OPTEK Technology
Optek reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc.-- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323 2396 sensors@optekinc.com www.optekinc.com
A subsidiary of
TT electronics plc
Issue A 07.04
High Speed, High Voltage
Optical Isolator
OPI1268
TTL Compatible Output
16KV Isolation
2Mbd Transfer Rate
Creepage Path: 0.970" (24.64mm)
Air Path: 0.970" (24.64mm)
Low Propagation Delay Time
The OPI1268 is a high voltage isolator with a digital output which is capable of high speed data transmission.
This device is capable of DC and AC voltage isolation between the input and output circuitry while providing
TTL signal integrity.
The input of the OPI1268 consists of a high efficiency GaAlAs LED which is optically coupled to the output opti-
cal 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 compen-
sated. The result is a highly stable digital output in an open collector inverter configuration.
Applications include:
High Voltage Isolation
PCBoard Power System Isolation
Industrial Equipment Power Isolation
Medical Equipment Power Isolation
Product Photo Here
Ordering Information
Please order part number OPI1268
OPTEK Technology
OPTEK Technology Inc.-- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323 2396 sensors@optekinc.com www.optekinc.com
Issue A 07.04
Page 2 of 7
High Speed, High Voltage Optical Isolator
OPI1268
Absolute Maximum Ratings (
T
A
= 25
o
C unless otherwise noted)
Storage Temperature
-40 C to +100 C
Lead Soldering Temperature (1/16" (1.6mm) from case for 5 seconds with soldering iron)
260
C
(1)
Operating Temperature
-40 C to +100 C
Input-to-Output Isolation Voltage
16KVDC
(2)
LED
Forward Current
50 mA
Power Dissipation
100 mW
Reverse DC Voltage
3.0 V
Peadk Forward currnet (2 s pulse width, 0.1% Duty Cycle)
3.0 A
Notes:
(1) RMA flux is recommended. The duration can be extended to 10 seconds maximum when flow soldering.
(2) Measured with the input leads and the output leads shorted together. Typical input/output capacitance is 0.05pF.
(3) Measured with a 1s pulse width, 300pps.
Output IC Photologic
Supply Voltage Range
-0.5V to 7.0V
Power Dissipation
40 mW
Output Current
25 mA
Output Voltage Range
-0.5V to 18.0V
SYMBOL
PARAMETER
MIN TYP MAX UNITS
TEST CONDITION
Input Diode
V
F
Forward Voltage
1.3
1.6
V
I
F
= 20mA
I
R
Reverse Current
100
A
V
R
= 3.0V
Output IC (V
CC
= 4.5V to 5.5V)
I
OH
High Level Output Current
0.25
15
A
I
F
= 0mA, V
CC
= 5.25V, V
OH
= 18.0V
V
OL
Low Level Output Voltage
0.4
0.5
V
I
F
= 10mA, V
CC
= 4.5V, I
OL
= 8.0mA
I
CCH
High Level Supply Current
2.5
7
mA
I
F
= 0mA, V
CC
= 5.25V
I
CCL
Low Level Supply Current
6
10
mA
I
F
= 10mA, V
CC
= 5.25V
C
IO
Coupling Capacitance
2.0
pF
Input and output leads shorted.
t
PLH
Propagation Delay--Low to High
100
ns
See Figures 1 & 2
t
PHL
Propagation Delay--High to Low
200
ns
See Figures 1 & 2
I
ISO
Isolation Leakage Current
1.0
A
VISO = 7KV(RMS), input and output
leads shorted
Coupled Characteristics (V
CC
= 5V)
t
PHL-
t
PLH
Difference in Propagation Delays
100
ns
See Figures 1 & 2
I
F
+
LED Positive Going Threshold Current
0.9
4.0
10.0
mA
V
CC
= 5V, I
OL
= 8.0mA
Electrical Characteristics (
T
A
= 25
o
C unless otherwise noted)
OPTEK Technology
OPTEK Technology Inc.-- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323 2396 sensors@optekinc.com www.optekinc.com
High Speed, High Voltage Optical Isolator
OPI1268
Issue A 07.04
Page 3 of 7
V
OL
vs. Ambient Temperature
0.00
0.10
0.20
0.30
0.40
0.50
0.60
-40
-20
0
20
40
60
80
100
Ta - Ambient Temperature - C
V
OL
- Low Output Voltage - V
Vcc = 4.50 V
I
OL
= 8 mA
I
F
= 10 mA
I
CCH
& I
CCL
vs. Ambient Temperature
0
1
2
3
4
5
6
7
8
9
10
-40
-20
0
20
40
60
80
100
Ta - Ambient Temperature - C
Supply Current - mA
I
CCH
Vcc=5.25 V
I
F
= 0 mA
I
CCL
Vcc = 5.25 V
I
F
= 10 mA
OPTEK Technology
OPTEK Technology Inc.-- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323 2396 sensors@optekinc.com www.optekinc.com
High Speed, High Voltage Optical Isolator
OPI1268
Issue A 07.04
Page 4 of 7
V
(out)
vs I
F
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0
1
2
3
4
5
I
F
- Forward Current - mA
V
(
out
)
- Voltage Low Output - V
Vcc = 5.0 V
I
OL
= 8 mA
Ta = 25 C
I
OH
vs. Ambient Temperature
0
1
2
3
4
5
6
7
8
-40
-20
0
20
40
60
80
100
Ta - Ambient Temperature - C
I
OH
-
A
Vcc = 5.0 V
V
OH
= 18.0 V
OPTEK Technology
OPTEK Technology Inc.-- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323 2396 sensors@optekinc.com www.optekinc.com
High Speed, High Voltage Optical Isolator
OPI1268
Issue A 07.04
Page 5 of 7
dV/dT
IF(+) vs Ta
0
2
4
6
8
10
-40
-20
0
20
40
60
80
100
Ta - Ambient Temperature - C
I
F
- F
o
r
w
a
rd
Cu
rren
t
- mA
V
CC
= 5.0 V
I
OL
= 8.0 mA
O
P
I1
2
6
8
dV
/
dT S
e
n
s
o
r
-0
.
5
-0
.
4
-0
.
3
-0
.
2
-0
.
1
0
0.1
0.2
0.3
0.4
0.5
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
Ti
m
e
(
n
s
)
Volt
s
O
P
I
1
268 O
n
(
S
pec
2 V
o
l
t
s
)
O
P
I
1
268 O
f
f
(
S
pec
0.
8 V
o
l
t
s
)
P
u
l
s
e Leadi
ng
E
dge
2,
000 v
o
l
t
s
P
eak
-
P
eak
R
i
s
e
or
F
a
l
l
T
i
m
e
20 ns
1
0
%
-
90%
P
u
l
s
e T
r
ai
l
i
ng E
dge
2,
000 v
o
l
t
s
P
eak
-
P
eak
R
i
s
e
or
F
a
l
l
T
i
m
e
20
ns
1
0
%
-
90%
O
P
I1
2
6
8
dV
/
dT E
m
it
t
e
r
-0
.
5
-0
.
4
-0
.
3
-0
.
2
-0
.
1
0
0.
1
0.
2
0.
3
0.
4
0.
5
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
Ti
m
e
(
n
s
)
Volt
s
O
P
I
1
268 O
f
f
(
S
pec
0.
8 V
o
l
t
s
)
O
P
I
1
268 O
n
(
S
pec
2 V
o
l
t
s
)
P
u
l
s
e Leadi
ng
E
dge
2,
000 v
o
l
t
s
P
eak
-
P
eak
R
i
s
e
or
F
a
l
l
T
i
m
e
20 ns
1
0
%
-
90%
P
u
l
s
e T
r
ai
l
i
ng E
dge
2,
000 v
o
l
t
s
P
eak
-
P
eak
R
i
s
e
or
F
a
l
l
T
i
m
e
20 ns
1
0
%
-
90%
OPTEK Technology
OPTEK Technology Inc.-- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323 2396 sensors@optekinc.com www.optekinc.com
High Speed, High Voltage Optical Isolator
OPI1268
Issue A 07.04
Page 6 of 7
Figure 1: Propagation Delay Test Schematic
Figure 2: Input/Output Waveforms
Propogation Delay vs Ambient Temperature
0
20
40
60
80
100
120
140
160
180
200
-40
-20
0
20
40
60
80
100
Ta - Ambient Temperature - C
Propogation Delay - ns
Vcc=5.25
IF=10mA
RL=560ohm
FREQ=100KHZ
TPLH
TPH
OPTEK Technology
OPTEK Technology Inc.-- 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323 2396 sensors@optekinc.com www.optekinc.com
High Speed, High Voltage Optical Isolator
OPI1268
Issue A 07.04
Page 7 of 7
Mechanical Dimensions:
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