IL610-2E NVE, IL610-2E Datasheet - Page 9

• Manufacturer Part Number: IL610-2E
• Description: ISOLATOR PASSIVE INPUT HS 8DIP
• Manufacturer: NVE
• Series: IsoLoop®r

Specifications of IL610-2E

• 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-DIP
• Operating Temperature: -40°C ~ 85°C
• No. Of Channels: 1
• Supply Current: 2mA
• Supply Voltage Range: 3V To 5.5V
• Digital Ic Case Style: DIP
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Operating: RoHS Compliant
• Base Number: 610
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 390-1076-5

Typical Resistor Values
The table shows typical values for the external resistor in 5 V and 3 V logic systems. As usual, use these values as approximate
Power Supplies
It is recommended that 47 nF ceramic capacitors be used to decouple the power supplies. The capacitors should be placed as close
as possible to the appropriate V
Applications Information
The IL600 series devices are current mode isolators. This means that a current of a certain magnitude and direction must flow in
the input coil to change the output logic state. Figure 3 shows a simplified transfer curve for a typical IL600 series data channel.
input current of approximately -3.5 mA or -1.5 mA will cause the device to hover around the comparator switching thresholds and
will produce an unstable output response. The recommendation for single-ended operation across the entire temperature range and
power supply range is that the magnitude of the coil current for a logic low is at least -5 mA and the magnitude of the coil current
for a logic high is between -0.8 mA and 0 mA. At this point it should be noted that the stated direction of the current is negative in
Figure 3 since we are creating a negative magnetic field with respect to Earth Field. Current is always fed into the In- terminal of
an IL6xx device. Since these currents are actually sourced, not sunk by the user, the specified currents are quoted as positive
values in the Electrical Specifications section of this data sheet.
When designing circuits using digital logic, most designers are aware that the input to a logic gate is differential with respect to
ground. The importance of the ground signal is such that separate ground layers, star points or planes usually need to be designed
into circuit boards with fast switching currents to reduce ground voltage bounce caused by inductance in ground returns. Ground
error voltages can be responsible for transmitted data errors in high speed circuits because of their impact on the effective logic
threshold voltage at any given instant. Similarly, when using the IL600 series devices, the designer should be aware that it is the
magnitude of the voltage across the coil which creates the current and not just the value of the input voltage. To illustrate this point
consider the following cases.
V
3.3 V
5 V
Figure 3. IL600 Series Transfer Function
COIL
Window of Operation
-10 -9 -8
0.125W, 10% Resistor
665 Ω
1 kΩ
-7 -6 -5 -4 -3 -2 -1 0
DD
Bridge o/p (mV)
pin for optimum output wave shaping.
60
40
20
-20
-40
-60
and factor in application specifics such as temperature range required. If the
expected temperature range is large, the designer may wish to use 5% or even 1%
tolerance resistors to provide extra design latitude. Alternately, see the Applications
section for circuit ideas which allow more generalized resistor selection.
5
Comparator Low Threshold
Comparator High Threshold
9
Bridge Output Response
10
Coil Current (mA)
IL600 Series
The transfer function for
this device is essentially
linear in nature. An applied
coil input current creates a
magnetic field which
causes the GMR bridge
output to change in
proportion to the applied
field. The GMR bridge is
connected to a comparator.
When the bridge output is
greater than the
comparator high threshold
level the output will go
high. Similarly, when the
bridge output is less than
the comparator low
threshold, the output will
go low. The Window of
Operation shown in
Figure 3 highlights the
specified corners of
operation of the device. An