OC-12/STM-4 SFP Multimode
Transceivers with Digital Diagnostics
TRPA12MM
Product Description
The TRPA12MM SFP fiber optic transceivers with integrated digital diag-
nostics monitoring functionality provide a quick and reliable interface for
OC-12/STM-4 multimode applications. The diagnostic monitoring func-
tions, alarm and warning features are provided via an I
2
C serial interface.
The transceivers are designed to be compatible with the ATM require-
ments at OC-12/STM-4 (622Mb/s) data rate.
The TRPA12MM transceivers connect to standard 20-pad SFP connectors
for hot plug capability. This allows the system designer to make configu-
ration changes or maintenance by simply plugging in different types of
transceivers without removing the power supply from the host system.
The transmitter design incorporates a highly reliable 1310nm LED and an
integrated driver circuit. The receiver features a transimpedance amplifier
IC for high sensitivity and wide dynamic range. The transmitter and re-
ceiver DATA interfaces are AC-coupled internally. LV-TTL Transmitter Dis-
able control input and Loss of Signal output interfaces are also provided.
The transceivers operate from a single +3.3V power supply over three
operating case temperature ranges of -5°C to +70°C (“B” option), -5°C to
+85°C (“E” option), or -40°C to +85°C (“A” option). The housing is made of
plastic and metal for EMI enhancement.
Features
Compatible with SFP MSA
Compatible with ATM and Specifications for
OC-12/STM-4 (622Mb/s)
Digital Diagnostics Monitoring through
Serial Interface
Distances up to 500m
Hot-pluggable
Three Operating Case Temperature Options
Loss of Signal Output
TX Disable Input
Duplex LC Optical Interface
Single +3.3V Power Supply
Absolute Maximum Ratings
Parameter
Storage Temperature
“B” option
Operating Case Temperature
1
Supply Voltage
Input Voltage
1
Symbol
T
st
“E” option
“A” option
V
cc
V
in
T
op
Minimum
- 40
-5
-5
- 40
0
0
Maximum
+ 85
+ 70
+ 85
+ 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-P. 2009.04.01
TRPA12MM
Transmitter Performance Characteristics
(Over Operating Case Temperature,
V
CC
= 3.13 to 3.47V)
All parameters guaranteed only at typical data rate
Parameter
Operating Data Rate
1
Optical Output Power
2
Center Wavelength
Spectral Width (FWHM)
Optical Rise and Fall Time (10% to 90%)
Extinction Ratio
Transmitter OFF Power
Systematic Jitter (DCD & DDJ, peak-to-peak)
Random Jitter (peak-to-peak)
1
2
Symbol
B
P
O
λ
C
Δλ
FWHM
t
r,
t
f
P
hi
/P
lo
P
OFF
SJ
RJ
Minimum
-
- 20.0
1270
-
-
10
-
-
-
Typical
622
-
-
140
1.0
-
-
-
-
Maximum
-
- 14.0
1380
200
1.25
-
- 45.0
0.4
0.15
Units
Mb/s
dBm
nm
nm
ns
dB
dBm
ns
ns
Data rate ranges from 50Mb/s to 700Mb/s. However, some degradation may be incurred in overall performance.
Measured average power coupled into 62.5/125μm, 0.275 NA graded-index multimode fiber.
The minimum power specified is at Beginning-of-Life.
Receiver Performance Characteristics
(Over Operating Case Temperature,
V
CC
= 3.13 to 3.47V)
All parameters guaranteed only at typical data rate
Parameter
Operating Data Rate
1
Receiver Sensitivity (10
-10
BER)
2
Maximum Input Optical Power (10
-10
BER)
2
LOS Thresholds
LOS Hysteresis
LOS Timing Delay
Increasing Light Input
Decreasing Light Input
Increasing Light Input
Decreasing Light Input
Symbol
B
P
min
P
max
P
los+
P
los-
-
t_loss_off
t_loss_on
λ
Minimum
-
- 26.0
- 14.0
-
- 40.0
-
-
-
1100
Typical
622
- 28.0
- 6.0
-
-
1.0
-
-
-
Maximum
-
-
-
- 26.0
-
-
100
350
1600
Units
Mb/s
dBm
dBm
dBm
dB
µs
nm
Wavelength of Operation
1
2
Data rate ranges from 50Mb/s to 700Mb/s. However, some degradation may be incurred in overall performance.
Specified in average optical input power and measured at 622Mb/s and 1310nm wavelength with 2
23
-1 PRBS. The sensitivity is guaranteed with eye
opening of 0.31ns.
Laser Safety:
All transceivers are Class I Laser products per
FDA/CDRH and IEC-60825 standards. They must be oper-
ated 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-P. 2009.04.01
TRPA12MM
Transmitter Electrical Interface
(Over Operating Case Temperature,
V
CC
= 3.13 to 3.47V)
Parameter
Input Voltage Swing (TD+ & TD-)
1
Input HIGH Voltage (TX Disable)
2
Input LOW Voltage (TX Disable)
2
1
2
Symbol
V
PP-DIF
V
IH
V
IL
Minimum
0.25
2.0
0
Typical
-
-
-
Maximum
2.4
V
CC
0.8
Units
V
V
V
Differential peak-to-peak voltage.
There is an internal 4.7 to 10kΩ pull-up resistor to
VccT.
Receiver Electrical Interface
(Over Operating Case Temperature,
V
CC
= 3.13 to 3.47V)
Parameter
Output Voltage Swing (RD+ & RD-)
1
Output HIGH Voltage (LOS)
2
Output LOW Voltage (LOS)
2
1
2
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
(Over Operating Case Temperature,
V
CC
= 3.13 to 3.47V)
Parameter
Supply Voltage
Supply Current
Symbol
V
CC
I
CC
Minimum
3.13
-
Typical
3.3
210
Maximum
3.47
285
Units
V
mA
Module Definition
MOD_DEF(0)
pin 6
TTL LOW
MOD_DEF(1)
pin 5
SCL
MOD_DEF(2)
pin 4
SDA
Interpretation by Host
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
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
20
19
18
17
16
15
14
13
12
11
Toward
ASIC
4
5
6
7
8
9
10
Top of Board
Bottom of Board
(as viewed thru top of board)
Pin 2 Internally Grounded.
Oplink Communications, Inc.
3
RevB-. 2009.04.01
TRPA12MM
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
8
4
5
6
R
R
R
LOS
MOD_DEF(2)
MOD_DEF(1)
MOD_DEF(0)
(100 to ground internally)
RX DATA OUT+
to 50Ω load
RX DATA OUT-
to 50Ω load
+
10
0.1
TRPA12MM
3
18
TX Disable
50Ω line
TX DATA IN+
TX DATA IN-
50Ω line
50Ω line
13
50Ω line
19
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 TTL compatible
and should be pulled up with a 4.7 - 10kΩ resistor on the host
board.
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:
Per SFP MSA, pin 2 is TX Fault. This transceiver is
LED based and does not support TX Fault. Pin 2 is internally
connected to transmitter circuit ground (TX GND) to indicate
normal operation.
TX Disable:
When the TX Disable pin is at logic HIGH, the
transmitter optical output is disabled (less than -45dBm).
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). 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 RPM (receiver power monitor), internal temperature and
module supply voltage. The device is internally calibrated.
The data transfer protocol and the details of the mandatory
and vendor specific data structures are defined in the SFP MSA,
and SFF-8472, Rev. 9.3.
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.
Oplink Communications, Inc.
4
RevB-P. 2009.04.01
TRPA12MM
Package Outline
56.7
2.23 REF
0
1.27 -0.13
.050 +.000
-.005
0
0.98 -0.13
+.000
.038 -.005
1
.04
13.67
13.54
.54
.53
6.25±0.05
.246±.002
FRONT EDGE OF
TRANSCEIVER CAGE
47.3
1.861
8.51
.335
8.9
.350
46335 Landing Pkwy Fremont, CA 94538 Tel: (510) 933-7200 Fax: (510) 933-7300 Email: Sales@Oplink.com • www.oplink.com
13.9±0.2
.546±.008
1.8
.07
41.8±0.15
1.646±.006
45±0.20
1.771±.008
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.
Model Name
Operation Temperature
Latch Color
Nominal Wavelength
TRPA12MM3BAS
TRPA12MM3EAS
TRPA12MM3AAS
- 5°C to +70°C
- 5°C to +85°C
- 40°C to +85°C
Gray
Gray
Gray
1310nm
1310nm
1310nm
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-P. 2009.04.01
© 2008, Oplink Communications, Inc.
5
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