
100BASE-FX , LC , Dual Fiber , 1310nm , SMF , 20km , SFP Optical Transceiver Module
Features
Internal Calibration or External Calibration
Commercial : 0 to +70°C
Industrial : -40 to +85°C
Applications
Description
The SFP transceivers are high performance, cost effective modules supporting 155Mbps data-rate and 20km transmission distance with SMF.
The transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.
The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.
Absolute Maximum Ratings
Table 1 - Absolute Maximum Ratings
Parameter | Symbol | Min | Max | Unit |
Supply Voltage | Vcc | -0.5 | 4.5 | V |
Storage Temperature | Ts | -40 | +85 | °C |
Operating Humidity | - | 5 | 85 | % |
Recommended Operating Conditions
Table 2 - Recommended Operating Conditions
Parameter | Symbol | Min | Typical | Max | Unit | |
Operating Case Temperature | Standard | Tc | 0 | +70 | °C | |
Industrial | -40 | +85 | °C | |||
Power Supply Voltage | Vcc | 3.13 | 3.3 | 3.47 | V | |
Power Supply Current | Icc | 300 | mA | |||
Data Rate | 155 | Mbps |
Optical and Electrical Characteristics
Table 3 - Optical and Electrical Characteristics
Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
Transmitter | ||||||||
Centre Wavelength | λc | 1260 | 1310 | 1360 | nm | |||
Spectral Width (RMS) | σ | 4 | nm | |||||
Average Output Power | Pout | -14 | -8 | dBm | 1 | |||
Extinction Ratio | ER | 9 | dB | |||||
Optical Rise/Fall Time | tr/tf | 1.3 | ns | |||||
Data Input Swing Differential | VIN | 400 | 1800 | mV | 2 | |||
Input Differential Impedance | ZIN | 90 | 100 | 110 | Ω | |||
TX Disable | Disable | 2.0 | Vcc | V | ||||
Enable | 0 | 0.8 | V | |||||
TX Fault | Fault | 2.0 | Vcc | V | ||||
Normal | 0 | 0.8 | V | |||||
Receiver | ||||||||
Centre Wavelength | λc | 1260 | 1580 | nm | ||||
Receiver Sensitivity | -32 | dBm | 3 | |||||
Receiver Overload | -3 | dBm | 3 | |||||
LOS De-Assert | LOSD | -34 | dBm | |||||
LOS Assert | LOSA | -45 | dBm | |||||
LOS Hysteresis | 1 | 4 | dB | |||||
Data Output Swing Differential | Vout | 370 | 1800 | mV | 4 | |||
LOS | High | 2.0 | Vcc | V | ||||
Low | 0.8 | V | ||||||
Notes:
1. The optical power is launched into SMF.
2. PECL input, internally AC-coupled and terminated.
3. Measured with a PRBS 223-1 test pattern @155Mbps, BER ≤1×10-10
4. Internally AC-coupled.
Timing and Electrical
Table 4 - Timing and Electrical
Parameter | Symbol | Min | Typical | Max | Unit |
Tx Disable Negate Time | t_on | 1 | ms | ||
Tx Disable Assert Time | t_off | 10 | µs | ||
Time To Initialize, including Reset of Tx Fault | t_init | 300 | ms | ||
Tx Fault Assert Time | t_fault | 100 | µs | ||
Tx Disable To Reset | t_reset | 10 | µs | ||
LOS Assert Time | t_loss_on | 100 | µs | ||
LOS De-assert Time | t_loss_off | 100 | µs | ||
Serial ID Clock Rate | f_serial_clock | 400 | KHz | ||
MOD_DEF (0:2)-High | VH | 2 | Vcc | V | |
MOD_DEF (0:2)-Low | VL | 0.8 | V |
Diagnostics
Table 5 – Diagnostics Specification
Parameter | Range | Unit | Accuracy | Calibration |
Temperature | 0 to +70 | °C | ±3°C | Internal / External |
-40 to +85 | ||||
Voltage | 3.0 to 3.6 | V | ±3% | Internal / External |
Bias Current | 0 to 100 | mA | ±10% | Internal / External |
TX Power | -14 to -8 | dBm | ±3dB | Internal / External |
RX Power | -28 to -3 | dBm | ±3dB | Internal / External |
Digital Diagnostic Memory Map
The transceivers provide serial ID memory contents and diagnostic information about the present operating conditions by the 2-wire serial interface (SCL, SDA).
The diagnostic information with internal calibration or external calibration all are implemented, including received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring.
The digital diagnostic memory map specific data field defines as following.
Pin Descriptions
Pin | Signal Name | Description | Plug Seq. | Notes |
1 | VEET | Transmitter Ground | 1 | |
2 | TX FAULT | Transmitter Fault Indication | 3 | Note 1 |
3 | TX DISABLE | Transmitter Disable | 3 | Note 2 |
4 | MOD_DEF(2) | SDA Serial Data Signal | 3 | Note 3 |
5 | MOD_DEF(1) | SCL Serial Clock Signal | 3 | Note 3 |
6 | MOD_DEF(0) | TTL Low | 3 | Note 3 |
7 | Rate Select | Not Connected | 3 | |
8 | LOS | Loss of Signal | 3 | Note 4 |
9 | VEER | Receiver ground | 1 | |
10 | VEER | Receiver ground | 1 | |
11 | VEER | Receiver ground | 1 | |
12 | RD- | Inv. Received Data Out | 3 | Note 5 |
13 | RD+ | Received Data Out | 3 | Note 5 |
14 | VEER | Receiver ground | 1 | |
15 | VCCR | Receiver Power Supply | 2 | |
16 | VCCT | Transmitter Power Supply | 2 | |
17 | VEET | Transmitter Ground | 1 | |
18 | TD+ | Transmit Data In | 3 | Note 6 |
19 | TD- | Inv. Transmit Data In | 3 | Note 6 |
20 | VEET | Transmitter Ground | 1 |
Notes:
Plug Seq.: Pin engagement sequence during hot plugging.
1) TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; Logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V.
2) TX Disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7k~10kΩ resistor. Its states are:
Low (0 to 0.8V): Transmitter on
(>0.8V, < 2.0V): Undefined
High (2.0 to 3.465V): Transmitter Disabled
Open: Transmitter Disabled
3) Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7k~10kΩ resistor on the host board. The pull-up voltage shall be VccT or VccR.
Mod-Def 0 is grounded by the module to indicate that the module is present
Mod-Def 1 is the clock line of two wire serial interface for serial ID
Mod-Def 2 is the data line of two wire serial interface for serial ID
4) LOS is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor. Pull up voltage between 2.0V and Vcc+0.3V. Logic 1 indicates loss of signal; Logic 0 indicates normal operation. In the low state, the output will be pulled to less than 0.8V.
5) RD-/+: These are the differential receiver outputs. They are internally AC-coupled 100 differential lines which should be terminated with 100Ω (differential) at the user SERDES.
6) TD-/+: These are the differential transmitter inputs. They are internally AC-coupled, differential lines with 100Ω differential termination inside the module.
E-link China Technology Co., Ltd.
Established in 2001& headquartered in Shenzhen, E-link China Technology Co., Ltd. (E-link) is a leading Fiber Optic Communication and CCTV Security Transmission product manufacturer in China. Our main products include active equipments including fiber media converters, CCTV fiber converters, CCTV over Ethernet Converters (HD-SDI over Ethernet, HDMI over Ethernet, Power over Ethernet), etc. With rich experience in providing high quality products in telecom and CCTV business, E-link has a large manufacturing base in Shenzhen, able to deliver cost-effective solutions to serve our customers successfully.
E-Link Quality:
• ISO9001 Quality System
• Full-Spectrum environment and electrical testing of all product design
• 48 hours aging test before delivery
• Qualified CE, RoHS, FCC
Since the launch of our products on the domestic market and international market, we have won a good reputation for our high quality products and sincere services. Our products are widely applied to network systems of Telecom, Radio and Television, Public Security, Bank ,ect. To be in line with different needs of different customers, we have people to trace the latest market information so as to keep our products competitive and vital.
Our knowledgeable sales, technical support and engineering staff are dedicated to understanding your requirements and designing products & solutions to meet your needs. We shall be pleased to provide you fiber optical network products with our best price, superior quality and fast delivery.