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 8/2012
Page 1 of 3
Fiber Optic Receiver
OPF2418, OPF2418T, OPF2418TC
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
OPF2418 Family
• Up to 194 Mbps operation
• 850nm wavelength
• ST® style port
• Wave solderable
• Wide temperature range
The OPF2418 family is a low cost solution for high speed fiber optic communications designs. The internal lensing of this re-
ceiver’s design allows optimal response for fiber sizes of 100µm and below. The receiver is comprised of a high speed, low
noise, photodiode coupled to a transimpedance amplifier (TIA). The photodiode/TIA combination produces an output voltage
that is proportional to the input light amplitu de. This hybrid approach solves many of the problems of high speed dat a link de-
signs by placing the photodiode close to the T IA. The amplification of the TIA makes the output much less susceptible to EMI.
The output of the OPF2418 is an analog, low impedance, emitter follower voltage sourc e. Subsequent circuitry can b e utilized
to convert the analog voltage to ECL/TT L for digital data rates up to 155 Mbps. The OPF2418 is available with either standard
or threaded panel mount ST® receptacles. The threaded version is also available in conductive plastic.
RoHS
PIN FUNCTION
1 Not Connected
2 VOUT
3 VEE
4 Not Connected
5 Not Connected
7 VEE
6 VCC
8 Not Connected
Pins 3 & 7 are electrically connected to the header.
Pins 1,4,5 & 8 are mechanically connected together.
“T” suffix = Threaded ST® package
“TC” suffix = Threaded, conductive ST® packag e
ST® is a registered trademark of AT&T.
ESD Class 2
Fiber Optic Receiver
OPF2418, OPF2418T, OPF2418TC
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 8/2012
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.
Absolute Maximum Ratings
TA = 25° C unless otherwise noted
Storage Temperature Range -55° C to +85° C
Operating Temperature Range -40° C to +85° C
Lead Soldering Temperature(1) 260° C
Supply Voltage -0.5 V to 6.0 V
Output Current 25 mA
Output Pin Voltage -0.5 V
Electrical/Optical Characteristics (TA = 25°C unless otherwise noted)
Notes:
1. Maximum of 5 seconds with soldering iron. Duration can be
extended to 10 seconds when flow soldering. RMA flux is
recommended.
SYMBOL PARAMETER MIN TYP MAX UNITS CONDITIONS
R Responsivity 5.3 7.0 9.6 mV/µW λp = 850 nm, f = 50 MHz
4.5 11.5 -40 °C ≤ TA ≤ +85 °C
VNOISE RMS Output Noise Voltage 0.40 0.59 mV 75 MHz Bandwidth Filtered, PR = 0
0.70 Unfiltered Band width F iltered
PR = 0
PN RMS Equivalent Optical Noise
Input Power 0.050 0.065 µW 100 MHz Bandwidth Filtered,
PR = 0
PR 175 µW
150 40 °C ≤ TA ≤ +85 °C
VODC DC Output Volt age -4.2 -3.1 -2.4 V PR = 0
IEE Supply Current 9 15 mA RL = ∞
BW Bandwidth 155 200 MHz -3dB electrical
tr, tf Rise Time, Fall Time 2.0 2.6 ns f = 50 MHz, PR = 100 µW peak,
RL = 511 Ω, CLOAD = 5 pF
PWD Pulse W idth Distortion 0.4 2.5 ns f = 50 MHz, PR = 150 µW peak
PSRR Power Supply Rejection R atio 20 dB f = 10 MHz
Peak Received Optical Power
Application Circuit
Note that the 10Ω resistor
and bypass capacitor are
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 8/2012
Page 3 of 3
Fiber Optic Receiver
OPF2418, OPF2418T, OPF2418TC
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Mechanical Data
DIMENSIONS ARE IN INCHES [MILLIMETERS]
OPF2418T
OPF2418TC
OPF2418