High Voltage Isolator
OPI1268
Features:
TTL compatible output
16 kV dc isolation
2Mbit/s
t
PHL
-t
PLH
≤ 500 ns
Creepage path: 0.970” (24.64 mm)
Air path: 0.970” (24.64 mm)
UL recognized file No. E58730
Description:
The
OPI1268
is a high voltage isolator with a digital output that is capable of high speed data transmission. The input of the
OPI1268 consists of a high-efficiency GaAlAs LED with a peak wavelength of 850 nm, which is optically coupled to the output
optical IC. A photodiode in the output IC detects the incoming modulated light and converts it to a proportionate current.
This current is fed into a high-gain linear amplifier which is temperature, current and voltage compensated. The result is a
highly stable digital output with an open collector inverter configuration. This device produces DC and AC voltage isolation
between the input and output circuitry while providing TTL signal integrity.
Applications:
Data transmission for High
voltage isolation
PCBoard power system
isolation
Industrial equipment power
isolation
Medical equipment power
isolation
Office equipment
Part
Number
OPI1268
LED Peak
Wavelength
850 nm
Ordering Information
Sensor
Photologic®
Open Collector
Isolation
Voltage
kVDC
16
t
PLH
/ t
PHL
Max (ns)
100 / 200
I
F
(mA)
Typ / Max
10 / 50
V
CE
(V)
Max
18
Lead
Length /
Spacing
0.12" /
0.98"
Pin
1
2
3
4
5
Function
Cathode
Anode
Vcc
Output
Ground
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | OPTEK Technology
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue C
11/2017
Page 1
High Voltage Isolator
OPI1268
Absolute Maximum Ratings
(
T
A
= 25
o
C unless otherwise noted)
Storage Temperature
Operating Temperature
Input-to-Output Isolation Voltage
(2)
Lead Soldering Temperature (1/16” (1.6 mm) from case for 5 seconds with soldering iron)
(3)
Input Diode
Continuous Forward Current
Peak Forward current (1 µs pulse width, 300 pps)
Reverse Voltage
Power Dissipation
(1)
Output IC
Maximum Supply Voltage
Power Dissipation
(4)
Maximum Output Voltage
Maximum Output Current
7V
40 mW
18 V
25 mA
30 mA
3.0 A
3.0 V
100 mW
-40° C to +100° C
-40° C to +100° C
16 kVDC
260° C
Electrical Characteristics
(T
A
= 0° C to 70° C unless otherwise noted)
SYMBOL
Input Diode
V
F
I
R
Forward Voltage
Reverse Current
-
-
1.3
0.1
1.6
100
V
µA
I
F
= 20 mA
V
R
= 2.0 V
PARAMETER
MIN
TYP
MAX
UNITS
TEST CONDITIONS
Output IC
(V
CC
= 4.5 V to 5.25 V) (See OPL550 for additional information—for reference only.)
I
OH
V
OL
I
CCH
I
CCL
High Level Output Current
Low Level Output Voltage
High Level Supply Current
Low Level Supply Current
-
-
-
-
0.20
0.44
4.2
6.7
10
0.55
7
10
µA
V
mA
I
F
= 0.0 mA, V
OH
= 18.0 V, Vcc = 5.25 V
I
F
= 10.0 mA, I
OL
= 8.0 mA, Vcc = 4.5 V
I
F
= 0, Vcc = 5.25V
I
F
= 10.0 mA, Vcc = 5.25 V
Coupled Characteristics
(V
CC
= 5 V)
C
IO
t
PLH
t
PHL
I
ISO
I
F
+
Coupling Capacitance
Propagation Delay to Low Output Level
Propagation Delay to High Output Level
Isolation Leakage Current
(5)
LED Positive Going Threshold Current
-
-
-
-
0.8
-
-
-
-
1.7
2
200
100
20
5.0
pF
ns
µA
mA
Input and output leads shorted.
Vcc=5V, I
F
=30mA, R
L
=560Ω
VISO = 19.2kV dc
V
CC
= 5V, I
OL
= 8.0mA
Notes:
(1) Derate LED linearly 1.33 mW/°C above 25°C.
(2) UL recognition is for 16kV dc for one minute.
(3) RMA flux is recommended. The duration can be extended to 10 seconds maximum when flow soldering.
(4) Derate linearly 0.54m W/°C above 25°C.
(5) Measured with input leads shorted together and output leads shorted together in air with a maximum relative humidity of 50%.
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | OPTEK Technology
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue C
11/2017
Page 2
High Voltage Isolator
OPI1268
IF(+) vs Ta
10
6.0
V
(out)
vs I
F
V
CC
= 5.0 V
I
OL
= 8.0 mA
V
(out)
- Typical Voltage Low Output - V
8
5.0
IF - Forward Current - mA
Vcc = 4.5 V
I
OL
= 8 mA
Ta = 25 °C
4.0
6
3.0
4
2.0
2
1.0
0
-40
-20
0
20
40
60
80
100
0.0
0
1
2
3
4
5
Ta - Ambient Temperature - °C
I
F
- Forward Current - mA
Vol vs Ambient Temperature
0.6
I
OH
vs. Ambient Temperature
8
7
0.5
V
CC
=4.50V
I
OL
=8mA
I
F
=10mA
Vcc = 5.0 V
V
OH
= 18.0 V
VOL - Low Output Voltage - V
6
0.4
5
I
OH
-
mA
0.3
4
3
0.2
2
0.1
1
0.0
-40
-20
0
20
40
60
80
100
0
-40
-20
0
20
40
60
80
100
Ta - Ambient Temperature - C
Ta - Ambient Temperature - °C
Supply Current vs I
CCH
and I
CCL
vs Ambient temperature
9
8
7
6
5
4
3
2
1
0
-40
-20
0
20
40
60
80
100
120
Variable Diode Forward Current (I
F
) vs Propagation Delay Time - (t
PLH
, t
PHL
)
V
CC
= 5.0 V
R
L
= 560 Ω
f = 100 kH
z
t
PLH
, t
PHL
- Typical Propagation Delay Time - ns
V
CC
= 5.25
I
F
= 10mA
110
I
CCL
100
Supply Current - mA
90
Avg. tPLH Delay
Avg. tPHL Delay
I
CCH
V
CC
= 5.25
I
F
= 0mA
80
70
60
50
40
30
1
2
3
4
5
6
7
8
9
10
11
12
Ta - Ambient Temperature -c
I
F
- Diode Forward Current - mA
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | OPTEK Technology
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue C
11/2017
Page 3
High Voltage Isolator
OPI1268
dV/dT
OPI1268 dV/dT Emitter
OPI1268 dV/dT Emitter
0.5
0.4
0.3
0.2
0.1
s
t
l
0
o
-0.1
V
-0.2
-0.3
-0.4
-0.5
0.5
OPI126 8…
OPI126 8…
OPI1268
dV/dT Sensor
OPI1268
dV/dT Sensor
0.4
0.3
0.2
0.1
Volts
OPI1268 On (Spec 2 Volt s)
OPI1268 Of f (Spec 0.8 Volt s)
0
-0.1
-0.2
Pulse Leading Edge
2,000 v olts Peak-Peak
Pulse Trailing Edge
2,000 v olts Peak-Peak
-0.3
-0.4
-0.5
0
50
100
150
Pulse Leading Edge
2,000 volt s Peak-Peak
Rise or Fall Time 20 ns 10%-90%
Pulse Trailing Edge
2,000 volt s Peak-Peak
Rise or Fall Time 20 ns 10%-90%
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5
1 1 2 2 3 3 4
Time (ns)
6 7 7 8 8 9 9
4 5 5 6
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
Time (ns)
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | OPTEK Technology
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue C
11/2017
Page 4
950
High Voltage Isolator
OPI1268
Issue
Change Description
Initial Release of OPI1266 (July 1996).
A
A.1
A.2
A.3
A.4
A.5
B
C
D
E
F
OPI1268 (from PDF Catalog)
Combined OPI1266 and OPI1268 and put in new format. Inserted new
package drawing.
Added Note 3 on page 2
Updated Table on page 3
Separated OPI1266 form the OPI1268
Reversed tPHL & tPLH times, Removed reference to Input Diode
Change .01µF to 1.0µF on Figure 1. Change Peak Forward Current from
50 mA to 30 mA.
Change “2 Mbd transfer rate” to 2MBit/s.
Add the UL certification E58730
Page 2 Note 1: added “m” to 1.33m W…
Page 2 added Note 4: Derate linearly 0.54m W/°C above 25°C
Removed (1) on “Input-to-Output Isolation Voltage
”
Deleted asterisk
Trevor Schelp
Approval
Date
July 1996
07/04
05/17/07
08/21/07
10/01/07
11/27/07
05/07/2008
11/11/10
11/23/10
4/9/15
Bob Procsal
Trevor Schelp
Trevor Schelp
Trevor Schelp
Trevor Schelp
Trevor Schelp
Cosmin Suciu
Tom Osborne
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | OPTEK Technology
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue C
11/2017
Page 5
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