ADUM2280 Datasheet, PDF (1/20 Pages) Analog Devices – 5 kV RMS Dual Channel Digital Isolators

Data Sheet
5 kV RMS Dual Channel Digital Isolators
ADuM2280/ADuM2281/ADuM2285/ADuM2286
FEATURES
High isolation voltage: 5000 V rms
Up to 100 Mbps data rate
Low propagation delay: 24 ns maximum
Low dynamic power consumption
Bidirectional communication
3 V to 5 V level translation
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/μs
Default high output: ADuM2280/ADuM2281
Default low output: ADuM2285/ADuM2286
16-lead SOIC wide body enhanced creepage package
Safety and regulatory approvals (pending)
UL recognition: 5000 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
IEC 60601-1: 250 V rms (reinforced)
IEC 60950-1: 400 V rms (reinforced)
VDE Certificate of Conformity
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
VIORM = 846 V peak
Pin-compatible with ADuM220x and ADuM221x families
APPLICATIONS
General-purpose, high voltage, multichannel isolation
Medical equipment
Power supplies
RS-232/RS-422/RS-485 transceiver isolation
The ADuM2280/ADuM2281/ADuM2285/ADuM2286¹ (also
referred to as ADuM228x in this data sheet) are 5 kV rms dual-
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 and other integrated
couplers.
With propagation delay at 24 ns maximum, pulse width
distortion is less than 2 ns for C grade. Channel-to-channel
matching is tight at 5 ns for C grade. The ADuM228x are
available in two channel configurations with three different
data rates up to 100 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 a voltage translation functionality
across the isolation barrier. Unlike other optocoupler
alternatives, the ADuM228x isolators have a patented refresh
feature that ensures dc correctness in the absence of input logic
transitions. When power is first applied or is not yet applied to
the input side, the ADuM2280 and ADuM2281 have a default
high output and the ADuM2285 and ADuM2286 have a default
low output.
GENERAL DESCRIPTION
FUNCTIONAL BLOCK DIAGRAMS
GND₁ 1
NC 2
PIN 1
INDICATOR
ADuM2280/ ^{16 GND2}
ADuM2285 15 NC
V_DD1 3
V_IA 4
ENCODE
DECODE
14 V_DD2
13 _VOA
V_IB 5
NC 6
ENCODE
DECODE
12 V_OB
11 NC
GND₁ 7
10 NC
NC 8
NC = NO CONNECT
9 GND₂
Figure 1. ADuM2280/ADuM2285
Pin-Compatible with ADuM2200/ADuM2210
GND₁ 1
NC 2
PIN 1
INDICATOR
ADuM2281/ ^{16 GND2}
ADuM2286 15 NC
V_DD1 3
V_OA 4
DECODE
ENCODE
14 V_DD2
13 _VIA
V_IB 5
NC 6
ENCODE
DECODE
12 V_OB
11 NC
GND₁ 7
10 NC
NC 8
NC = NO CONNECT
9 GND₂
Figure 2. ADuM2281/ADuM2286
Pin-Compatible with ADuM2201/ADuM2211
1 _{Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.}
Rev. 0
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