IL610-3E NVE, IL610-3E Datasheet - Page 11

• Manufacturer Part Number: IL610-3E
• Description: ISOLATOR PASSIVE INPUT 8-SOIC
• Manufacturer: NVE
• Series: IsoLoop®r

Specifications of IL610-3E

• Inputs - Side 1/side 2: 1/0
• Number Of Channels: 1
• Isolation Rating: 2500Vrms
• Voltage - Supply: 3 V ~ 5.5 V
• Data Rate: 100Mbps
• Propagation Delay: 12ns
• Output Type: CMOS
• Package / Case: 8-SOIC (3.9mm Width)
• Operating Temperature: -40°C ~ 85°C
• No. Of Channels: 1
• Supply Current: 2mA
• Supply Voltage Range: 3V To 5.5V
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Operating: RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 390-1077-5; IL610-3E; Q2450046

Differential or Single Ended Input
The IL610, IL611, IL613 and channel 1 of
the IL614 can be run with differential or
single-ended inputs. In the differential mode
current will flow through the coil in both
directions. This is not a problem for the
device. Figure 3 shows that current flowing
from In+ to In- (positive values of current in
the graph) will simply push the device into
the high state quicker than if the current was
allowed to passively return to zero. There are
many applications where the differential
option can be very useful. The most obvious
advantage of the devices over optocouplers
and other high-speed couplers in this regard
is that no reverse bias protection for the input
structure is required when it is subjected to a
differential signal. This reduces cost and
complexity. One of the more common applications is an isolated Differential Line Receiver. RS485 and RS422 signals can be
terminated on the IL610 at a fraction of the cost of an isolated RS485 node.
Magnetic Field Immunity
All IsoLoop devices operate by imposing a
magnetic field on a GMR sensor which then
translates the change in field into a change in
output logic state. The devices are
manufactured with a magnetic shield above
the sensor. This shield acts as a flux
concentrator to boost the magnetic signal
from the internal coil and as a shield against
externally generated magnetic fields. The
shield will absorb surrounding stray flux until
it becomes saturated. At saturation the shield
is transparent to an external applied field and
the GMR sensor may react to the field. To
compensate for this effect, IsoLoop devices
use Wheatstone Bridge structures which are
only sensitive to differential magnetic fields.
In addition, the IL600 series allows several
ways of enhancing magnetic field immunity.
In general, applying a larger internal field will reduce the effect of an external field on the GMR sensor.
Figure 5. Use of the Signal Boosting Capacitor C1
Figure 6. Isolated RS485 Receiver Using IL610
Data In
Data In
1K
1K
1
1
2
2
3
3
4
4
11
D
D
R
R
RE
RE
DE
DE
C
C
1
1
2
2
3
3
ISL4486
ISL4486
+5 V
+5 V
+
+
IL610
IL610
-
-
GND
GND
1
1
8
8
7
7
6
6
5
5
C
C
1
1
A
A
B
B
V
V
DD1
DD1
GND
GND
8
8
7
7
6
6
5
5
Note. C
Note. C
2
2
C
C
1K
1K
2
2
C
C
1
1
2
2
Data Out
Data Out
3
3
2
2
Note. All capacitors are 47nF ceramic
is 200 pF to 1 nF ceramic.
is 200 pF to 1 nF ceramic.
is 47 nF ceramic.
is 47 nF ceramic.
+
+
V
V
-
-
IL610
IL610
IL600 Series
DD
DD
GND
GND
8
8
7
7
6
6
5
5
C
C
2
2
2
2
V
V
DD2
DD2