G-OM-MMSFLC+
Optical Module Multi Mode SIngle Fiber LC SFP+ 10Gbps
Optical Module Multi Mode Single Fiber LC SFP+ 10Gbps 500m
Features
· 10Gb/s serial optical interface compliant to 802.3ae 10GBASE-SR
· Electrical interface compliant to SFF-8431 specifications for enhanced 8.5 and 10 Gigabit small form factor pluggable module “SFP+”
· 850nm VCSEL transmitter, PIN photo-detector, Chip On Board
· 2-wire interface for management specifications compliant with SFF 8472 digital diagnostic monitoring interface for optical transceivers
· Operating case temperature: 0 to 70°C
· All-metal housing for superior EMI performance
· Low power consumption
· Advanced firmware allow customer system encryption information to be stored in transceiver
· Cost effective SFP+ solution, enables higher port densities and greater bandwidth
· RoHS compliant
Applications
· High-speed storage area networks
· Computer cluster cross-connect
· Custom high-speed data pipes
· Inter Rack Connection
Figure1: Application in System
1. GENERAL DESCRIPTION
This 850 nm VCSEL 10Gigabit SFP+ transceiver is designed to transmit and receive optical data over 50/125 μm or 62.5/125 μm multimode optical fiber (Table 1).
|
Fiber type |
850nm OFL Bandwidth |
Supported Distances (meters) |
|
62.5μm MMF |
160MHz-km |
2 to 26 |
|
OM1 200 MHz-km |
2 to 33 | |
|
50μm MMF |
400 MHz-km |
2 to 66 |
|
OM2 500 MHz-km |
2 to 82 | |
|
OM3 2000 MHz-km |
2 to 300 |
Table 1: SFP+ SR Operating Range for each Optical Fiber Type
The SFP+ SR module electrical interface is compliant to SFI electrical specifications. The transmitter input and receiver output impedance is 100 Ohms differential. Data lines are internally AC coupled. The module provides differential termination and reduce differential to common mode conversion for quality signal termination and low EMI. SFI typically operates over 200 mm of improved FR4 material or up to about 150mm of standard FR4 with one connector.
The transmitter converts 10Gbit/s serial PECL or CML electrical data into serial optical data compliant with the 10GBASE-SR standard. An open collector compatible Transmit Disable (Tx_Dis) is provided. Logic “1” or no connection on this pin will disable the laser from transmitting. Logic “0” on this pin provides normal operation. An open collector compatible Transmit Fault (Tx_Fault) is provided. TX_Fault is module output contact that when high, indicates that the module transmitter has detected a fault condition related to laser operation or safety. The TX_Fault output contact is an open drain/collector and shall be pulled up to the Vcc_Host in the host with a resistor in the range 4.7-10 kΩ. TX_Disable is a module input contact. When TX_Disable is asserted high or left open, the SFP+ module transmitter output shall be turned off. This contact shall be pulled up to VccT with a 4.7 kΩ to 10 kΩ resistor
The receiver converts 10Gbit/s serial optical data into serial PECL/CML electrical data. An open collector compatible Loss of Signal is provided. Rx_LOS when high indicates an optical signal level below that specified in the relevant standard. The Rx_LOS contact is an open drain/collector output and shall be pulled up to Vcc_Host in the host with a resistor in the range 4.7-10 kΩ, or with an active termination. Power supply filtering is recommended for both the transmitter and receiver. The Rx_LOS signal is intended as a preliminary indication to the system in which the SFP+ is installed that the received signal strength is below the specified range. Such an indication typically points to non-installed cables, broken cables, or a disabled, failing or a powered off transmitter at the far end of the cable.
2. TRANSCEIVER BLOCK DIAGRAM
3. PROPOSED APPLICATION SCHEMATICS
 |
4. PIN DEFINITION
The SFP+ modules are hot-pluggable. Hot pluggable refers to plugging in or unplugging a module while the host board is powered. The SFP+ host connector is a 0.8 mm pitch 20 position right angle improved connector specified by SFF-8083, or stacked connector with equivalent with equivalent electrical performance. Host PCB contact assignment is shown in Figure 4 and contact definitions are given in the PIN description table. SFP+ module contacts mates with the host in the order of ground, power, followed by signal as illustrated by Figure 5 and the contact sequence order listed in the PIN description table.
Figure 4: Module Interface to Host
Figure 5: Module Contact Assignment
Pin description
PIN | Logic | Symbol | Name / Description | Note |
1 |
| VeeT | Module Transmitter Ground | 1 |
2 | LVTTL-O | TX_Fault | Module Transmitter Fault |
|
3 | LVTTL-I | TX_Dis | Transmitter Disable; Turns off transmitter laser output |
|
4 | LVTTL-I/O | SDA | 2-Wire Serial Interface Data Line | 2 |
5 | LVTTL-I | SCL | 2-Wire Serial Interface Clock | 2 |
6 |
| MOD_DEF0 | Module Definition, Grounded in the module |
|
7 | LVTTL-I | RS0 | Receiver Rate Select |
|
8 | LVTTL-O | RX_LOS | Receiver Loss of Signal Indication Active LOW |
|
9 | LVTTL-I | RS1 | Transmitter Rate Select (not used) |
|
10 |
| VeeR | Module Receiver Ground | 1 |
11 |
| VeeR | Module Receiver Ground | 1 |
12 | CML-O | RD- | Receiver Inverted Data Output |
|
13 | CML-O | RD+ | Receiver Data Output |
|
14 |
| VeeR | Module Receiver Ground | 1 |
15 |
| VccR | Module Receiver 3.3 V Supply |
|
16 |
| VccT | Module Receiver 3.3 V Supply |
|
17 |
| VeeT | Module Transmitter Ground | 1 |
18 | CML-I | TD+ | Transmitter Non-Inverted Data Input |
|
19 | CML-I | TD- | Transmitter Inverted Data Input |
|
20 |
| VeeT | Module Transmitter Ground | 1 |
Note:
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 3.45V on the host board.
5. ABSOLUTE MAXIMUM RATING
These values represent the damage threshold of the module. Stress in excess of any of the individual Absolute Maximum Ratings can cause immediate catastrophic damage to the module even if all other parameters are within Recommended Operating Conditions.
Parameters | Symbol | Min. | Max. | Unit |
Power Supply Voltage | VCC | 0 | 3.6 | V |
Storage Temperature | Tc | -40 | 85 | °C |
Operating Case Temperature | Tc | 0 | 70 | °C |
Relative Humidity | RH | 5 | 95 | % |
RX Input Average Power | Pmax | - | 1.5 | dBm |
6. RECOMMENDED OPERATING ENVIRONMENT
Recommended Operating Environment specifies parameters for which the electrical and optical characteristics hold unless otherwise noted.
Parameters | Symbol | Min. | Typical | Max | Unit |
Power Supply Voltage | VCC | 3.135 | 3.3 | 3.465 | V |
Power Supply Current | Icc |
|
| 250 | mA |
Operating Case Temperature | TC | 0 | 25 | 70 | °C |
7. 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 | λt | 840 | 850 | 860 | nm |
|
RMS spectral width | Pm | - | - | 0.45 | nm | 1 |
Average Optical Power | Pavg | -5 | - | -1 | dBm |
|
Optical Power OMA | Poma | - | -1.5 |
| dBm | 1 |
Laser Off Power | Poff | - | - | -30 | dBm |
|
Extinction Ratio | ER | 3.5 | - | - | dB |
|
Transmitter Dispersion Penalty | TDP | - | - | 3.9 | dB |
|
Relative Intensity Noise | Rin | - | - | -128 | dB/Hz | 12dB reflection |
Optical Return Loss Tolerance |
| - | - | 12 | dB |
|
Receiver | ||||||
Center Wavelength | λr | 840 | 850 | 860 | nm |
|
Receiver Sensitivity (OMA) | Psens | - | - | -11.1 | dBm |
|
Stressed Sensitivity (OMA) |
| - | - | -7.5 | dBm |
|
LOS Assert | LOSA | -30 | - | - | dBm |
|
LOS Deassert | LOSD | - | - | -12 | dBm |
|
LOS Hysteresis | LOSH | 0.5 | - | - | dB |
|
Overload | Pin | - | - | -1 | dBm |
|
Receiver Reflectance |
| - | - | -12 | dB |
|
Note1: Per Tradeoff Table 52.8, IEEE 802.3ae 2005
8. DITITAL DIAGNOSTIC FUNCTIONS
The following digital diagnostic characteristics are defined over the Recommended Operating Environment unless otherwise specified. It is compliant to SFF8472 Rev11 with internal calibration mode. For external calibration mode please contact our sales
Parameter | Symbol | Min. | Max | Unit | Notes |
Temperature monitor absolute error | DMI_Temp | -3 | 3 | degC | Over operating temp |
Laser power monitor absolute error | DMI_TX | -3 | 3 | dB |
|
RX power monitor absolute error | DMI_RX | -3 | 3 | dB | -1dBm to -12dBm range |
Supply voltage monitor absolute error | DMI_VCC | -0.08 | 0.08 | V | Full operating range |
Bias current monitor | DMI_Ibias | -10% | 10% | mA |
|
9. ELECTRICAL CHARACTERISTICS
The following electrical characteristics are defined over the Recommended Operating Environment unless otherwise specified.
Parameter | Symbol | Min. | Typical | Max | Unit | Notes |
Data Rate |
| - | 10.3125 | - | Gbps |
|
Power Consumption |
| - | 600 | 800 | mW |
|
Transmitter | ||||||
Single Ended Output Voltage Tolerance |
| -0.3 | - | 4 | V |
|
C common mode voltage tolerance |
| 15 | - | - | mV |
|
Tx Input Diff Voltage | VI | 180 |
| 700 | mV |
|
Tx Fault | VoL | -0.3 |
| 0.4 | V | At 0.7mA |
Data Dependent Input Jitter | DDJ |
|
| 0.1 | UI |
|
Data Input Total Jitter | TJ |
|
| 0.28 | UI |
|
Receiver | ||||||
Single Ended Output Voltage Tolerance |
| -0.3 | - | 4 | V |
|
Rx Output Diff Voltage | Vo | 300 |
| 850 | mV |
|
Rx Output Rise and Fall Time | Tr/Tf | 30 |
|
| ps | 20% to 80% |
Total Jitter | TJ |
|
| 0.7 | UI |
|
Deterministic Jitter | DJ |
|
| 0.42 | UI |
|
10. CONTROL AND STATUS I/O TIMING CHARACTERISTICS
Timing characteristics of control and status I/O are included in Table 8, which is also defined in SFF-8431.
Symbol | Min | Max | Unit | Condition | |
TX_Disable assert time | t_off |
| 10 | Us | Timing from rising edge of TX_Disable to when the optical output falls below 10% of nominal |
TX_Disable negate time | t_on |
| 1 | ms | Timing from falling edge of TX_Disable to when the modulated optical output rises above 90% of nominal |
Time to initialize Including reset of TX_Fault | t_init |
| 300 | ms | From power on or negation of TX Fault using TX Disable |
TX_fault assert time | TX_fault |
| 100 | us | From occurrence of fault to assertion of TX_fault |
TX Disable to reset | t_reset | 10 |
| us | Time TX_Disable must be held high to reset TX_fault |
Los assert time | t_loss_on |
| 100 | us | Time from LOS state to Rx_Los assert |
Los Deassert Time | t_loss_off |
| 100 | us | Time from non_ LOS state to Rx_Los deassert |
Rate-Select Change Time | t_ratesel |
| 10 | us | Time from rising or falling edge of Rate Select input until receiver bandwidth is in conformance with appropriate specification |
Serial ID Clock Rate | f_serial_clock |
| 100 | kHz |
|
11. MECHANICAL
Comply with SFF-8432 rev. 5.0, the improved Pluggable form factor specification.
12. ESD
This transceiver is specified as ESD threshold 1kV for SFI pins and 2kv for all others electrical input pins, tested per MIL-STD-883, Method 3015.4 /JESD22-A114-A (HBM). However, normal ESD precautions are still required during the handling of this module. This transceiver is shipped in ESD protective packaging. It should be removed from the packaging and handled only in an ESD protected environment.
13. LASER SAFTY
This is a Class 1 Laser Product according to IEC 60825-1:2007. This product complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated (June 24, 2007)