ADUM3400 Datasheet, PDF (1/24 Pages) Analog Devices – Quad-Channel, Digital Isolators, Enhanced System-Level ESD Reliability

Quad-Channel, Digital Isolators,
Enhanced System-Level ESD Reliability
ADuM3400/ADuM3401/ADuM3402
FEATURES
Enhanced system-level ESD performance per IEC 61000-4-x
Low power operation
5 V operation
1.4 mA per channel maximum @ 0 Mbps to 2 Mbps
4.3 mA per channel maximum @ 10 Mbps
34 mA per channel maximum @ 90 Mbps
3 V operation
0.9 mA per channel maximum @ 0 Mbps to 2 Mbps
2.4 mA per channel maximum @ 10 Mbps
20 mA per channel maximum @ 90 Mbps
Bidirectional communication
3 V/5 V level translation
High temperature operation: 105°C
High data rate: dc to 90 Mbps (NRZ)
Precise timing characteristics
2 ns maximum pulse-width distortion
2 ns maximum channel-to-channel matching
High common-mode transient immunity: >25 kV/μs
Output enable function
16-lead SOIC wide body, Pb-free 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 EN 60747-5-2 (VDE 0884 Part 2): 2003-01
DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000
VIORM = 560 V peak
APPLICATIONS
General-purpose multichannel isolation
SPI® interface/data converter isolation
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
GENERAL DESCRIPTION
The ADuM340x¹ are 4-channel digital isolators based on
Analog Devices’ 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.
iCoupler devices remove the design difficulties commonly
associated with optocouplers. Typical optocoupler concerns
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 these iCoupler products.
Furthermore, iCoupler devices consume one-tenth to one-sixth the
power of optocouplers at comparable signal data rates.
The ADuM340x isolators provide three independent isolation
channels in a variety of channel configurations and data rates
(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 a
voltage translation functionality across the isolation barrier. The
ADuM340x isolators have a patented refresh feature that ensures dc
correctness in the absence of input logic transitions and during
power-up/power-down conditions.
In comparison to the ADuM140x isolators, the ADuM340x
isolators contain various circuit and layout changes to provide
increased capability relative to system-level IEC 61000-4-x testing
(ESD/burst/surge). The precise capability in these tests for either
the ADuM140x or ADuM340x products is strongly determined by
the design and layout of the user’s board or module. For more
information, see Application Note AN-793, ESD/Latch-Up
Considerations with iCoupler Isolation Products.
1 _{Protected by U.S. Patents 5,952,849 and 6,873,065. Other patents pending.}
FUNCTIONAL BLOCK DIAGRAMS
V_DD1 1
GND₁ 2
V_IA 3
V_IB 4
ENCODE
ENCODE
DECODE
DECODE
16 V_DD2
15 GND₂
14 V_OA
13 V_OB
V_IC 5
V_ID 6
NC 7
GND₁ 8
ENCODE
ENCODE
DECODE
DECODE
12 V_OC
11 V_OD
10 V_E2
9 GND₂
Figure 1. ADuM3400 Functional Block Diagram
V_DD1 1
GND₁ 2
V_IA 3
V_IB 4
V_IC 5
V_OD 6
V_E1 7
GND₁ 8
ENCODE
ENCODE
ENCODE
DECODE
DECODE
DECODE
DECODE
ENCODE
16 V_DD2
15 GND₂
14 V_OA
13 V_OB
12 V_OC
11 V_ID
10 V_E2
9 GND₂
Figure 2. ADuM3401 Functional Block Diagram
V_DD1 1
GND₁ 2
V_IA 3
V_IB 4
V_OC 5
V_OD 6
V_E1 7
GND₁ 8
ENCODE
ENCODE
DECODE
DECODE
DECODE
DECODE
ENCODE
ENCODE
16 V_DD2
15 GND₂
14 V_OA
13 V_OB
12 V_IC
11 V_ID
10 V_E2
9 GND₂
Figure 3. ADuM3402 Functional Block Diagram
Rev. 0
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