IsoLoop®
IL600-Series Isolator
Evaluation Board
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Board No.: IL600-01
The IL600-Series Isolator evaluation board lets you try a variety of NVE’s unique IL600-
Series Isolators.
The board has four isolators in four package types:
• IL613E (wide-body SOIC-16)
• IL614-3E (narrow-body SOIC-16)
• IL611-3E (SOIC-8)
• Open-drain IL610A-1E (MSOP-8)
A pushbutton and LED demonstrate the remarkable flexibility of these devices.
Award-winning IL600 and IL600A Isolators provide unique passive inputs for flexibility
similar to LED-input optocouplers but with better performance and higher package density.
The devices are manufactured with NVE’s patented IsoLoop spintronic Giant Magnetoresistive
(GMR) technology for small size, high speed, and low power.
IL600-Series Specification Highlights
Up to 100 Mbps Data Rate
Wide Input Voltage Range
Open Drain or CMOS Outputs
Fail-Safe Output
3.3 V or 5 V Power Supply
No Input-Side Power Supply Required
100 ps Pulse Jitter
Low Power Dissipation
Low EMC Footprint
2.5 kVrms Isolation (1 min.)
25,000 Year Barrier Life
UL1577 and IEC61010 Approved
MSOP, SOIC, and PDIP Packages
About This Evaluation Board
NVE Corporation (952) 829-9217 iso-apps@nve.com www.IsoLoop.com www.nve.com
Boost capacitors for
single-ended input
(16 pF for standard
logic)
Evaluation Board Layout
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LED driven by an
open-drain output
Pushbutton powers
input to tur n on
LED on the output
Input resistors
(249 Ohms for
approx. 8 mA
at 3.3 V input)
Jumpers power the
selected isolator(s)
47 nF decoupling
capacitors as close
as possible to VDD
pins
Devices without “A”
suffix have CMOS
outputs (“A” suffix
means open drain)
Open-drain output
(limited swing due to
LED voltage drop)
Inverting input
configuration
Non-inverting input
configuration
Output enable
jumper
NVE Corporation (952) 829-9217 iso-apps@nve.com www.IsoLoop.com www.nve.com
Evaluation Board Schematic
OUT
249R
VDD2
GND2
3
2
8
6
5
IN -
+
VDD1
GND1
VOE
7
All resistors = 249 Ohms
Boost capacitors = 16pF
Supply decoupling capacitors = 47nF
Isolation
Boundary
IL611-3E
OUT1
OUT2
IN1
IN2 -
+
-
+
VDD2
VDD1
4
3
2
1
8
6
7
IL614-3E
OUT1 IN1
OUT2
OUT3
VOE
IN2
IN3
VDD2
VDD1
-
+
-
+
6
7
5
4
3
116
13
11
14
OUT1
OUT2
OUT3
IL613E
IN1
GND1
IN2
IN3
-
+
-
+
-
+
VDD2
4
6
5
1
3
7
16
13
10
14
IL610A-1E
-
+
Device Operation
NVE Corporation (952) 829-9217 iso-apps@nve.com www.IsoLoop.com www.nve.com
IL600-Series Isolators are current mode devices. Changes in current flow into the input coil
drive output logic state changes.
The output is high with no signal present. Current flow from In- to In+ switches the output
low. The worst-case logic low threshold current is 5 mA. An input current of at least 8 mA
ensures fail-safe operation, meaning the output powers up in the correct state. The absolute
maximum coil current is 25 mA.
The evaluation board has examples of inputs configured as inverting and non-inverting:
For single-ended operation (that is, the coil current does not reverse), a boost capacitor in
parallel with the current-limiting resistor is used to induce bidirectional coil current. For
standard logic signals with rise times less than 10 ns,
a 16 pF boost capacitor is recommended. The
capacitor should be larger for slower rise time inputs.
The isolators can also be used with differential inputs
as shown in the figure at right. No boost capacitor is
needed if the coil current reverses in this
configuration. Unlike optocouplers, the input current
can be negative without reverse bias protection.
There is no limit to the input voltage as long as the
input current is limited.
+V V
DD
GND
1
GND
2
-
+
GND
12
C
boost
R
limit
+V V
DD2
GND
1
GND
2
-
+
R
limit
C
boost
GND
12
Inverting Configuration Non-inverting Configuration
+V V
DD
GND
1
GND
2
-
+
GND
12
R
limit
Differential Configuration
Illustrative Applications
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Visit www.IsoLoop.com for more illustrative IsoLoop Isolator applications.
Simple RS-485 Receiver
An IL610 can be used as a simple
isolated RS-485/RS-422 receiver.
Cabling is simplified by
eliminating the need to power the
receiving board input side. No
current-limiting resistor or
capacitor is needed for a single
receiver because it draws less than
the driver maximum current.
Termination resistors are usually
unnecessary because the 85 Ω
typical coil resistance is similar to
cable impedances.
GND2
VDD2
Z
ISL8490
D
C1
VDD1
GND1
Cboost
3
2
5
6
7
8
3
4
6C2
1
-
+
IL610
R
RE
Notes:
Cboost is application specific
All other capacitors are 47 nF ceramic
Y
1
5R
Isolated I²C Using IL612A
This circuit provides
bidirectional isolation of
I²C bus signals with no
restrictions on data rate and
none of the I²C bus latch-
up problems common with
other isolation circuits.
The SDA section is shown
here; the SCL section is
similar, and uses the other
half of the P82B96.
8
7
5
6
2
1
3
4
5V
5V
GND1GND
2
2K2 10K
750R
750R
C3
C2
C1
3
2
8
1
4
½ P82B96
SDA 270 pF
16 pF
SDA_iso
Notes:
C1, C2, and C3 are 47nF ceramic
Resistor values change for 3 V operation
750R
VDD2
VDD1
IL612A
Parameter Min. Typ. Max. Units
Data Rate (A-Series) 100 (10) Mbps
Pulse Width Distortion 3 5 ns
Propagation Delay 8 15 ns
Propagation Delay Skew 4 6 ns
Pulse Jitter 100 ps
Transient Immunity 15 20 kV /μs
Temperature Range 40 +85 °C
IL600-Series Isolators
NVE Corporation (952) 829-9217 iso-apps@nve.com www.IsoLoop.com www.IsoLoop.com
Award-Winning Flexibility
Award-winning IL600 and IL600A Series
Isolators provide unique passive inputs. The
IL600-Series has CMOS outputs and the
IL600A-Series has open-drain outputs.
Unlike other isolators, the IL600 and IL600A-
Series can be configured for inverting or non-
inverting inputs.
IL600 and IL600A-Series Isolators are
available in PDIP, SOIC, and unique MSOP
packages. Parts are also available as bare die
for chip-on-board assembly.
IL600-Series Applications
IsoLoop Isolators are faster, more reliable, and
simpler than optocouplers. Popular IL600-
Series Isolator applications include
optocoupler replacements, differential line
receivers, SPI interfaces, and space-critical
applications.
OUT1
VOE
OUT1
OUT2
OUT1
IN2
OUT1
OUT2
OUT3
IN1
IN1
IN2
IN1
OUT2
IN1
IN2
IN3
VDD1
VDD2
IL610
IL611
IL612
IL613
IL614
OUT1
IN2
IN3
IN1
OUT2
OUT3
COIL
RE
IN1
OUT2
IN1
IN1
IN2
GND
OUT1
IN2
VOE
OUT1
GND
OUT1
OUT2
GND
GND
VDD2
VDD1
IL610A
IL611A
IL612A
Limited Warranty and Liability
Information in this document is believed to be accurate and reliable. However, NVE does not give any
representations or warranties, expressed or implied, as to the accuracy or completeness of such information
and shall have no liability for the consequences of use of such information. In no event shall NVE be liable for
any indirect, incidental, punitive, special or consequential damages (including, without limitation, lost profits,
lost savings, business interruption, costs related to the removal or replacement of any products or rework
charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or
any other legal theory.
Right to Make Changes
NVE reserves the right to make changes to information published in this document including, without
limitation, specifications and product descriptions at any time and without notice.
Use in Life-Critical or Safety-Critical Applications
Unless NVE and a customer explicitly agree otherwise in writing, NVE products are not designed, authorized
or warranted to be suitable for use in life support, life-critical or safety-critical devices or equipment. NVE
accepts no liability for inclusion or use of NVE products in such applications and such inclusion or use is at
the customer's own risk. Should the customer use NVE products for such application whether authorized by
NVE or not, the customer shall indemnify and hold NVE harmless against all claims and damages.
Applications
Applications described in this document are illustrative only. NVE makes no representation or warranty that
such applications will be suitable for the specified use without further testing or modification. Customers are
responsible for the design and operation of their applications and products using NVE products, and NVE
accepts no liability for any assistance with applications or customer product design. It is customer's sole
responsibility to determine whether the NVE product is suitable and fit for the customer's applications and
products planned, as well as for the planned application and use of customer's third party customers. Customers
should provide appropriate design and operating safeguards to minimize the risks associated with their
applications and products. NVE does not accept any liability related to any default, damage, costs or problem
which is based on any weakness or default in the customer's applications or products, or the application or use
by customer's third party customers. The customer is responsible for all necessary testing for the customer's
applications and products using NVE products in order to avoid a default of the applications and the products or
of the application or use by customer's third party customers. NVE accepts no liability in this respect.
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Manual No.: ISB-CB-006 March 2012
NVE Corporation (952) 829-9217 iso-apps@nve.com www.IsoLoop.com www.nve.com