENCODE
DECODE
DECODE
Figure 1.
8 V_DD2
7 V_OA
6 V_OB
5 GND₂
Rev. D
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