OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Issue 2.1 1/07
Page 1 of 3
Fiber Optic Transmitter
OPF694 Series
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Applications
♦ Industrial Ethernet equipment
♦ Copper-to-fiber media conversion
♦ Intra-system fiber optic links
♦ Video surveillance systems
OPF694 Series
• Low Cost 850 nm LED technology
• High thermal stability
• High optical coupling efficiency to multimode fiber
• Metal ST* style receptacle
• Industrial temperature range
The OPF694 series fiber optic transmitters are high performance devices packaged for data communication links. This trans-
mitter is an 850 nm GaAlAs LED and is specifically designed to efficiently launch optical power into either 50/125µm or
62.5/125µm diameter multimode fiber. Two power ranges with upper and lower limits are offered which allows the designer to
select a device best suited for the application.
This product’s combination of features including high speed and efficient coupled power makes it an ideal transmitter for inte-
gration into all types of data communications equipment.
Typical Coupled Power
IF = 100mA, 25°C
Fiber Size Type N.A. OPF694-1
50/125 µm Graded Index 0.20 -19dBm
62.5/125 µm Graded Index 0.28 -15dBm
100/140 µm Graded Index 0.29 -11dBm
200/300 µm Step Index 0.41 -5dBm
OPF694-2
-16dBm
-12dBm
-8dBm
-2dBm
* - ST is a registered trademark of Fitel USA Corp.
RoHS
Fiber Optic Transmitter
OPF694 Series
OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Issue 2.1 1/07
Page 2 of 3
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Electrical/Optical Characteristics (TA = 25°C unless otherwise noted)
Absolute Maximum Ratings
TA = 25o C unless otherwise noted
Storage Temperature Range -55° C to +100° C
Operating Temperature Range -40° C to +85° C
Lead Soldering Temperature(1) 260° C
Continuous Forward Current(2) 100 mA
Maximum Reverse Voltage 1.0 V
Notes:
1. Maximum of 5 seconds with soldering iron. Duration can be extended to 10 seconds when flow soldering. RMA flux is recommended.
2. De-rate linearly at 1.0mA /°C above 25°C .
3. No Pre-bias.
4. All Optek fiber optic LED products are subjected to 100% burn-in as part of its quality control process. The burn-in conditions are 96
hours at 100mA drive current and 25°C ambient temperature.
SYMBOL PARAMETER MIN MAX UNITS CONDITIONS
PT50
Total Coupled Power OPF694-1 -19.0 -14.0 dBm
50/125 mm Fiber NA = 0.20 OPF694-2 -16.0 -11.0 dBm
VF Forward Voltage 1.5 2.1 V IF = 100 mA
VR Reverse Voltage 1.8 V IR = 100 µA
λ Wavelength 830 870 nm IF = 50 mA
Δλ Optical Bandwidth nm IF = 50 mA
tr,tf Rise and Fall Time 6.5 ns IF = 100 mA; 10% to 90%(3)
IF = 100 mA
TYP
850
35
4.5
-40°C
80°C
Temperatures are Stepped in
20°C increments.
0 20 40 60 80 100
0
0.2
1.2
0.4
0.6
0.8
1.0
1.4
Relative Coupled Po wer vs.
Forward Current
Forward Current (mA)
Relative Coupled Power
-40°C
80°C
Temperatures are Stepped in
20°C increments.
0 20 40 60 80 100
1.2
1.3
1.8
1.4
1.5
1.6
1.7
2.0
Typical Forward Voltage vs.
Forward Current
Forward Current (mA)
Relative Coupled Power
1.9
OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Issue 2.1 1/07
Page 3 of 3
Fiber Optic Transmitter
OPF694 Series
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Mechanical Data
Application Circuit: 155Mbps TTL Drive Circuit
U1
U1
U1
U1
1
2
3
5
4
6
8
9
10
13
12
11
+
14
7
R1
C1
R2
R3
A
K
C2 C3
Vcc +5V
TTL IN
Part Symbol Tol.
C1 Capacitor pF 20%
C2 Capacitor pF 20%
C3 Capacitor µF 20%
R1 Resistor Ω5%
R2 Resistor Ω5%
R3 Resistor Ω5%
U1 IC, Quad NAND - -
33
270
74ACTQ00
75
100
10
33
Descrip t ion Valu e/ Typ e
Refer to Application Bulletin 220 for complete details.
Anode (A) Cathode (K)
Case
