Features
Up to 25.78Gb/s data links
1310nm DFB laser and PIN+SOA receiver
Up to 80km on 9/125um SMF
Hot-pluggable SFP footprint
Support Digital Monitoring interface
Class 1 laser safety certified
Cost effective SFP28 solution, enables higher port densities and greater bandwidth
RoHS-10 compliant and lead-free
Single +3.3V power supply
2-wire interface for management specifications compliant with SFF-8472 digital diagnostic monitoring interface for optical transceivers
All-metal housing for superior EMI performance
Case operating temperature
Commercial: 0 ~ +70oC Extended: -10 ~ +80oC Industrial: -40 ~ +85oC
Applications
High-speed storage area networks
25GBASE 80KM
Other Optical Links
Absolute Maximum Ratings
It has to be noted that the operation in excess of any individual absolute maximum ratings might cause permanent damage to this module.
Parameter | Symbol | Min | Max | Unit | Notes |
Storage Temperature | TS | -40 | 85 | oC | |
Power Supply Voltage | VCC | -0.5 | 3.6 | V | |
Relative Humidity (non-condensation) | RH | 5 | 95 | % | |
Damage Threshold | THd | 3 | dBm |
Recommended Operating Conditions and Power Supply Requirements
Parameter | Symbol | Min | Typical | Max | Unit | Notes |
Operating Case Temperature |
TOP | 0 | 70 | oC | commercial | |
-40 | 85 | oC | Industrial | |||
Power Supply Voltage | VCC | 3.135 | 3.3 | 3.465 | V | |
Data Rate | 25.78 | Gb/s | ||||
Control Input Voltage High | 2 | Vcc | V | |||
Control Input Voltage Low | 0 | 0.8 | V | |||
Link Distance (SMF) | D | 80 | km | 9/125um |
Pin Assignment and Pin Description
Figure1. Diagram of host board connector block pin numbers and names
PIN | Name | Name/Description | Notes |
1 | VeeT | Transmitter Ground | 1 |
2 | TX_Fault | Transmitter Fault | |
3 | TX_Disable | Transmitter Disable; Turns off transmitter laser output | |
4 | SDA | Two wire serial interface Data Line (LVCMOS-I/O) (MOD-DEF2) | 2 |
5 | SCL | Two wire serial interface Clock Line (LVCMOS-I/O) (MOD-DEF1) | 2 |
6 | MOD_ABS | Module Definition, Grounded in the module | |
7 | RS0 | Rate Select 0 – Not used | |
8 | RX_LOS | Receiver Loss of Signal Indication Active LOW | |
9 | RS1 | Rate Select 1 – Not used | |
10 | VeeR | Receiver Ground | 1 |
11 | VeeR | Receiver Ground | 1 |
12 | RD- | Receiver Inverted Data Output | |
13 | RD+ | Receiver Data Output | |
14 | VeeR | Receiver Ground | 1 |
15 | VccR | Receiver Power - +3.3V | |
16 | VccT | Transmitter Power - +3.3 V | |
17 | VeeT | Transmitter Ground | 1 |
18 | TD+ | Transmitter Non-Inverted Data Input | |
19 | TD- | Transmitter Inverted Data Input | |
20 | VeeT | Transmitter Ground | 1 |
Notes:
1. Module ground pins GND are isolated from the module case.
2. Shall be pulled up with 4.7K-10Kohms to a voltage between 3.15V and 3.47V on the host board.
Electrical Characteristics
The following electrical characteristics are defined over the Recommended Operating Environment unless otherwise specified.
Parameter | Symbol | Min. | Typ. | Max | Unit | Notes |
Power Consumption | p | 3 | W | |||
Supply Current | Icc | 865 | mA | |||
Transmitter | ||||||
Single-ended Input Voltage Tolerance | Vcc | -0.3 | 4.0 | V | ||
Common mode voltage tolerance | 15 | mV | ||||
Differential Input Voltage Swing | Vin,pp | 180 | 700 | mVpp | ||
Differential Input Impedance | Zin | 90 | 100 | 110 | Ohm | 1 |
Transmit Disable Assert Time | 100 | us | ||||
Transmit Disable Voltage | Vdis | Vcc-1.3 | Vcc | V | ||
Transmit Enable Voltage | Ven | Vee | Vee +0.8 | V | 2 | |
Receiver | ||||||
Single-ended Input Voltage Tolerance | Vcc | -0.3 | 4.0 | V | ||
Differential Output Voltage Swing | Vout,pp | 300 | 900 | mVpp | ||
Differential Output Impedance | Zout | 90 | 100 | 110 | Ohm | 3 |
Data output rise/fall time | Tr/Tf | 12 | ps | 4 | ||
LOS Assert Voltage | VlosH | Vcc-1.3 | Vcc | V | 5 | |
LOS De-assert Voltage | VlosL | Vee | Vee +0.8 | V | 5 | |
Notes:
1. Connected directly to TX data input pins. AC coupled thereafter.
2. Or open circuit.
3. Input 100 ohms differential termination.
4. These are unfiltered 20-80% values.
5. Loss of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
Optical Characteristics
The following optical characteristics are defined over the Recommended Operating Environment unless otherwise specified.
Parameter | Symbol | Min. | Typical | Max | Unit | Notes |
Transmitter | ||||||
Center Wavelength | λC | 1295 | 1310 | 1325 | nm | |
Optical Spectral Width | ∆λ | 1 | nm | |||
Average Optical Power | PAVG | 1 | 6 | dBm | 1 | |
Side Mode Suppression Ratio | SMSR | 30 | dB | |||
Optical Extinction Ratio | ER | 6 | dB | |||
Transmitter OFF Output Power |
Poff |
-30 |
dBm | |||
Optical Return Loss Tolerance | ORLT | 20 | dB | |||
Transmitter reflectance | Tref | -26 | dB | |||
Transmitter Eye Mask | Compliant with IEEE802.3ae | |||||
Receiver | ||||||
Center Wavelength | λC | 1295 | 1310 | 1325 | nm | |
Average Receive Power | -30 | -7 | dBm | |||
Receiver Sensitivity (Average, each lane) | Sen1 | -23 | dBm | 2 | ||
Sen2 | -29 | dBm | 3 | |||
Input Saturation Power (overload) |
Psat |
-7 |
dBm | |||
LOS Assert | LOSA | -40 | dBm | |||
LOS De-assert | LOSD | -29 | dBm | |||
Damage Threshold | THd | -3 | dBm | |||
LOS Hysteresis | LOSH | 0.5 | dB | |||
Notes:
1. λc refer to wavelength selection, and corresponds to approximately 0.8 nm.
2. Class 1 Laser Safety per FDA/CDRH and IEC-825-1 regulations.
3. Measured with Light source 1528.77~1563.86nm, ER=4dB; BER =<10^-12 @ PRBS=2^31-1 NRZ.
Digital Diagnostic Functions
The following digital diagnostic characteristics are defined over the Recommended Operating Environment unless otherwise specified. It is compliant to SFF-8472 Rev10.2 with internal calibration mode. For external calibration mode please contact our sales staff.
Parameter | Symbol | Min. | Max | Unit | Notes |
Temperature monitor absolute error | DMI_ Temp | -3 | 3 | oC | 0~85C |
Supply voltage monitor absolute error | DMI _VCC | -3 | 3 | % | 0~Vcc |
RX power monitor absolute error | DMI_RX | -3 | 3 | dB | -7~-30dBm |
Bias current monitor error | DMI_ bias | -10 | 10 | % | 0~100mA |
TX power monitor absolute error | DMI_TX | -3 | 3 | dB | 1~6dBm |
Mechanical Dimensions
Figure2. Mechanical Outline
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