ETC IL717

ISOLOOP®
IL715/6/7
NVE CORPORATION
Four Channel Digital Isolators
Features
Functional Diagram
IL715
1IN
3IN
Galvanic Isolation
2IN
1OUT
4IN
2OUT
3OUT
· +5 and 3.3V CMOS Compatible
· 2500 VRMS Isolation (1 min)
· 2 ns Typical Pulse Width Distortion
· 10 ns Typical Propagation Delay
· 30 kV/µs Typical Transient Immunity
· 100 MBd Data Rate
· 16 Pin SOIC Package
· UL1577 Approved (File # E207481)
· IEC 61010-1 Approved (Report # 607057)
4OUT
Applications
IL716
1IN
3OUT
Galvanic Isolation
2IN
1OUT
2OUT
3IN
Description
4IN
4OUT
IL717
3IN
1OUT
Galvanic Isolation
1IN
2IN
· Isolated Data Transmission
· Isolated ADCs and DACs
· Isolated RS485 and RS422
· Parallel Bus Isolation
· Computer Peripheral Interface Isolation
· Logic Level Shifting
4OUT
2OUT
3OUT
4IN
Isoloop® is a registered trademark of NVE, Inc.
The IL715, IL716 and IL717 series of 4–channel digital isolators
provide the designer with the most compact isolated 5V logic
devices yet available. These isolators are packaged in three
options: IL715 with four unidirectional channels, IL716 with
two channels in one direction and two channels in the opposite
direction, and the IL717 with three channels in one direction and
one channel in the other direction. All these devices are
fabricated with patented* IsoLoop® technology giving them
excellent transient immunity specifications. The symmetric
magnetic coupling barrier gives these isolators a propagation
delay of only 10 ns and a pulse width distortion of 2 ns. Devices
are 100% high voltage tested to guarantee barrier integrity.
The IL715, IL716 and IL717 have a 100 MBaud data rate which
is independent of direction. They are available in 16–pin SOIC
packages and are specified over the temperature range
–40ºC to +100ºC.
* US Patent number 5,831,426 and others.
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
Fax: (952) 829-9189
Internet: www.isoloop.com
ISOLOOP®
IL715/6/7
Absolute Maximum Ratings
Parameters
Storage Temperature
Ambient Operating Temperature(1)
Supply Voltage
Input Voltage
Output Voltage
Output Current
Lead Solder Temperature (10s)
ESD
Symbol
Min.
Max.
TS
-55
175
o
o
C
TA
-55
125
VDD1,VDD2
-0.5
7
Volts
VI
-0.5
VDD1+0.5
Volts
VO
-0.5
VDD2+0.5
Volts
10
mAmps
IO
C
260
o
Max.
Units
Test Conditions
2500
VRMS
60Hz
8.077 (wide body)
4.026 (narrow body)
mm
C
2kV Human Body Model
Insulation Specifications
Parameter
Symbol
Min
Rated Voltage, 1 minute
Creepage Distance (External)
Leakage Current
Capacitance (Input-Output)(5)
Typ.
CI-O
Recommended Operating Conditions
Parameters
Ambient Operating Temperature
Supply Voltage
Logic High Input Voltage
Logic Low Input Voltage
Input Signal Rise and Fall Times
Units
0.2
µAmps
240 VRMS
4.0
pF
f= 1MHz
Symbol
Min.
Max.
TA
-40
100
VDD1,VDD2
3.0
5.5
Volts
VIH
2.4
VDD
Volts
VIL
0
0.8
Volts
1
µsec
tIR,tIF
Units
o
C
2
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
Fax: (952) 829-9189
Internet: www.isoloop.com
ISOLOOP®
IL715/6/7
Electrical Specifications
Electrical Specifications are Tmin to Tmax .
Parameter
Symbol
DC Specifications
Input Quiescent Supply Current
IL715
IL716
IL717
Min
3.3V
5V
Typ.
Max.
Units
3.3V
5V
3.3V
5V
IDD1
IDD1
IDD1
17
2.4
1.5
25
4
2.2
27
3.3
1.7
40
5
2.5
µA
mA
mA
IDD2
IDD2
IDD2
4.8
2.4
4.2
8
4
7
7
3.3
5.3
10
5
8
mA
mA
mA
Test Conditions
Output Quiescent Supply Current
IL715
IL716
IL717
Logic Input Current
II
-10
Logic High Output Voltage
VOH
VDD-0.1
0.8*VDD
Logic Low Output Voltage
VOL
Switching Specifications at 25oC
Clock Frequency
Data Rate
Minimum Pulse Width
Propagation Delay
Input to Output (High to Low)
Propagation Delay
Input to Output ( Low to High)
Pulse Width Distortion(2)
| tPHL- tPLH |
(3)
Propagation Delay Skew
Output Rise Time (10-90%)
Output Fall Time (10-90%)
Common Mode Transient
Immunity (Output Logic High or
Logic Low)(4)
Channel to Channel Skew
10
V
IO =-20 µA, VI =VIH
I = -4 mA, V =V
V
IO = 20 µA, VI =VIL
I = 4 mA, V =V
O
0
0.5
0.1
0.8
fmax
PW
µA
10
VDD
VDD-0.5
O
I
I
50
50
MHz
CL = 15 pF
100
100
MBd
CL = 15 pF
ns
50% Points, VO
10
tPHL
12
10
18
15
ns
CL = 15 pF
tPLH
12
10
18
15
ns
CL = 15 pF
PWD
2
2
3
3
ns
CL = 15 pF
tPSK
4
4
6
6
ns
CL = 15 pF
tR
2
1
5
3
ns
CL = 15 pF
tF
2
1
5
3
ns
CL = 15 pF
30
30
kV/µs
Vcm =300V
2
2
ns
CL = 15 pF
IH
IL
|CMH|
20
20
|CML|
tCSK
3
3
Electrostatic Discharge Sensitivity
This product has been tested for electrostatic sensitivity to the limits stated in the specifications. However, NVE recommends that all
integrated circuits be handled with appropriate care to avoid damage. Damage caused by inappropriate handling or storage could
range from performance degradation to complete failure.
3
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
Fax: (952) 829-9189
Internet: www.isoloop.com
ISOLOOP®
IL715/6/7
Notes:
1. Absolute Maximum ambient operating temperature means
the device will not be damaged if operated under these
conditions. It does not guarantee performance.
2. PWD is defined as | tPHL– tPLH |. %PWD is equal to the
PWD divided by the pulse width.
3. tPSK is equal to the magnitude of the worst case difference in
tPHL and/or tPLH that will be seen between units at 25OC.
4. CMH is the maximum common mode voltage slew rate that
can be sustained while maintaining VO > 0.8 VDD. CML is
the maximum common mode input voltage that can be
sustained while maintaining VO < 0.8 V. The common
mode voltage slew rates apply to both rising and falling
common mode voltage edges.
5. Device is considered a two terminal device:
pins 1–8 shorted and pins 9–16 shorted.
4
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
Fax: (952) 829-9189
Internet: www.isoloop.com
ISOLOOP®
IL715/6/7
Application Notes:
Data Transmission Rates
Power Consumption
The IsoLoop family of devices achieves its low power
consumption from the manner by which it transmits data
across its isolation barrier. By detecting the edge transitions
of the input logic signal and converting this to a narrow
current pulse which drives the isolation barrier, the isolator
then latches the input logic state in the output latch. Since
the current pulses are narrow, about 2.5 ns wide, the power
consumption is independent of mark-to-space ratio and
solely dependent on frequency. This has obvious advantages
over optocouplers whose power consumption is heavily
dependent on its on state and frequency.
Power Supply Decoupling
Both power supplies to these devices should be decoupled
with good quality 47 nF ceramic capacitors. For data
rates in excess of 10MBd, use of ground planes for both
GND1 and GND2 is highly recommended. Capacitors
should be located as close as possible to
the device.
Signal Status on Start-up and Shut Down
To minimize power dissipation, the input signals to the
IL715, IL716 and IL717 are differentiated and then latched
on the output side of the isolation barrier to reconstruct the
signal. This could result in an ambiguous output state
depending on power up, shutdown and power loss
sequencing. Therefore, the designer should consider the
inclusion of an initialization signal in his start-up circuit.
The reliability of a transmission system is directly related to
the accuracy and quality of the transmitted digital
information. For a digital system, those parameters which
determine the limits of the data transmission are pulse width
distortion and propagation delay skew.
Propagation delay is the time taken for the signal to travel
through the device. This is usually different when sending a
low-to-high than when sending a high-to-low signal. This
difference, or error, is called pulse width distortion (PWD)
and is usually in ns. It may also be expressed as a
percentage:
PWD% = Maximum Pulse Width Distortion (ns)
Signal Pulse Width (ns)
x 100%
e.g. for the IL717 @ 12.5 Mb
PWD% =
3 ns
80 ns
x 100% = 3.75%
This figure is almost 3x better than for any available
optocoupler with the same temperature range, and 2x better
than any optocoupler regardless of published temperature
range. The IsoLoop range of isolators including the IL717
surpasses the 10% maximum PWD recommended by
PROFIBUS, and will run at almost 35 Mb before reaching
the 10% limit.
Propagation delay skew is the difference in time taken for
two or more channels to propagate their signals. This
becomes significant when clocking is involved since it is
undesirable for the clock pulse to arrive before the data has
settled. A short propagation delay skew is therefore critical,
especially in high data rate parallel systems, to establish and
maintain accuracy and repeatability. The IsoLoop range
of isolators all have a maximum propagation delay skew of
6 ns, which is 5x better than any optocoupler. The
maximum channel to channel skew in the IL717, IL716, and
IL715 isolators is only 3 ns which is 10x better than any
optocoupler.
5
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
Fax: (952) 829-9189
Internet: www.isoloop.com
ISOLOOP®
IL715/6/7
Wide Body SOIC-16 Package : Order as IL715, IL716, or IL717
0.397(10.084)
0.413(10.490)
Pin 1
Indent
8
1
Dimensions in inches (mm)
0.394 (10.007)
0.419 (10.643)
0.291(7.391)
0.299(7.595)
70 TYP
16
9
0.287(7.290)
0.297(7.544)
0.010(0.254)
0.020(0.508)
x 45
0
0
0 - 8 TYP
0.013(0.330)
0.020(0.508)
0.009(0.229)
0.016(0.41)
0.012(0.305)
0.050(1.27)
0
7 TYP
0.092(2.337)
0.104(2.642)
0.080(2.032)
0.100(2.54)
0.040(1.016)
0.004(0.1016)
0.060(1.524)
0.011(0.279)
Narrow Body SOIC-16 Package : Order as IL715-3, IL716-3, or IL717-3
0.386
0.394
(9.802)
(9.999)
0
0.010 (0.245) 8
0.020 (0.508)
x45
0.152 (3.861)
0.157 (3.988)
Pin 1
Indent
1
0.016 (0.406)
0.050 (1.270)
0.228 (5.791)
0.244 (6.197)
0.008 (0.191)
0.010 (0.249)
0.013 (0.330)
0.020 (0.508)
0.050 (1.270)
0.060 (1.524)
0.054 (1.372)
0.068 (1.727)
0.004 (0.102)
0.040 (1.016)
0.060 (1.524)
0.010 (0.249)
Dimensions: inches (mm)
min
max
6
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
Fax: (952) 829-9189
Internet: www.isoloop.com
ISOLOOP®
IL715/6/7
Pin Configurations IL715, IL716, IL717
1
16
VDD2
GND1
IN1
2
15
GND2
OUT1
IN2
IN3
IN4
NC
GND1
3
4
5
6
7
Galvanic Isolation
VDD1
8
14
13
10
OUT2
OUT3
OUT4
NC
9
GND2
12
11
IL715
1
16
VDD2
GND1
2
15
IN1
3
GND2
OUT1
IN2
OUT3
OUT4
NC
GND1
4
5
6
7
Galvanic Isolation
VDD1
8
14
13
12
11
10
OUT2
IN3
IN4
9
NC
GND2
IL716
1
16
VDD2
GND1
IN1
2
15
GND2
OUT1
IN2
IN3
OUT4
NC
GND1
3
4
5
6
7
Galvanic Isolation
VDD1
14
13
12
11
10
9
8
OUT2
OUT3
IN4
NC
GND2
IL717
7
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
Fax: (952) 829-9189
Internet: www.isoloop.com
About NVE
An ISO 9001 Certified Company
NVE Corporation is a high technology components manufacturer having the unique capability to
combine leading edge Giant Magnetoresistive (GMR) materials with integrated circuits to make
high performance electronic components. Products include Magnetic Field Sensors, Magnetic
Field Gradient Sensors (Gradiometer), Digital Magnetic Field Sensors, Digital Signal Isolators
and Isolated Bus Transceivers.
NVE is a leader in GMR research and in 1994 introduced the world's first products using GMR
material, a line of GMR magnetic field sensors that can be used for position, magnetic media,
wheel speed and current sensing.
NVE is located in Eden Prairie, Minnesota, a suburb of Minneapolis. Please visit our Web site at
www.nve.com or call 952-829-9217 for information on products, sales or distribution.
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
Fax: (952) 829-9189
Internet: www.nve.com
e-mail: [email protected]
The information provided by NVE Corporation is believed to be accurate. However, no
responsibility is assumed by NVE Corporation for its use, nor for any infringement of patents, nor
rights or licenses granted to third parties, which may result from its use. No license is granted by
implication, or otherwise, under any patent or patent rights of NVE Corporation. NVE
Corporation does not authorize, nor warrant, any NVE Corporation product for use in life support
devices or systems or other critical applications. The use of NVE Corporation’s products in such
applications is understood to be entirely at the customer's own risk.
Specifications shown are subject to change without notice.
ISB-DS-001-IL715/6/7-C