1
Technical Data Sheet
February 2002
FIBEROPTICS DI VISION
RX77R2A
2.5 Gbps Receiver Module with Clock Recovery
Features
¾ Multisource agreement (MSA) compatible
¾ Typical sensitivity
- APD : - 32dBm (mini-DI L)
¾ Wide oper at ing case temper at ur e r ange :
- APD : -15 °C to +75 °C
¾ Operation at 1310nm or 1550nm
¾ +5.0V single power supply
¾ Multi bit rate oper ation : 155.52Mbps,
622.08Mbps, 1244.016Mbps
and 2488.032Mbps.
¾ Loss of signal (LOS) indicat ion
Applications
¾ High speed data com m unication
¾ Telecommunications :
9 SONET/SDH
9 Metropolitan area network s
9 Wide area networks
Product Code
Product Code PD Type PD Module Type
RX77R2A-BWSB4 APD Mini-DIL
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Description
The RX77R2A-type receiver module is designed for use in high speed data
communication and telecommunication systems. The receiver operates at SONET
OC-1, OC-3, OC-12 and OC-48 rates as well as at ITU-T SDH rates.
The receiver consists of either InGaAs Avalanche photodetector or PIN photo-
detector, transimpedance amplifier, high voltage dc-d c converter for APD and a multi
rate clock and data recovery IC(CDR) .
The receiver is compatible with the MSA specif ication, which has a space-saving 24-
pin DIP package.
Pin information
RX77R2A
Pin Definition Pin Definition
1 No internal connection (NIC) 13 No internal connection (NIC)
2 No internal connection (NIC) 14 Ground(GND)
3 Loss of signal(LOS(1)) 15 Ground(GND)
4 Ground (GND) 16 Ground(GND)
5 Negative clock output(CLK(2)) 17 Ground(GND)
6 Positive clock output(CLK(2)) 18 No internal connection (NIC)
7 Ground(GND) 19 Ground(GND)
8 +5V power supply(VCC) 20 Ground(GND)
9 Ground(GND) 21 No internal connection (NIC)
10 Positive data output(DATA(2)) 22 +5V power supply(VCC)
11 Negative data output(DATA(2)) 23 Bit rate select input(BRS1(3))
12 Ground(GND) 24 Bit rate select input(BRS0(3))
(1) TTL level. High level indicates the absence of a valid optical input signal.
(2) AC coupled output.
(3) Bit rate select input(TTL level).
BRS0 BRS1 Input bit rate
High(open) High(open) 2488.32Mbps
Low Low 1244.16Mbps
High(open) Low 622.08Mbps
Low High(open) 155.52Mbps
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Module Performance Characteristics
Electrical characteristics
Parameter Symbol Min Typ(1) Max Unit
Bit rate
2488.07
2488.32
1244.16
622.08
155.52
2488.57
Mbps
DC power supply voltage VCC 4.75 5.0 5.25 V
DC power supply current ICC 250 mA
Power dissipation PDIS 1.3 W
Output data / clock voltage swing(2)
Single output
Differential output
SV
DV
0.3
0.6
0.8
1.6
VP-P
VP-P
Clock/Data alignment TCDA ±40 ps
Clock duty cycle - 45 55 %
Jitter generation JG ITU-T G.958 Compliant
Jitter transfer JP ITU-T G.958 Compliant
Jitter tolerance - ITU-T G.958 Compliant
Output data rise time (20~80%) tR 100 ps
Output data fall time (20~80%) tF 100 ps
LOS output voltage(3)
High
Low
VFOH
VFOL
4.0
5.0
0
VCC
0.4
V
V
(1)
All typical values measured at room temperature and BOL.
(2) Internally, AC coupled with 50Ω internal termination. If single-ended input is driven, the unused pin must be
terminated in 50Ω.
(3) TTL output
Optical characteristics
Parameter Symbol Min Typ(1) Max Unit
Sensitivity
APD PMIN
-32(2)
dBm
Maximum input power
APD PMA
-7
dBm
LOS response time - 1000 µs
(1) All typical values measured at room temperature and BOL.
The mini-DIL type PD module gives a better optical performance than coaxial type PD module does.
(2) sensitivity of mini-DIL type module
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Absolute Maximum Ratings
These are absolute maximum ratings only. Higher stress than these ratings may
adversely affect device reliability or cause permanent damage to the device.
Parameter Symbol Min Max Unit
Supply voltage VCC 6 V
Operating case temperature rang
APD
TC
-15
75
°C
Storage case temperature range TSTG -40 85 °C
Relative humidity RH 85 %
Fiber bend radius 30 mm
Lead soldering temperature/time 260/10 °C/s
Outline Diagram
Dimensions are in millimeters (inches).
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Performance Characteristics
1. Eye and Clock Diagram of Receiver with mini-DIL APD
(Typical Output Waveform @Tc=25 ºC, Pin=-32 dBm)
2.5 Gbps Data Clock
Horizontal Ax is : 100 psec/div
Vertical Axis : 200 mV/div
1.25 Gbps Data Clock
Horizontal Ax is : 200 psec/div
Vertical Axis : 200 mV/div
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622 Mbps Data Clock
Horizontal Ax is : 500 psec/div
Vertical Axis : 200 mV/div
155 Mbps Data Clock
Horizontal Axis : 2000 psec/div
Vertical Axis : 200 mV/div
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Ordering Information
Receiver Selection Code :
PD type :
See table on PD type
Cdr option :
See table on cdr option
Fiber type :
See table on fiber type
Fiber length :
See table on fiber length
Connector type
See table on connector type
PD Type
Code PD Type
B APD
Cdr option
Code Cdr option
W With cdr(3R)
O Without cdr(2R)
Fiber type :
Code Fiber Type
S Single
M Multi
P PCF
G GOF
C Clad
Fiber Length
Code Fiber Length
A 0.5m
B 1.0m
C 1.5m
D 2.0m
E 2.5m
R 7 X R 7 2 A
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Fiber Connector Type
Code Connector Type
1 FC/PC
2 FC/APC
3 ST/PC
4 SC/PC
5 Biconic
6 No conn.
7 MU
8 LC
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Contact us
Fiberoptics Division
Telecommunication Network Business
Samsung Electronics Co.,Ltd.
7 th Fl., Samsung Main Bldg. 250, 2-Ka,
Taepyung-Ro, Chung-Ku, Seoul,
Korea 100-742
Phone: (82) 2-751-3278
Fax: (82) 2-751-2687
E-mail: opto@samsung.com
URL: www.samsungfiberoptics.com
Samsung Electronics Co., Ltd. reserves the right to change products and specifications without notice.
Copyright 2002 © Samsung Electronics Co, Ltd.
All rights Reserved.