The SFP transceivers are high performance, cost effective modules supporting data-rate of 1.25Gbps and 80km transmission distance with SMF.
The transceiver consists of three sections: an uncooled CWDM DFB 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 |
| Power Supply Voltage |
Vcc |
3.13 |
3.3 |
3.47 |
V |
| Power Supply Current |
Icc |
|
|
300 |
mA |
| Data Rate |
|
|
1.25 |
|
Gbps |
DF-xx24-08C(D)
See table3 below for "xx" values
Table3 -λC Wavelength Guide
Optical and Electrical Characteristics
DF-xx24-08C(D): (CWDM and PIN, 80km Reach)
Table 4 - Optical and Electrical Characteristics
| Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
Notes |
| Transmitter |
| Centre Wavelength |
λc |
λc-6.5 |
λc |
λc+6.5 |
nm |
|
| Spectral Width (-20dB) |
λ |
|
|
1 |
nm |
|
| Side Mode Suppression Ratio |
SMSR |
30 |
|
|
dB |
|
| Average Output Power |
Pout |
0 |
|
5 |
dBm |
1 |
| Extinction Ratio |
ER |
9 |
|
|
dB |
|
| Optical Rise/Fall Time (20%~80%) |
tr/tf |
|
|
0.26 |
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 |
| Receiver Sensitivity |
|
|
|
-23 |
dBm |
3 |
| Receiver Overload |
|
-3 |
|
|
dBm |
3 |
| LOS De-Assert |
LOSD |
|
|
-24 |
dBm |
|
| LOS Assert |
LOSA |
-35 |
|
|
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 27-1 test pattern @1250Mbps, BER ≤1×10-12.
4. Internally AC-coupled.
Timing and Electrical
Table 5 - 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 |
| Voltage |
3.0 to 3.6 |
V |
±3% |
Internal / External |
| Bias Current |
0 to 100 |
mA |
±10% |
Internal / External |
| TX Power |
0 to +5 |
dBm |
±3dB |
Internal / External |
| RX Power |
-23 to -3 |
dBm |
±3dB |
Internal / External |
Mechanical Dimensions
Why choose Takfly ?
Service:
1.Customer's logo: Acceptable
2.General inspection on fixing before packing
3.Third party inspection: Acceptable
Quality Control:
All products must go through five checks before manufacturing process
1.Material incoming inspection before production
2.Full check after every individual process finished
3.Full check after production half-done
4.Full check before packing
5.Spots check after production packed before shipping
Advantage:
1.15 years experience in manufacturing fiber optic products..
2.Availability of R & D with more than 10 engineers.
3.Available of design and making mold with special molding house.
4.High quality, attractive price and fast delivery(2-7days)
5.OEM, ODM customer designs are also welcomed
6.More than 200 worker
7.Excellent service
Delivery:
1.Packing: Plastic bag& carton, Neutral packing or as your required.
2.Sample time: 1-3 days after confirmation.
3.Order lead time: 2-7working days depend on quantity and products.
4.Shipping port: Shenzhen, HK or other ports as you required.
5.Shipping term: EXW or FOB
Shipping:
1.Once confirmed the order, and payment sent after finishing goods.
2.Goods will be sent within 7 days with the fast, reasonable and efficient shipping mode such as DHL, EMS, UPS,FEDEX, TNT, etc.
3.Please make sure your postal address is correct. Any lost and mistakes because of wrong address.
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