OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue C 11/2010
Page 1 of 4
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
High Voltage Isolator
OPI1268
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.
Features:
• TTL compatible output
• 16 KV isolation
• 2Mbit/s
• tPHL-tPLH ≤ 500 ns
• Creepage path: 0.970” (24.64 mm)
• Air path: 0.970” (24.64 mm)
• UL recognized file No. E58730*
Product Photo Here
RoHS
Ordering Information
Part
Number
LED Peak
Wavelength
Sensor
Photologic®
Isolation
Voltage
(,000)
tPLH / tPHL
Max (ns)
IF (mA)
Typ / Max
VCE (V)
Max
Lead
Length /
Spacing
850 nm Open Collector 16 0.12" /
0.98"
OPI1268 100 / 200 10 / 50 18
Applications:
• Data transmission for
High voltage isolation
• PCBoard power system
isolation
• Industrial equipment
power isolation
• Medical equipment power
isolation
• Office equipment
Pin # Function
1 Cathode
2 Anode
3 Vcc
4 Output
5 Ground
INCHES
[MILLIMETERS]
DIMENSIONS ARE IN:
Figure 1
* REPRESENTS CRITICAL DIMENSION TO BE SAMPLE INSPECTED.
Symbolize This Side
1.0µF
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue C 11/2010
Page 2 of 4
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
High Voltage Isolator
OPI1268
Electrical Characteristics (TA = 0° C to 70° C unless otherwise noted)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Input Diode
VF Forward Voltage - 1.3 1.6 V IF = 20 mA
IR Reverse Current - 0.1 100 µA VR = 2.0 V
Output IC (VCC = 4.5 V to 5.25 V) (See OPL550 for additional information—for reference only.)
IOH High Level Output Current - 0.20 10 µA IF = 0.0 mA, VOH = 18.0 V, Vcc = 5.25 V
VOL Low Level Output Voltage - 0.44 0.55 V IF = 10.0 mA, IOL = 8.0 mA, Vcc = 4.5 V
ICCH High Level Supply Current - 4.2 7 mA IF = 0, Vcc = 5.25V
ICCL Low Level Supply Current - 6.7 10 IF = 10.0 mA, Vcc = 5.25 V
Coupled Characteristics (VCC = 5 V)
CIO Coupling Capacitance - - 2 pF Input and output leads shorted.
tPLH Propagation Delay to Low Output Level - - 200 ns See Figure 1
tPHL Propagation Delay to High Output Level - - 100
IISO Isolation Leakage Current - - 1 µA VISO = @ 7kV RMS
( input and output leads shorted)
IF+ LED Positive Going Threshold Current 0.8 1.7 5.0 mA VCC = 5V, IOL = 8.0mA
Absolute Maximum Ratings (TA = 25o C unless otherwise noted)
Storage Temperature -40° C to +100° C
Operating Temperature -40° C to +100° C
Input-to-Output Isolation Voltage(1)(2) 16 KVDC
Lead Soldering Temperature (1/16” (1.6 mm) from case for 5 seconds with soldering iron)(3) 260° C
Input Diode
Continuous Forward Current 30 mA
Peak Forward current (1 µs pulse width, 300 pps) 3.0 A
Reverse Voltage 3.0 V
Power Dissipation(1) 100 mW
Maximum Supply Voltage 7 V
Power Dissipation(1) 40 mW
Output IC
Maximum Output Voltage 18 V
Maximum Output Current 25 mA
Notes:
(1) Derate linearly 1.33 W/°C above 25°C
(2) UL registered under E58730.
(3) RMA flux is recommended. The duration can be extended to 10 seconds maximum when flow soldering.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue C 11/2010
Page 3 of 4
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
High Voltage Isolator
OPI1268
IF(+) vs Ta
0
2
4
6
8
10
-40 -20 0 20 40 60 80 100
Ta - Ambient Temperature - °C
IF - Forward Current - mA
VCC = 5.0 V
IOL = 8.0 mA
V(out) vs IF
0.0
1.0
2.0
3.0
4.0
5.0
6.0
012345
I
F
- Forward Current - mA
V
(out)
- Typical Voltage Low Output - V
Vcc = 4.5 V
I
OL
= 8 mA
Ta = 25 °C
Vol vs Ambient Temperature
0.0
0.1
0.2
0.3
0.4
0.5
0.6
-40-20 0 20406080100
Ta - Ambient Temperature - C
VOL - Low Output Voltage - V
V
CC
=4.50V
I
OL
=8mA
I
F
=10mA
I
OH
vs. Ambient Temperature
0
1
2
3
4
5
6
7
8
-40-20 0 20406080100
Ta - Ambient Temperature - °C
I
OH
- μA
Vcc = 5.0 V
V
OH
= 18.0 V
Supply Current vs I
CCH
and I
CCL
vs Ambient temperature
0
1
2
3
4
5
6
7
8
9
-40-200 20406080100
Ta - Ambient Temperature -c
Supply Current - mA
V
CC
= 5.25
I
F
= 10mA
I
CCL
V
CC
= 5.25
I
F
= 0mA
I
CCH
Variable Diode Forward Current (I
F
) vs Propagation Delay Time - (t
PLH
, t
PHL
)
30
40
50
60
70
80
90
100
110
120
123456789101112
IF - Diode Forward Current - mA
tPLH, tPHL - Typical Propagation Delay Time - ns
Avg. tPLH Delay
Avg. tPHL Delay
VCC = 5.0 V
RL = 560 Ω
f = 100 kHz
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue C 11/2010
Page 4 of 4
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
High Voltage Isolator
OPI1268
dV/dT
OPI1268 dV/dT Emitter
-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
Time (ns)
Volts
OPI1268 Of f ( Spec 0.8 Volt s)
OPI1268 On ( Spec 2 Volt s)
Pul se Leading Edge
2,000 vol t s Peak -Peak
Rise or Fall Time 20 ns 10%-90%
Pulse Trailing Edge
2,000 vol ts Peak -Peak
Rise or Fall Time 20 ns 10%- 90%
OPI1268 dV/dT Sensor
-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
Time (ns)
Volts
OPI1268 On ( Spec 2 Vol t s)
OPI1268 Of f ( Spec 0.8 Volt s)
Pul se Leadi ng Edge
2,000 volt s Peak- Peak
Rise or Fall Time 20 ns 10%- 90%
Pul se Trai ling Edge
2,000 vol t s P eak- Peak
Rise or Fall Time 2 0 ns 10%- 90%
Notes:
