JOG-01313
001
Rev. 3 [10. 2008]
Optical Components
OF3500B
156Mbps APD-preamplifier coaxial module with a single mode fiber
1. DESCRIPTION
OF3500B is an optical receiver module for digital transmission systems up to 156Mbps. It uses an InGaAs
avalanche photodiode with a low noise preamplifier. Package style is a hermetically sealed coaxial package with a
single mode fiber pigtail.
2. FEATURES
Data rate up to 156Mbps
High responsivity InGaAs-APD : 8.5A/W
Wide dynamic range
Typical sensitivity : -47.5dBm
Low noise
Small coaxial package
3. APPLICATION
SONET OC-3/SDH STM-1 applications
Long-haul transmission systems up to 156Mbps
4. OPTICAL AND ELECTRICAL CHARACTERISTICS
Parameter
Wavelength
APD Breakdown Voltage
Temperature Coefficient of
VBR
APD Responsivity
Responsivity
Bandwidth
Sensitivity
(Wavelength=1550nm , Tc =25°C , Vcc=3.3V, unless otherwise specified)
Test Conditions
Min. Typ. Max. Unit
Symbol
λ
--
1250
--
1620
nm
VBR
I
D
=10 A
40
50
70
V
γ
R
APD
R
BW
Prmin
--
λ=1.55
m, M=1
λ=1.31
m, M=1
R
L
>500Ω, M=10,
Pin=-43dBm, Differential
f
3dB
, R
L
>500Ω, M=10
155Mbps, NRZ,
BER=10
-10
, PRBS2
23
–1,
Rext=12.0dB*, M=Mopt.
155Mbps, NRZ,
BER=10
-10
, PRBS2
23
–1,
M=3
Supply Current
Recommended TIA Supply Voltage
I
CC
V
CC
Pin = 0mW
0.05
0.80
0.75
160
120
--
0.09
0.85
0.85
--
--
-47.5
0.12
--
--
--
--
-46.5
V/°C
A/W
kV/W
MHz
dBm
Overload
Prmax
-7
--
-5
21
3.3
--
--
26
3.5
-27
dBm
mA
V
dB
Optical Return Loss
*) Extinction ratio of LD source.
ORL
--
--
3.1
--
1/5
001
JOG-01313 Rev.3
OF3500B
5. ABSOLUTE MAXIMUM RATING
(Tc = 25 °C, unless otherwise specified)
Parameter
APD Bias Voltage
TIA Supply Voltage
APD Forward Current
APD Reverse Current
Operating Temperature
Storage Temperature
Symbol
V
B
V
cc
IF
IR
Tc
Tstg
Rating
0 to VBR
4.5
2
2(cw)
-40 to +85
-40 to +85
Unit
V
V
mA
mA
°C
°C
6. CONNECTOR AND FIBER SPECIFICATIONS
Parameter
Type
Flame Rating
Mode Field Diameter
Cladding Diameter
Jacket Diameter
Length
Standard Connector
Specifications
SM
UL94 V-0
UL1581 VW-1
10
125
900
1 (Min.)
FC/PC or SC/PC
Unit
--
--
--
m
m
m
m
--
7. ORDERING INFORMATION
OF3500B - _ _ _ _
Flange Connector
WF
FC
SC
NF
LC
MU
ex.) OF3500B-WFFC
OF3500B with a flange and FC connector.
2/5
001
JOG-01313 Rev.3
OF3500B
8. OUTLINE DRAWING
All dimensions in millimeters
Package No. OF3500B-WF__
Package No. OF3500B-NF__
Pin Connection
1
2
3
4
5
V
CC
V
APD
V
OUT–
V
OUT+
GND(case)
APD
2. V
APD
1. V
CC
4. V
OUT+
3. V
OUT–
Pre-Amp
5. GND(case)
3/5
001
JOG-01313 Rev.3
OF3500B
NOTE
Under the condition “V
APD
set, but with V
cc
absent”, optical inputs may result in damage to the TIA. It is necessary
to set V
cc
before optical inputs to prevent such trouble.
SAFETY INFORMATION ON THIS PRODUCT
Caution
The product contains gallium arsenide, GaAs.
GaAs vapor and powder are hazardous to human health if inhaled, ingested or
swallowed.
GaAs
Do not destory or burn the product.
Product
Do not crush or chemically dissolve the product.
Do not put the product in the mouth.
Observe related laws and company regulations when discarding this product.
The product should be excluded from general industrial waste or household
garbage.
Caution
A glass-fiber is attached on the product. Handle with care.
Optical Fiber When the fiber is broken or damaged, handle carefully to avoid injury from
the damaged part or fragments.
4/5
001
JOG-01313 Rev.3
OF3500B
Notice
No copying or reproduction of this document, in part or in whole, is permitted without the consent of LAPIS
Semiconductor Co., Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing LAPIS Semiconductor's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be
obtained from LAPIS Semiconductor upon request.
Examples of application circuits, circuit constants and any other information contained herein illustrate the
standard usage and operations of the Products. The peripheral conditions must be taken into account when
designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document. However, should
you incur any damage arising from any inaccuracy or misprint of such information, LAPIS Semiconductor
shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and examples of
application circuits for the Products. LAPIS Semiconductor does not grant you, explicitly or implicitly, any
license to use or exercise intellectual property or other rights held by LAPIS Semiconductor and other parties.
LAPIS Semiconductor shall bear no responsibility whatsoever for any dispute arising from the use of such
technical information.
The Products specified in this document are intended to be used with general-use electronic equipment or
devices (such as audio visual equipment, office-automation equipment, communication devices, electronic
appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While LAPIS Semiconductor always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard against the
possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such
as derating, redundancy, fire control and fail-safe designs. LAPIS Semiconductor shall bear no responsibility
whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the
instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or system which
requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat
to human life or create a risk of human injury (such as a medical instrument, transportation equipment,
aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). LAPIS
Semiconductor shall bear no responsibility in any way for use of any of the Products for the above special
purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales
representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may be controlled
under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit
under the Law.
Copyright 2008 - 2011 LAPIS Semiconductor Co., Ltd.
5/5
