High Voltage Isolator
OPI1268
Features:
TTL compa ble output
16 kV dc isola on
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
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 op cally coupled to the output
op cal IC. A photodiode in the output IC detects the incoming modulated light and converts it to a propor onate 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 configura on. This device produces DC and AC voltage isola on
between the input and output circuitry while providing TTL signal integrity.
Applications:
Ordering InformaƟon
Data transmission for
High voltage isola on
PCBoard power
system isola on
Industrial equipment
power isola on
Medical equipment power
isola on
Office equipment
Pin
FuncƟon
1
Cathode
2
Anode
3
VCC
4
Output
5
Ground
Part
Number
LED Peak
Wavelength
Sensor
Photologic®
IsolaƟon
Voltage
kVDC
tPLH / tPHL
Max (ns)
IF (mA)
Typ / Max
VCE (V)
Max
Lead
Length /
Spacing
OPI1268
850 nm
Open Collector
16
100 / 200
10 / 50
18
0.12" /
0.98"
General Note
TT Electronics reserves the right to make changes in product specifica on without
no ce or liability. All informa on is subject to TT Electronics’ own data and is
considered accurate at me of going to print.
© TT electronics plc
TT Electronics | OPTEK Technology
2900 E. Plano Pkwy, Plano, TX 75074 | Ph: +1 972 323 2200
www. electronics.com | sensors@ electronics.com
Rev H 10/2022 Page 1
High Voltage Isolator
OPI1268
Electrical Specifications
Absolute Maximum RaƟngs (TA = 25° C unless otherwise noted)
Storage Temperature
Opera ng Temperature
Input‐to‐Output Isola on Voltage(2)
Lead Soldering Temperature (1/16” (1.6 mm) from case for 5 seconds with soldering iron)(3)
Input Diode
Con nuous Forward Current
Peak Forward current (1 µs pulse width, 300 pps)
Reverse Voltage
Power Dissipa on(1)
Output IC
Maximum Supply Voltage
Power Dissipa on(4)
Maximum Output Voltage
Maximum Output Current
‐40° C to +100° C
‐40° C to +100° C
16 kVDC
260° C
30 mA
3.0 A
3.0 V
100 mW
7 V
100 mW
18 V
25 mA
Electrical CharacterisƟcs (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 addi onal informa on—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
ICCL
Low Level Supply Current
‐
6.7
10
mA
IF = 0, VCC = 5.25 V
IF = 10.0 mA, VCC = 5.25 V
Coupled CharacterisƟcs (VCC = 5 V)
CIO
Coupling Capacitance
‐
‐
2
pF
Input and output leads shorted.
tPLH
Propaga on Delay to Low Output Level
‐
‐
200
tPHL
Propaga on Delay to High Output Level
‐
‐
100
ns
VCC = 5 V, IF = 30 mA, RL = 560 Ω
IISO
Isola on Leakage Current(5)
‐
‐
20
µA
VISO = 19.2 kV dc
IF+
LED Posi ve Going Threshold Current
0.8
1.7
5.0
mA
VCC = 5 V, IOL = 8.0 mA
Notes:
(1) Derate LED linearly 1.33 mW/°C above 25° C.
(2) UL recogni on is for 16 kV dc for one minute.
(3) RMA flux is recommended. The dura on can be extended to 10 seconds maximum when flow soldering. Refer to Applica on note 260 for recom‐
mended wave solder profile.
(4) Derate linearly 1.33 mW/°C above 25° C.
(5) Measured with input leads shorted together and output leads shorted together in air with a maximum rela ve humidity of 50 %.
General Note
TT Electronics reserves the right to make changes in product specifica on without
no ce or liability. All informa on is subject to TT Electronics’ own data and is
considered accurate at me of going to print.
© TT electronics plc
TT Electronics | OPTEK Technology
2900 E. Plano Pkwy, Plano, TX 75074 | Ph: +1 972 323 2200
www. electronics.com | sensors@ electronics.com
Rev H 10/2022 Page 2
High Voltage Isolator
OPI1268
IF(+) vs Ta
V(out) vs IF
10
IF - Forward Current - mA
8
V(out) - Typical Voltage Low Output - V
6.0
VCC = 5.0 V
IOL = 8.0 mA
6
4
2
5.0
Vcc = 4.5 V
IOL = 8 mA
Ta = 25 °C
4.0
3.0
2.0
1.0
0.0
0
-40
-20
0
20
40
60
80
0
100
1
2
3
4
5
IF - Forward Current - mA
Ta - Ambient Temperature - °C
Vol vs Ambient Temperature
IOH vs. Ambient Temperature
0.6
8
7
Vcc = 5.0 V
VOH = 18.0 V
VCC=4.50V
IOL=8mA
IF=10mA
6
0.4
5
IOH - A
VOL - Low Output Voltage - V
0.5
0.3
4
3
0.2
2
0.1
1
0
0.0
-40
-20
0
20
40
60
80
-40
100
-20
0
40
60
80
100
Variable Diode Forward Current (IF) vs Propagation Delay Time - (tPLH, tPHL)
Supply Current vs ICCH and ICCL vs Ambient temperature
9
120
8
tPLH, tPHL - Typical Propagation Delay Time - ns
ICCL
6
5
ICCH
4
VCC = 5.0 V
RL = 560 Ω
f = 100 kHz
110
VCC = 5.25
IF = 10mA
7
Supply Current - mA
20
Ta - Ambient Temperature - °C
Ta - Ambient Temperature - C
VCC = 5.25
IF = 0mA
3
2
1
100
90
Avg. tPLH Delay
Avg. tPHL Delay
80
70
60
50
40
0
30
-40
-20
0
20
40
60
80
Ta - Ambient Temperature -c
General Note
TT Electronics reserves the right to make changes in product specifica on without
no ce or liability. All informa on is subject to TT Electronics’ own data and is
considered accurate at me of going to print.
© TT electronics plc
100
1
2
3
4
5
6
7
8
9
10
11
12
IF - Diode Forward Current - mA
TT Electronics | OPTEK Technology
2900 E. Plano Pkwy, Plano, TX 75074 | Ph: +1 972 323 2200
www. electronics.com | sensors@ electronics.com
Rev H 10/2022 Page 3
High Voltage Isolator
OPI1268
dV/dT
OPI1268 dV/dT Emitter
OPI1268 dV/dT Sensor
0.5
0.5
0.4
OPI1268 On (Spec 2 Volt s)
0.2
0.2
0.1
0.1
0
-0.1
OPI1268 On (Spec 2 Volt s)
OPI1268 Of f (Spec 0.8 Volt s)
0.3
Volts
0
-0.1
-0.2
-0.2
-0.3
-0.4
-0.3
Pulse Leading Edge
Pulse Trailing Edge
2,000 volt s Peak-Peak
2,000 volt s Peak-Peak
Rise or Fall Time 20 ns 10%-90%
Rise or Fall Time 20 ns 10%-90%
-0.4
-0.5
Pulse Leading Edge
Pulse Trailing Edge
2,000 volt s Peak-Peak
2,000 volt s Peak-Peak
Rise or Fall Time 20 ns 10%-90%
Rise or Fall Time 20 ns 10%-90%
Time (ns)
General Note
TT Electronics reserves the right to make changes in product specifica on without
no ce or liability. All informa on is subject to TT Electronics’ own data and is
considered accurate at me of going to print.
© TT electronics plc
950
900
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
0
950
900
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
0
50
-0.5
50
Vo lts
0.4
OPI1268 Of f (Spec 0.8 Volt s)
0.3
Time (ns)
TT Electronics | OPTEK Technology
2900 E. Plano Pkwy, Plano, TX 75074 | Ph: +1 972 323 2200
www. electronics.com | sensors@ electronics.com
Rev H 10/2022 Page 4
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