Optek Technology, Inc.
1215 West Crosby Road
Carrollton, Texas 75006
(972) 323-2200
www.optekinc.com
850nm Fast Ethernet
Transceiver in 1 x 7 SMD
Package
Technical Data
OPF5020
Features
Small Form Factor surface mount package
MT-RJ Receptacle
Low cost 850 nm LED design
Link distance up to 300m at 125Mbps
Fully complies with the 100BASE-SX Fast
Ethernet Standard (TIA-785)
Single +5V power supply
Description
Optek's OPF5020 is a 125Mbps SFF transceiver for use in
data communications applications. It utilizes a MT-RJ dual
fiber receptacle which features a small size and intuitive latch-
ing mechanism design which allows for higher density imple-
mentations and easier end-user installation.
The transmitter is an 850 nm GaAlAs LED, configured for
optimum transceiver performance when used in conjunction
with a low-side driver. The coupling efficiency of the LED and
optical system allows the device to be used at low current
levels, reducing power consumption and increasing system
reliability.
The receiver consists of a high speed PIN photodiode coupled
to a low noise transimpedance amplifier. The receiver output
is a low impedance analog source. The analog representa-
tion of the received optical input can be easily converted to
PECL or TTL levels by external circuitry to be used in digital
modes up to 125Mbps, NRZ.
Combining the OPF5020 with commercially available LED
driver and post amplifier circuits results in a physical layer
medium dependent (PMD) sub-layer for communication be-
tween nodes of a fiber network. Optek Application Bulletin
217 presents an example PMD design with typical receiver
sensitivity of 30dBm at a BER of 2.5 x 10
-10
, operating full
duplex with either a 2
23
-1 or worst case FDDI data pattern.
The OPF5020 has been fully tested in accordance with Bell-
core 468. See Application Bulletin 219 for full details.
Storage Temperature Range
-40 to +85 C
Operating Temperature Range
0 to +70 C
Soldering Temperature (Soldering Iron)
260 C for 10 Seconds
Soldering Temperature (Vapor Phase Reflow)
235 C for 30 Seconds
Absolute Maximum Ratings
Supply Voltage Range
-0.5 to 6V
Output Current
25mA
Transmitter
Forward Input Current (DC)
100 mA
Reverse Input Voltage
3.5 V
Receiver
Notes:
1.
All transmitters are subjected to 100% burn-in testing. Test condi-
tions are 96 hours at 60 mA continuous current and 85C ambient
temperature.
2.
This component is susceptible to damage from electrostatic dis-
charge (ESD). Normal electronic component handling precautions
should be observed during handling and assembly of this compo-
nent to avoid damage or performance degradation.
3.
Safety Information:
Class 1 Laser Product (850nm Light Emitting Diode)
TUV certified to EN60825-1:1994+A11+A2 and IEC
60950:1999/ EN60950:2000
Optek Technology, Inc.
1215 West Crosby Road
Carrollton, Texas 75006
(972) 323-2200
www.optekinc.com
PARAMETER
MIN
TYP
MAX
UNITS
TEST CONDITION
Forward Voltage
1.3
1.7
2.1
V
I
F
= 60mA
Reverse Input Breakdown Voltage
3.5
9.0
V
I
R
= 100A
Peak Emission Wavelength
820
840
865
nm
I
F
= 60mA
Spectral Bandwidth (FWHM)
60
nm
I
F
= 60mA
SYMBOL
V
F
V
R
P
BW
C
T
Capacitance
55
pF
V = 0 V, f = 1 MHz
P
T
Peak Output Optical Power
(1)
-16.0
-9.0
dBm
I
F
= 60mA
P
T
/ T
Optical Power Temperature Coefficient
-0.008
dBm/
H
C
I
F
= 60mA
t
r
/t
f
Rise/Fall Time
(2)
3.5
6.5
ns
I
F
= 60mA, No Pre-bias
OPF5020 Technical Data
Transmitter Electrical/Optical Characteristics
Operating Temperature Range 0 to 70C unless otherwise noted; Rx Vcc =
4.75 to 5.25V
PARAMETER
MIN
TYP
MAX
UNITS
TEST CONDITION
Responsivity
(3)(4)
5.3
7.4
-12.0
mV/W
P
= 840nm, P
R
= 63W
RMS Output Noise Voltage
530
V
Noise BW = 100MHz; P
R
= 0W
Equivalent Optical Noise Input Power
(RMS)
-41.0
dBm
Noise BW =100MHz
Maximum Input Optical Power
(3)(4)(5)
175
W
Output Impedance
30
f = 50MHz
DC Output Voltage
1.00
2.1
2.80
V
P
R
= 0W, R
L
= 500
to Rx Vee
Duty Cycle Distortion
0.4
1.2
ns
P
R
= 75W
Bandwidth
100
125
MHz
-3dB Electrical
SYMBOL
R
P
V
NO
P
N
P
R(MAX)
Z
O
V
ODC
DCD
BW
I
CC
Power Supply Current
9
15
mA
R
L
= Open
t
r
/t
f
Rise/Fall Time
(3)(4)
3.5
6.5
ns
P
R
= 63W; C
L
< 15pF
Receiver Electrical, Optical & Dynamic Characteristics
Operating Temperature Range 0 to 70C unless otherwise noted; Rx Vcc =
4.75 to 5.25V
Typical values are at TA =25 C, Rx Vcc - Rx Vee = 5.00V
Notes:
1.
Coupled optical power using a 2 to 5 meter length of 62.5/125 m fiber cable, NA = 0.28
2.
Rise and Fall times shown here are valid for a 50
driver impedance. Rise and fall times obtained using commercial LED driver circuits can
be significantly lower. Refer to Application Bulletin 217 for more details.
3.
P
R
is defined as average coupled optical power at the receiver input.
4.
Square wave light input: 12.5MHz, tr and tf < 2.0ns, extinction ratio < 10%; AC coupled; 500
load to Rx Vee.
5.
Defined with DCD < 1.2ns.
6.
Square wave light input: 50MHz, tr and tf < 2.0ns, extinction ratio < 10%; AC coupled; 500
load to Rx Vee.
Optek Technology, Inc.
1215 West Crosby Road
Carrollton, Texas 75006
(972) 323-2200
www.optekinc.com
OPF5020 Technical Data
PIN 1
Optek Technology, Inc.
1215 West Crosby Road
Carrollton, Texas 75006
(972) 323-2200
www.optekinc.com
OPF5020 Technical Data
Packaging Information
REEL
Material: Antistatic, Type A, 56mm LOKREEL
Overall Diameter: 13 inches (325mm)
Hub Diameter: 4 inches (100mm)
Hub Width: 56.5mm
Surface: 10
11
ohm/sq (maximum rating)
POCKET TAPE
Material: Antistatic, HMS-10-13-A
Width (W): 56mm
Pitch (P): 24mm pocket-to-pocket
Sprocket Pitch: 4mm
Pocket Depth (K
O
): 10.92mm
COVER:
Material: Conductive, Pressure Sensitive
Width : 49.5mm
OTHER PROPERTIES:
Parts per Reel: 200
Leader: 17 Pockets
October 2002
OPF5020, Rev. B
Optek reserves the right to make changes at any time in order to improve design and to supply the best product possible.
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