GPC-XX4G-08CD
4.25G CWDM SFP 80km Transceiver
Features

Single 3.3 V supply

Supports 1.06/2.125/4.25Gb/s Fiber Channel Operation

Gigabit Ethernet compatible

18 CWDM DFB Laser and APD photo detector

SFP MSA SFF-8074i compliant

Digital Diagnostic SFF-8472 compliant

Digital Diagnostic Monitoring:
Internal Calibration or External Calibration

Distance up to 80 km Transmission

Compatible with RoHS

Operating case temperature:
Standard : 0 to +70°C
Applications
• Tri Rate 1.0625 / 2.125 / 4.25Gbp/s Fiber Channel
• 1.25 Gb/s 1000 BASE Ethernet
Description
The transceiver consists of three sections: a DFB laser transmitter, a APD photodiode integrated
with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety
requirements.
The transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement
(MSA)1. They are compatible with Fiber Channel per FC-PI-2 Rev. 10.0.
Also simultaneously
compatible with Gigabit Ethernet as specified in IEEE Std 802.3.
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Module Block Diagram
Absolute Maximum Ratings
Table 1 - Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
Units
Notes
Power Supply Voltage
Vcc-Vee
0
3.6
V
-
Storage Temperature
Tst
-40
+85
°C
-
Operating Humidity
RH
5
90
%
Non-condensing
Recommended Operating Conditions
Table 2 - Recommended Operating Conditions
Parameter
Symbol
Min
Tc
0
Power Supply Voltage
Vcc
3.13
Power Supply Current
Icc
Operating Case Temperature
Standard
Typical
3.3
Max
Unit
+70
°C
3.47
V
300
mA
Optical and Electrical Characteristics
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Table 3 - Optical and Electrical Characteristics
Parameter
Symbol
Min
Typical
Max
Unit
Notes
Transmitter
Data Rate
4.25
Centre Wavelength
λc
Spectral Width (-20dB)
∆λ
Side Mode Suppression Ratio
Average Output Power(BOL)
Extinction Ratio
Average Launch Power-OFF
Transmitter
-6.5nm
SMSR
20
Pout
2
ER
5
nm
1
nm
5
dBm
1
dB
-40
dBm
130
ns
2400
mV
120
Ω
Fiber Channel Compliant
Optical Rise/Fall Time (20%~80%)
tr/tf
Data Input Swing Differential
VIN
200
Input Differential Impedance
ZIN
90
TX Fault
+6.5nm
dB
Pout
Optical Eye Diagram
TX Disable
1XXX
Gb/S
100
Disable
2.0
Vcc
V
Enable
0
0.8
V
2.0
Vcc
V
0
0.8
V
1360
nm
dBm
Fault
Normal
2
Receiver
Centre Wavelength
Receiver Sensitivity(BOL)
λc
1260
Sen@4FC
-24
Sen@2FC
-26
Sen@FC
-28
LOS De-Assert
LOSD
-25
LOS Assert
LOSA
LOS Hysteresis
-28
0.5
Data Output Swing Differential
Loss of Signal (LOS) Assert Time
Loss of Signal (LOS) Deassert
Time
LOS
dBm
dBm
6
dB
-20
dB
820
mV
TAssert
500
nS
TDeassert
500
nS
Vcc
V
0.8
V
Receiver Reflectance
Vout
High
400
2.0
Low
Notes:
1. The optical power is launched into SMF.
2. PECL input, internally AC-coupled and terminated.
3. Measured with a PRBS 27-1 test pattern @4250Mbps, BER ≤1×10-12.
4. CML Output,internally AC-coupled.
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3
4
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Timing and Electrical
Table 4 - Timing and Electrical
Parameter
Symbol
Min
Typical
Max
Tx Disable Negate Time
t_on
1
ms
Tx Disable Assert Time
t_off
10
µs
Time To Initialize, including Reset of Tx Fault
t_init
300
ms
Tx Fault Assert Time
t_fault
100
µs
Tx Disable To Reset
t_reset
LOS Assert Time
t_loss_on
100
µs
LOS De-assert Time
t_loss_off
100
µs
Serial ID Clock Rate
f_serial_clock
400
KHz
MOD_DEF (0:2)-High
VH
Vcc
V
MOD_DEF (0:2)-Low
VL
0.8
V
10
Unit
µs
2
Diagnostics
Table 5 – Diagnostics Specification
Parameter
Range
Unit
Accuracy
Calibration
Temperature
0 to +70
°C
±3°C
Internal / External
Voltage
3.0 to 3.6
V
±3%
Internal / External
Bias Current
0 to 100
mA
±10%
Internal / External
TX Power
2 to 5
dBm
±3dB
Internal / External
RX Power
-26 to -3
dBm
±3dB
Internal / External
CWDM Wavelength (0~70°C)
Band
O-band Original
Suffix
A
B
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Wavelength (nm)
1270
1290
Feb 28 / 2013
E-band Extended
S-band Short Wavelength
C-band Conventional
L-band Long Wavelength
C
D
E
F
G
H
I
J
1310
1330
1350
1370
1390
1410
1430
1450
K
1470
L
M
N
O
P
Q
R
1490
1510
1530
1550
1570
1590
1610
Digital Diagnostic Memory Map
The transceivers provide serial ID memory contents and diagnostic information about the present
operating conditions by the 2-wire serial interface (SCL, SDA).
The diagnostic information with internal calibration or external calibration all are implemented, including
received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage
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monitoring and temperature monitoring.
The digital diagnostic memory map specific data field defines as following.
Pin Definitions
Pin Diagram
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Pin Descriptions
Pin
Signal Name
Description
Plug Seq.
Notes
1
VEET
Transmitter Ground
1
2
TX FAULT
Transmitter Fault Indication
3
Note 1
3
TX DISABLE
Transmitter Disable
3
Note 2
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4
MOD_DEF(2)
SDA Serial Data Signal
3
Note 3
5
MOD_DEF(1)
SCL Serial Clock Signal
3
Note 3
6
MOD_DEF(0)
TTL Low
3
Note 3
7
Rate Select
Not Connected
3
8
LOS
Loss of Signal
3
9
VEER
Receiver ground
1
10
VEER
Receiver ground
1
11
VEER
Receiver ground
1
12
RD-
Inv. Received Data Out
3
Note 5
13
RD+
Received Data Out
3
Note 5
14
VEER
Receiver ground
1
15
VCCR
Receiver Power Supply
2
16
VCCT
Transmitter Power Supply
2
17
VEET
Transmitter Ground
1
18
TD+
Transmit Data In
3
Note 6
19
TD-
Inv. Transmit Data In
3
Note 6
20
VEET
Transmitter Ground
1
Note 4
Notes:
Plug Seq.: Pin engagement sequence during hot plugging.
1) TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage
between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; Logic 1 indicates a laser fault of some kind. In the low
state, the output will be pulled to less than 0.8V.
2) TX Disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a
4.7k~10kΩ resistor. Its states are:
Low (0 to 0.8V):
Transmitter on
(>0.8V, < 2.0V):
Undefined
High (2.0 to 3.465V):
Transmitter Disabled
Open:
Transmitter Disabled
3) Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7k~10kΩ resistor on the host board.
The pull-up voltage shall be VccT or VccR.
Mod-Def 0 is grounded by the module to indicate that the module is present
Mod-Def 1 is the clock line of two wire serial interface for serial ID
Mod-Def 2 is the data line of two wire serial interface for serial ID
4) LOS is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor. Pull up voltage between 2.0V and
Vcc+0.3V. Logic 1 indicates loss of signal; Logic 0 indicates normal operation. In the low state, the output will be pulled to
less than 0.8V.
5) RD-/+: These are the differential receiver outputs. They are internally AC-coupled 100 differential lines which should be
terminated with 100Ω (differential) at the user SERDES.
6) TD-/+: These are the differential transmitter inputs. They are internally AC-coupled, differential lines with 100Ω differential
termination inside the module.
Recommended Interface Circuit
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Mechanical Dimensions
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Regulatory Compliance
Gigalight SFP transceiver is designed to be Class I Laser safety compliant and is certified per the following
standards
Certificate /
Feature
Agency
Standard
Comments
Laser Safety
FDA
CDRH 21 CFR 1040 annd Laser Notice
No. 50
1120295-000
Product Safety
BST
EN 60825-1:2007
EN 60825-2:2004
EN 60950-1:2006
BT0905142001
Environmental protection
SGS
RoHS Directive 2002/95/EC
GZ0902007478/CHEM
EMC
CCIC
EN 55022:2006+A1:2007
EN 55024:1998+A1:2001+A2:2003
CTE09020023
Ordering information
Part Number
GPC-XX4G-08CD
Product Description
XX=27~61, 4.25Gbps, 80km,
0ºC ~ +70ºC, With Digital Diagnostic Monitoring
References
1.
2.
Small Form Factor Pluggable (SFP) Transceiver Multi-Source Agreement (MSA),September 2000.
Telcordia GR-253-CORE and ITU-T G.957 Specifications.
Important Notice
Performance figures, data and any illustrative material provided in this data sheet are typical and must be
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specifically confirmed in writing by GIGALIGHT before they become applicable to any particular order or
contract. In accordance with the GIGALIGHT policy of continuous improvement specifications may change
without notice.
The publication of information in this data sheet does not imply freedom from patent or other protective
rights of GIGALIGHT or others. Further details are available from any GIGALIGHT sales representative.
E-mail: sales@gigalight.com.cn
Web : http://www.gigalight.com.cn
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