Product Features:
l Up to 2.488Gbps Data Links;
l 18-Wavelength CWDM DFB LD Transmitter from;
1270nm to 1610nm, with Step 20nm;
l Maximum link length of 80km on 9/125um SMF;
l Hot-Pluggable SFP Footprint Duplex LC Connector Interface;
l Class 1 FDA and IEC60825-1 Laser Safety Compliant;
l Compliant with SFP MSA Specification;
l Compliant with SFF-8472 Digital Diagnostic Monitor Interface;
l Single +3.3V power supply and TTL Control Logic Interface;
l Compliant with SFF-8472;
l Safety Certification: TUV/UL/FDA;
l RoHS Compliant;
l Operating Case Temperature: Commercial: 0℃~+70℃ Extended: -20℃~+85℃
I. Pin Diagram
Pinout of Connector Block on Host Board
II. Pin Descriptions
Pin | Symbol | Name/Description | Ref. |
1 | V EET | Transmitter Ground (Common with Receiver Ground) | 1 |
2 | T FAULT | Transmitter Fault. | 2 |
3 | T DIS | Transmitter Disable. Laser output disabled on high or open. | 3 |
4 | MOD_DEF(2) | Module Definition 2. Data line for Serial ID. | 4 |
5 | MOD_DEF( 1) | Module Definition 1. Clock line for Serial ID. | 4 |
6 | MOD_DEF(0) | Module Definition 0. Grounded within the module. | 4 |
7 | Rate Select | No connection required | Function not available |
8 | LOS | Loss of Signal indication. Logic “0” indicates normal operation. | 5 |
9 | VEER | Receiver Ground (Common with Transmitter Ground) | 1 |
10 | VEER | Receiver Ground (Common with Transmitter Ground) | 1 |
11 | VEER | Receiver Ground (Common with Transmitter Ground) | 1 |
12 | RD- | Receiver Inverted DATA out (CML). AC Coupled | 6 |
13 | RD+ | Receiver Non-inverted DATA out (CML). AC Coupled | 6 |
14 | V EER | Receiver Ground (Common with Transmitter Ground) | 1 |
15 | V CCR | Receiver Power Supply | 7 |
16 | V CCT | Transmitter Power Supply | 7 |
17 | V EET | Transmitter Ground (Common with Receiver Ground) | 1 |
18 | TD+ | Transmitter Non-Inverted DATA in. AC Coupled. | |
19 | TD- | Transmitter Inverted DATA in. AC Coupled. | |
20 | V EET | Transmitter Ground (Common with Receiver Ground) | 1 |
Notes:
1. VeeR and VeeT may be internally connected within the SFP module.
2. TX Fault is an open collector/drain output, which should be pulled up with a 4.7K-10KΩ
resistor on the host board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be pulled to<0.8V.
3. TX disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7-10 KΩ resistor. Its states are:
Low (0 – 0.8V): Transmitter on
(>0.8, < 2.0V): Undefined
High (2.0 – 3.465V): Transmitter Disabled
Open: Transmitter Disabled
4. 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
5. VeeR and VeeT may be internally connected within the SFP module.
6. RD-/+: These are the differential receiver outputs. They are AC coupled 100Ω differential
lines which should be terminated with 100Ω (differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board. The voltage swing on these lines will be between 400 and 2000 mV differential (200 – 1000 mV single ended) when properly terminated.
7. VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V
±5% at the SFP connector pin. Maximum supply current is 300mA. Recommended host board power supply filtering is shown below. Inductors with DC resistance of less than 1 ohm should be used in order to maintain the required voltage at the SFP input pin with 3.3V supply voltage. When the recommended supply-filtering network is used, hot plugging of the SFP transceiver module will result in an inrush current of no more than 30Ma greater than the steady state value.
8. VccR and VccT may be internally connected within the SFP transceiver module.
TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board. The inputs will accept differential swings of 400-2000mV (200 -1000mV single-ended).
III. Absolute Maximum Ratings
Parameter | Symbol | Min | Type | Max | Unit | Ref. |
Maximum Supply Voltage | Vcc | -0.5 | 3.6 | V | ||
Storage Temperature | TS | -20 | 85 | ℃ | ||
Case Operating Temperature |
TOP | 0 | 70 | ℃ | Commercial | |
-20 | 85 | Extended | ||||
Storage Ambient Humidity | RH | 5 | 95 | % | 1 |
Notes:
1. Non-condensing.
IV. Optical Characteristics (TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)
(CWDM DFB and APD, 29dB)
Parameter | Symbol | Min. | Typ. | Max. | Unit | Remark |
Transmitter | ||||||
Center Wavelength | λc | λc -6 | λc | λc+7.5 | nm | |
Spectral Width(-20dB) | Pm | 1 | nm | |||
Side-mode Suppression Ratio | SMSR | 30 | dB | |||
Average Output Power | Pavg | 0 | 5 | dBm | ||
Extinction Ratio | ER | 8.2 | dB | |||
Spectrum Bandwidth(-20dB) | σ | 1 | nm | |||
Rise/Fall Time（20%~80%） | tr/tf | 150 | Ps | |||
TX_Disable Assert Time | t_off | 10 | us | |||
Transmitter OFF Output Power | Pout | -45 | dBm | |||
Receiver | ||||||
Center Wavelength | λc | 1100 | 1650 | nm | ||
Receiver overload | Pmax | -9 | dBm | |||
Return Loss | 12 | dB | ||||
Receiver Sensitivity, Average Power | -28 | dBm | 1 | |||
Receiver Saturation Power | Psat | 1 | dBm | |||
Loss of Signal Assert | PA | -30 | dBm | |||
Loss of Signal De-assert | PD | -42 | dBm | 2 | ||
LOS Hysteresis | PD- PA | 0.5 | dB | |||
Notes:
1. Measured with Light source 1xx0nm, ER=9dB; BER =<10^- 12 @PRBS=2^7-1 NRZ
2.When LOS De-asserted, the RX data+/- output is signal output.
V. Electrical Characteristics (TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)
Parameter | Symbol | Min | Type | Max | Unit | Ref. |
Supply Voltage | Vcc | 3.135 | 3.3 | 3.465 | V | |
Supply Current | Icc | 300 | mA | |||
Ambient Humidity | HA | 5 | 70 | % | Non-condensing | |
Transmission Distance | 80 | km | ||||
Coupled Fiber | Single mode fiber | 9/ 125um G.652 | ||||
Transmitter | ||||||
Input differential impedance | Rin | 85 | 100 | 115 | Ohm | 1 |
Differential data input swing | Vin, pp | 400 | 1600 | mVpp | 2 | |
Transmit Disable Voltage | VD | 2 | VCC+0.3 | V | ||
Transmit Enable Voltage | VEN | 0 | 0.8 | V | ||
Receiver | ||||||
Differential data output swing | Vout, pp | 400 | 1200 | mV | 2 | |
Output differential impedance | Rout | 85 | 100 | 115 | Ohm | |
LOS Fault | VLOS_fault | 2 | Vcc+0.3 | V | 3 | |
LOS Normal | VLOS_norm | 0 | 0.8 | V | 3 | |
MOD_DEF ( 0:2 ) | VOH | 2.5 | V | |||
VOL | 0 | 0.5 | V | |||
Notes:
1. Connected directly to TX data input pins.AC coupling from pins into laser driver IC.
2. LVPECL logic, internally AC coupled.
3. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
VI. Digital Diagnostic Memory Map
VII. Digital Diagnostic Monitoring Information
Parameter | Unit | Accuracy |
Case Temperature | ℃ | ±3 |
Supply Voltage | V | ±3% |
Tx Bias Current | mA | ±10% |
Tx Optical Power | dB | ±3 |
Rx Optical Power | dB | ±3 |
VIII. Recommended Interface Circuit
IX. Mechanical Specifications
SFP wire mechanical drawing (Unit: mm)
Product Features
l Up to 2.488Gbps Data Links
l 18-Wavelength CWDM DFB LD Transmitter from
1270nm to 1610nm, with Step 20nm
l Maximum link length of 80km on 9/125um SMF
l Hot-Pluggable SFP Footprint Duplex LC Connector Interface
l Class 1 FDA and IEC60825-1 Laser Safety Compliant
l Compliant with SFP MSA Specification
l Compliant with SFF-8472 Digital Diagnostic Monitor Interface
l Single +3.3V power supply and TTL Control Logic Interface
l Compliant with SFF-8472
l Safety Certification: TUV/UL/FDA
l RoHS Compliant
l Operating Case Temperature: Commercial: 0℃~+70℃ Extended: -20℃~+85℃
Applications | Compliance |
Fiber Channel Switch Infrastructure | SFP MSA |
ATM Switches and Routers | SFF-8472 |
SONET / SDH Switch Other optical link | ROHS |
PRODUCT SELECTIONS
Wavelength(nm) | xx | Clasp Color Code | Wavelength (nm) | xx | Clasp Color Code |
1471 | 47 | Gray | 1551 | 55 | Yellow |
1491 | 49 | Violet | 1571 | 57 | Orange |
1511 | 51 | Blue | 1591 | 59 | Red |
1531 | 53 | Green | 1611 | 61 | Brown |
Ordering Information
Part No. | Bit Rate (Gbps) | Laser (nm) | Distance(km) | Fiber Type | DDMI | Connector | Temp |
FSGELCXX-K80 C | 2.488 | 1270~ 1610 | 80 | SMF | YES | LC | 0℃~70℃ |
FSGELCXX-K80I | 2.488 | 1270~ 1610 | 80 | SMF | YES | LC | -20℃~85℃ |