Alpha Bridge AB-SFP+-03 Datasheet
Features
- Optical interface compliant to IEEE 3ae 10GBASE-SR
- Electrical interface compliant to SFF-8431
- Hot Pluggable
- 850nm VCSEL transmitter, PIN photo-detector
- Maximum link length of 300m on 2000MHz/km MMF
- Operating case temperature: 0 to 70℃
- Low power consumption
- All-metal housing for superior EMI performance
- Advanced firmware allows customer system encryption information to be stored in the transceiver
- Cost-effective SFP+ solution, enables higher port densities and greater bandwidth
Applications
- 10GBASE-SR at 3125Gbps
- 10GBASE-SW at 953Gbps
- Other optical links
Product Description
This 850nm VCSEL 10Gigabit SFP+ transceiver is designed to transmit and receive optical data over 50/125 μm or 62.5/125 μm multimode optical fiber.
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 150mmof 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. A logic “1,” or no connection on this pin will disable the laser from transmitting. A logic “0” on this pin provides normal operation. The transmitter has an internal automatic power control loop (APC) to ensure constant optical power output across supply voltage and temperature variations. An open collector compatible Transmit Fault (TFault) is provided. TX_Fault is a 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.
Absolute Maximum Ratings
| Parameters | Symbol | Min. | Max. | Unit |
| Power Supply Voltage | VCC | 0 | +3.6 | V |
| Storage Temperature | Tc | -40 | +85 | ̊C |
| Operating Case Temperature | Tc | 0/-40 | +70/+85 | ̊C |
| Relative Humidity | RH | 5 | 95 | % |
| RX Input Average Power | Pmax | - | 0 | dBm |
Recommended operating environment
| Parameter | Symbol | Min. | Typical | Max | Unit |
| Power Supply Voltage | VCC | 3.135 | 3.300 | 3.465 | V |
Optical characteristics
| Parameter | Symbol | Min. | Typical | Max | Unit | Notes |
| Transmitter | ||||||
| Center Wavelength | λt | 840 | 850 | 860 | nm | |
| RMS spectral width | Pm | - | - | Note 1 | nm | |
| Average Optical Power | Pavg | -6.5 | - | -1 | dBm | 2 |
| Extinction Ratio | ER | 3.5 | - | - | dB | 3 |
| 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 | Psens | - | - | -11.1 | dBm | 4 |
| Stressed Sensitivity in OMA | - | - | -7.5 | dBm | 4 | |
| Los function | Los | -30 | - | -12 | dBm | |
| Overload | Pin | - | - | -1.0 | dBm | 4 |
| Receiver Reflectance | - | - | -12 | dB | ||
Digital Diagnostic Functions
| Parameter | Symbol | Min. | Max | Unit | Notes |
| Temperature monitor absolute error | DMI_Temp | -3 | +3 | ̊C | Over operating temp |
| Laser power monitor absolute error | DMI_TX | -3 | +3 | dB | |
| RX power monitor absolute error | DMI_RX | -3 | +3 | dB | -3dBm 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 |
Electrical Characteristics
| 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 | - | 4.0 | V | ||
| C common mode voltage tolerance | 15 | - | - | mV | ||
| Tx Input Diff Voltage | VI | 180 | 1200 | mV | ||
| Tx Fault | VoL | -0.3 | 0.4 | V | At 0.7mA | |
| Data Dependent Input Jitter | DDJ | 0.10 | UI | |||
| Data Input Total Jitter | TJ | 0.28 | UI | |||
| Receiver | ||||||
| Single Ended Output Voltage Tolerance | -0.3 | - | 4.0 | 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 | 0.70 | UI | |||
| Deterministic Jitter | DJ | 0.42 | UI | |||
Control and status I/O timing characteristics
| Parameter | Symbol | min | max | unit | Conditions |
| TX Disable assert time | t_off | 100 | us | rising edge of TX_Disable to full of output signal below 10% of nominal | |
| TX Disable negate time | t_on | 2 | ms | The falling edge of Tx Disable to rise of output signal above 90% of nominal, This only applies to normal operation not during startup or full recovery | |
| "Time to initialize 2-wire Interface | t_2w_start_up | 300 | ms | From power on or hot-plug after the supply meeting Table 8. | |
| Time to initialize | t_start_up | 300 | ms | From-power supplies meeting Table 8 or hot plug or Tx disable negated during power up or Tx Fault recovery, until-non-cooled power level II part for non-cooled power power-level t for Tx Fault-recovery) is fully operational | |
| Time to initialize cooled-module | t_start_up_cooled | 90 | s | From power supplies meeting Table 8 or hot plug. or Tx disable negated during power up or by Fault recovery, until cooled power level part for cooled power level: part during fault operational recovery) is fully Operational | |
| Time to Power Up to level | 1power level2 | 300 | ms | From the falling edge of stop bit enabling power level II until the non-cooled module is fully operational | |
| Time to Power Down from Level II | t_power_down | 300 | ms | From the falling edge of stop bit disabling power-level II until the module is within power-level requirements | |
| TX_Fault assert | TX_Fault_on | 1 | ms | From the occurrence of fault-to assertion of Tx_Fault | |
| TX Fault assed for cooled module | TX Fault_on.comled | 50 | ms | From the occurrence of fault-to assertion of Tx_Fault | |
| TX Fault Reset | t_reset | 10 | us | Time Tx_Disable must be held high to reset Tx_Fault | |
| RSL, RSI rate select timing for FC | t_Rso_FC,RSI_FC | 500 | us | From assertion till stable output | |
| RSO, RSI rate select timing non-FC | T_Rso, t_RSI | 10 | ms | From assertion till stable output | |
| Rx_LOS assert delay | t_los_on | 100 | ms | From the occurrence of loss of signal to the assertion of Rx_LOS | |
| Rx_LOS negate delay | t_los_off | 100 | ms | From occurrence of the presence of signal to the negation of Rx_Los |
Ordering Information
| Part Number | Description |
| AB-SFP+-03 | 10Gbps 850nm 300m LC SFP+ Transceiver 0ºC ~ +70ºC |
| AB-SFP+-03-I | 10Gbps 850nm 300m LC SFP+ Transceiver -40ºC ~ +85ºC |
