ADUM1300ARW-RL Analog Devices Inc, ADUM1300ARW-RL Datasheet - Page 26
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ADUM1300ARW-RL
Manufacturer Part Number
ADUM1300ARW-RL
Description
IC DIGITAL ISOL 3-CH 16SOIC TR
Manufacturer
Analog Devices Inc
Series
iCoupler®r
Datasheet
1.ADUM1300BRWZ.pdf
(28 pages)
Specifications of ADUM1300ARW-RL
Rohs Status
RoHS non-compliant
Inputs - Side 1/side 2
3/0
Number Of Channels
3
Isolation Rating
2500Vrms
Voltage - Supply
2.7 V ~ 5.5 V
Data Rate
1Mbps
Propagation Delay
65ns
Output Type
Logic
Package / Case
16-SOIC (0.300", 7.5mm Width)
Operating Temperature
-40°C ~ 105°C
ADuM1300/ADuM1301
For example, at a magnetic field frequency of 1 MHz, the
maximum allowable magnetic field of 0.2 kgauss induces a
voltage of 0.25 V at the receiving coil. This is about 50% of the
sensing threshold and does not cause a faulty output transition.
Similarly, if such an event occurs during a transmitted pulse
(and has the worst-case polarity), it reduces the received pulse
from >1.0 V to 0.75 V—still well above the 0.5 V sensing
threshold of the decoder.
The preceding magnetic flux density values correspond to
specific current magnitudes at given distances from the
ADuM130x transformers. Figure 17 shows these allowable
current magnitudes as a function of frequency for selected
distances. The ADuM130x is extremely immune and can be
affected only by extremely large currents operated at a high
frequency very close to the component. For the 1 MHz example
noted, one would have to place a 0.5 kA current 5 mm away
from the ADuM130x to affect the operation of the component.
Note that at combinations of strong magnetic field and high
frequency, any loops formed by printed circuit board traces
could induce error voltages sufficiently large enough to trigger
the thresholds of succeeding circuitry. Care should be taken in
the layout of such traces to avoid this possibility.
1000
0.01
100
0.1
10
1
1k
DISTANCE = 100mm
for Various Current-to-ADuM130x Spacings
Figure 17. Maximum Allowable Current
DISTANCE = 5mm
10k
MAGNETIC FIELD FREQUENCY (Hz)
100k
1M
DISTANCE = 1m
10M
100M
Rev. H | Page 26 of 28
POWER CONSUMPTION
The supply current at a given channel of the ADuM130x
isolator is a function of the supply voltage, the data rate of
the channel, and the output load of the channel.
For each input channel, the supply current is given by
For each output channel, the supply current is given by
where:
I
per channel (mA/Mbps).
C
V
f is the input logic signal frequency (MHz); it is half of the input
data rate expressed in units of Mbps.
f
I
supply currents (mA).
To calculate the total V
currents for each input and output channel corresponding to
V
provide per-channel supply currents as a function of data rate
for an unloaded output condition. Figure 8 provides per-channel
supply current as a function of data rate for a 15 pF output
condition. Figure 9 through Figure 12 provide total V
V
ADuM1301 channel configurations.
r
DDI (D)
DDI (Q)
L
DDO
is the input stage refresh rate (Mbps).
DD1
DD2
is the output load capacitance (pF).
I
I
I
I
and V
supply current as a function of data rate for ADuM1300/
is the output supply voltage (V).
DDI
DDI
DDO
DDO
, I
, I
DDO (D)
DDO (Q)
= I
= I
= (I
= I
DD2
DDI (Q)
DDI (D)
DDO (Q)
DDO (D)
are the input and output dynamic supply currents
are the specified input and output quiescent
are calculated and totaled. Figure 6 and Figure 7
× (2f − f
+ (0.5 × 10
DD1
r
) + I
and V
−3
DDI (Q)
) × C
DD2
L
supply current, the supply
× V
DDO
) × (2f − f
f ≤ 0.5 f
f ≤ 0.5 f
r
f > 0.5 f
f > 0.5 f
) + I
DD1
and
DDO (Q)
r
r
r
r