Mul
ti-rate OC-12/STM-4 SFP CWDM Single Mode
Transceivers withDigital Diagnostics
TRPA12M CWDM
Product Description
The TRPA12M CWDM SFP series of multi-rate transceivers with integrated digital
diagnostics monitoring functionality provide a quick and reliable interface
for long reach (LR) applications. The diagnostic functions, alarm and warning
features as described in the Multi-Source Agreement (MSA) document, SFF-
8472 (Rev. 9.3), are provided via an I
2
C serial interface.
Products under this series are compatible with SONET/SDH standards for OC-
12/STM-4 LR-2/L-4.2 and are capable of operating down to 155Mb/s data rate.
There are eight (8) wavelengths available: 1471nm, 1491nm, 1511nm, 1531nm,
1551nm, 1571nm, 1591nm and 1611nm. Two optical link power budgets are
available, 27dB and 29dB, providing an extra 2dB and 4dB over SONET/SDH
link budgets, respectively, to accommodate the wavelength multiplexing
and de-multiplexing insertion losses. All modules satisfy Class I Laser Safety
requirements in accordance with the U.S. and international standards as
described in the FDA/CDRH and IEC-60825 documents, respectively.
The TRPA12M CWDM multi-rate transceivers connect to standard 20-pad SFP
connectors for hot plug capability. This allows the system designer to make
configuration changes or maintenance by simply plugging in different types
of transceivers without removing the power supply from the host system.
The transceivers have colored bail-type latches, which offer an easy and
convenient way to release the modules. The latch is compliant with the SFP
MSA.
The transmitter and receiver DATA interfaces are AC-coupled internally. LV-TTL
Transmitter Disable control input and loss of Signal output interfaces are also
provided.
The transceivers operate from a single +3.3V power supply over an operating
case temperature range of -5°C to +70°C (“B” option) or -5°C to +85°C (“E”
option). The housing is made of plastic and metal for EMI immunity.
Features
Eight (8) Wavelength CWDM Transceivers
Compatible with SFP MSA
Compatible with SONET/SDH OC-12/
STM-4 (622Mb/s) LR-2/L-4.2 Long Reach
Specifications
Compatible with SONET/SDH OC-3/STM-1
(155Mb/s)
Digital Diagnostics through Serial Interface
Internal Calibration for Digital Diagnostics
Optical Link Power Budgets of 27dB & 29dB
Minimum
Eye Safe (Class I Laser Safety)
Duplex LC Optical Interface
Excellent EMI & ESD Protection
Hot-pluggable
TX Fault & Loss of Signal Outputs
TX Disable Input
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Case Temperature
1
Supply Voltage
Input Voltage
1
Symbol
T
ST
“B” Option
“E” Option
T
OP
V
CC
V
IN
Minimum
- 40
-5
-5
0
0
Maximum
+ 85
+ 70
+ 85
+ 5.0
V
CC
Units
°C
°C
V
V
Measured on top side of SFP module at the front center vent hole of the cage.
An Oplink Company
RevB-NP. 2008.09.09
TRPA12M CWDM
Transmitter Performance Characteristics
All parameters guaranteed only at typical data rate
Parameter
Operating Data Rate
Average Optical Output
Power (coupled into single
mode fiber), 50% duty cycle
Extinction Ratio
1471
1491
1511
Center Wavelength
1531
1551
1571
1591
1611
Spectral Width (-20dB)
Side Mode Suppression Ratio
Optical Output Eye
Δλ
20
SMSR
λ
C
TRPA12L2HBxMx
TRPA12L2IBxMx
Symbol
B
P
O
P
hi
/P
lo
Minimum
125
- 2.0
0
10
1464.5
1484.5
1504.5
1524.5
1544.5
1564.5
1584.5
1604.5
-
30
Typical
-
-
-
-
1471
1491
1511
1531
1551
1571
1591
1611
-
-
Maximum
2.67
+ 3.0
+ 5.0
-
1477.5
1497.5
1517.5
1537.5
1557.5
1577.5
1597.5
1617.5
1.0
-
nm
dB
nm
Units
Mb/s
dBm
dB
(Over Operating Case Temperature. V
CC
= 3.13 to 3.47V)
Compliant with Telcordia GR-253-CORE and ITU-T Recommendation G.957
Receiver Performance Characteristics
All parameters guaranteed only at typical data rate
Parameter
Operating Data Rate
Receiver Sensitivity (10
-10
BER)
1
Maximum Input Optical Power (10
-12
BER)
1
LOS Thresholds
LOS Timing Delay
LOS Hysteresis
Wavelength of Operation
Receiver Reflectance
1
(Over Operating Case Temperature. V
CC
= 3.13 to 3.47V)
Symbol
B
P
min
P
max
P
los+
P
los-
t_loss_off
t_loss_on
-
λ
-
Minimum
125
- 29.0
- 7.0
-
- 45.0
-
2.3
0.5
1260
-
Typical
-
- 31.0
- 3.0
-
-
-
-
1.5
-
-
Maximum
622
-
-
- 29.0
-
100
100
-
1620
- 27.0
Units
Mb/s
dBm
dBm
dBm
μs
dB
nm
dB
Increasing Light Input
Decreasing Light Input
Increasing Light Input
Decreasing Light Input
When measured at 125Mb/s & 200Mb/s with 2
7
-1 PRBS, and at 155Mb/s & 622Mb/s with 2
23
-1 PRBS.
Laser Safety
Laser Safety:
All transceivers are Class I Laser products per
FDA/CDRH and IEC-60825 standards. They must be operated
under specified operating conditions.
Oplink Communications, Inc.
DATE OF MANUFACTURE:
This product complies with
21 CFR 1040.10 and 1040.11
Meets Class I Laser Safety Requirements
Oplink Communications, Inc.
2
RevB-NP. 2008.09.09
TRPA12M CWDM
Transmitter Performance Characteristics
Parameter
Input Voltage Swing (TD+ & TD-)
1
Input HIGH Voltage (TX Disable)
2
Input LOW Voltage (TX Disable)
2
Output HIGH Voltage (TX Fault)
3
Output LOW Voltage (TX Fault)
3
1
2
3
(Over Operating Case Temperature. V
CC
= 3.13 to 3.47V)
Minimum
0.25
2.0
0
2.0
0
Typical
-
-
-
-
-
Maximum
2.4
V
CC
0.8
V
CC
+ 0.3
0.8
Units
V
V
V
V
V
Symbol
V
PP-DIF
V
IH
V
IL
V
OH
V
OL
Differential peak-to-peak voltage.
There is an internal 4.7 to 10kΩ pull-up resistor to VccT.
Open collector compatible, 4.7 to 10kΩ pull-up resistor to Vcc (Host Supply Voltage).
Receiver Electrical Interface
Parameter
Output Voltage Swing (RD+ & RD-)
1
Output HIGH Voltage (LOS)
2
Output LOW Voltage (LOS))
2
1
2
(Over Operating Case Temperature. V
CC
= 3.13 to 3.47V))
Symbol
V
PP-DIF
V
OH
V
OL
Minimum
0.6
2.0
0
Typical
-
-
-
Maximum
2.0
V
CC
+ 0.3
0.5
Units
V
V
V
Differential peak-to-peak voltage across external 100Ω load.
Open collector compatible, 4.7 to 10kΩ pull-up resistor to Vcc (Host Supply Voltage).
Electrical Power Supply Characteristics
Parameter
Supply Voltage
Supply Current
V
CC
I
CC
(Over Operating Case Temperature. V
CC
= 3.13 to 3.47V))
Minimum
3.13
-
Typical
3.3
210
Maximum
3.47
275
Units
V
mA
Symbol
Module Definition
MOD_DEF(0)
pin 6
MOD_DEF(1)
pin 5
MOD_DEF(2)
pin 4
Interpretation by Host
TTL LOW
SCL
SDA
Serial module definition protocol
Electrical Pad Layout
20
19
18
17
16
15
14
13
12
11
TX GND
TD- (TX DATA IN-)
TD+ (TX DATA IN+)
TX GND
VccTX
VccRX
RX GND
RD+ (RX DATA OUT+)
RD- (RX DATA OUT-)
RX GND
Host Board Connector Pad Layout
20
19
18
17
16
15
14
13
12
11
Toward
ASIC
1
2
3
4
5
6
7
8
9
10
TX GND
TX Fault
TX Disable
MOD_DEF(2)
MOD_DEF(1)
MOD_DEF(0)
NO CONNECTION
LOS
RX GND
RX GND
1
2
3
Toward
Bezel
4
5
6
7
8
9
10
Top of Board
Bottom of Board
(as viewed thru top of board)
Oplink Communications, Inc.
3
RevB-NP. 2008.09.09
TRPA12M CWDM
Example of SFP host board schematic
1μH coil or ferrite bead
(<0.2Ω series resistance)
Vcc
3.3V
Vcc
3.3V
+
10
0.1
0.1
16
15
R R
2
8
4
5
6
R
R
TX Fault
LOS
MOD_DEF(2)
MOD_DEF(1)
MOD_DEF(0)
(100Ω to Ground Internally)
RX DATA OUT+
to 50Ω load
RX DATA OUT-
to 50Ω load
+
10
0.1
TX Disable
TX DATA IN+
TX DATA IN-
3
18
19
TRPA12M
CWDM
100
13
12
1, 9, 10, 11, 14, 17, 20
R: 4.7 to 10kΩ
Application Notes
Electrical interface:
All signal interfaces are compliant with
the SFP MSA specification. The high speed DATA interface
is differential AC-coupled internally with 0.1μF and can be
directly connected to a 3.3V SERDES IC. All low speed control
and sense output signals are open collector TTLcompatible
and should be pulled up with a 4.7 - 10kΩ resistor on the
host board
Upon power up, MOD_DEF(1:2) appear as NC (no connection),
and MOD_DEF(0) is TTL LOW. When the host system detects
this condition, it activates the serial protocol (standard
two-wire I
2
C serial interface) and generates the serial clock
signal (SCL). The positive edge clocks data into the EEPROM
segments of the SFP that are not write protected, and the
negative edge clocks data from the SFP.
The serial data signal (SDA) is for serial data transfer. The
host uses SDA in conjunction with SCL to mark the start and
end of serial protocol activation. The supported monitoring
functions are internal temperature, supply voltage, bias
current, transmitter power, average receiver signal, all alarms
and warnings and software monitoring of TX Fault/LOS. The
device is internally calibrated.
The data transfer protocol and the details of the mandatory
and vendor specific data structures are defined in the SFPMSA,
and SFF-8472, Rev. 9.4
Power Supply and Grounding:
The power supply line
should be well-filtered. All 0.1μF power supply bypass
capacitors should be as close to the transceiver module
as possible.
Loss of Signal (LOS):
The Loss of Signal circuit monitors the
level of the incoming optical signal and generates a logic HIGH
when an insufficient photocurrent is produced.
TX_Fault:
The output indicates LOW when the transmitter
is operating normally, and HIGH with a laser fault including
laser end-of-life. TX Fault is an open collector/drain output
that should be pulled up with a 4.7 - 10kΩ resistor on the
host board. TX Fault is non-latching (automatically deasserts
when fault goes away).
TX_Disable:
When the TX Disable pin is at logic HIGH, the
transmitter optical output is disabled (less than -35dBm).
Serial Identification and Monitoring:
The module
definition of SFP is indicated by the three module definition
pins, MOD_DEF(0), MOD_DEF(1) and MOD_DEF(2).
Oplink Communications, Inc.
4
RevB-NP. 2008.09.09
TRPA12M CWDM
Mechanical Package
46335 Landing Pkwy Fremont, CA 94538 Tel: (510) 933-7200 Fax: (510) 933-7300 Email: Sales@Oplink.com • www.oplink.com
Dimensions in inches [mm]
Default tolerances:
.xxx = + .005”, .xx = + .01”
Ordering Information
Oplink can provide a remarkable range of customized optical solutions. For detail, please contact Oplink’s Sales
and Marketing for your requirements and ordering information (510) 933-7200 or Sales@oplink.com.
Oplink Communications, Inc. reserves the right to make changes in equipment design or specifications without notice. Information supplied by Oplink Commu-
nications, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Oplink Communications, Inc. for its use nor for any infringements
of third parties, which may result from its use. No license is granted by implication or otherwise under any patent right of Oplink Communications, Inc.
RevB-NP. 2008.09.09
© 2006, Oplink Communications, Inc.
5
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