ASCENT’s CWDM SFP+ transceivers are designed for use in 10-Gigabit Ethernet links with distances up to 80 km over single-mode fiber. These transceivers include a a PIN photo detector diode and uncooled CWDM DFB laser transmitter (1260 nm to 1370 nm) or an APD receiver and CWDM EML transmitter (1470 nm to 1610 nm). Digital diagnostic functions are available via an I2C interface. This module is designed for single-mode fiber and operates at wavelengths between 1270 nm to 1610 nm.
• Up to 40 km transmission on SMF
• Uncooled CWDM DFB Laser and PIN receiver (1270 nm to 1370 nm)
• CWDM EML transmitter and PIN receiver (1470 nm to 1610 nm)
• Metal enclosure for lower EMI
• 2-wire interface with integrated Digital Diagnostic monitoring
• Hot-pluggable SFP+ footprint
• Specifications compliant with SFF 8472
• Compliant with SFP+ MSA with LC connector
• Single 3.3 V power supply
• Commercial/Industrial case operating temperature range: 0 °C to +70 °C / -40 °C to +85 °C
• Without CDR (standard) or with CDR supported 9.95 Gb/s to 11.3Gb/s reference-free
Absolute Maximum Ratings
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Storage Temperature | Ts | ‑40 | ‑ | 85 | °C | |
Relative Humidity | RH | 5 | ‑ | 95 | % | |
Power Supply Voltage | VCC | ‑0.3 | ‑ | 4 | V | |
Signal Input Voltage | Vcc‑0.3 | ‑ | Vcc+0.3 | V |
Recommended Operating Conditions
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note | |
Case Operating Temperature | Tcase | 0 | ‑ | 70 | °C | Commercial | |
‑40 | ‑ | 85 | °C | Industrial | |||
Power Supply Voltage | VCC | 3.14 | 3.3 | 3.47 | V | ||
Power Supply Current | ICC | ‑ | 450 | mA | |||
Data Rate | BR | 10.3125 | 11.3 | Gbps | |||
Transmission Distance | TD | ‑ | 40 | km | |||
Coupled fiber | Single‑mode fiber | 9/125 µm SMF |
Optical Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Transmitter | ||||||
Average Launched Power (1270 nm to 1370 nm) | POUT | 0 | 5 | dBm | 1 | |
Average Launched Power (1470 nm to 1610 nm) | POUT | ‑1 | 3 | dBm | 2 | |
Extinction Ratio (1270 nm to 1370 nm) | ER | 3.5 | dB | |||
Extinction Ratio (1470 nm to 1610 nm) | ER | 8.2 | dB | |||
Center Wavelength | λc | λc‑6.5 | λc+6.5 | nm | 3 | |
Spectral Width (‑20dB) | σ | 1.0 | nm | |||
SMSR | 30 | dB | ||||
Transmitter OFF Output Power (1470 nm to 1610 nm) | Poff | ‑30 | dBm | |||
Transmitter and Dispersion Penalty (1470 nm to 1610 nm) | TDP | 2.0 | dB | |||
Output Eye Mask | Compliant with IEEE 802.3ae | |||||
Receiver | ||||||
Input Optical Wavelength | λ | 1270 | 1610 | nm | ||
Receiver Sensitivity (1270 nm to 1370 nm) | Psen | ‑15 | dBm | 4 | ||
Receiver Sensitivity (1470 nm to 1610 nm) | ‑16 | 5 | ||||
Input Saturation Power (Overload) (1270 nm to 1370 nm) | Psat | 0.5 | dBm | |||
Input Saturation Power (Overload) (1470 nm to 1610 nm) | Psat | 0 | dBm | |||
LOS Assert (1270 nm to 1370 nm) | LOSA | ‑30 | dBm | |||
LOS Assert (1470 nm to 1610 nm) | LOSA | ‑35 | dBm | |||
LOS De‑Assert (1270 nm to 1370 nm) | LOSD | ‑17 | dBm | |||
LOS De‑Assert (1470 nm to 1610 nm) | LOSD | ‑26 | dBm | |||
LOS Detect Hysteresis | PHys | 0.5 | dB |
Notes:
1. 1. Class 1 Laser Safety per FDA/CDRH and IEC‑825‑1 regulations.
2. Launched power (avg.) is power coupled into a single‑mode fiber with master connector. (Before of Life)
3. For λc refer to wavelength selection
4. Measured with a PRBS 231‑1 test pattern, @ 10.325 Gb/s, BER<10‑12.
5. Measured with conformance test signal for BER = 10–12 @ 10.3125 Gbps, PRBS = 231‑1, NRZ, Optical source with worst ER, Wavelength between 1470 nm and 1610 nm; back to back.
Electrical Characteristics
Parameter | Symbol | Min | Typ. | Max | Unit | Note |
Supply Voltage | Vcc | 3.14 | 3.3 | 3.46 | V | |
Supply Current (Note 1) | Icc | 450 | mA | 1270 nm to 1370 nm | ||
400 | mA | 1470 nm to 1610 nm | ||||
460 | mA | 1470 nm to 1610 nm (industrial) | ||||
430 | mA | 1470 nm to 1610 nm with CDR | ||||
490 | mA | 1470 nm to 1610 nm (industrial) with CDR | ||||
Transmitter | ||||||
Input Differential Impedance | Rin | 100 | Ω | 2 | ||
Differential Data Input Swing (1270 nm to 1370 nm) | Vin, pp | 180 | 1200 | mV | ||
Differential Data Input Swing (1470 nm to 1610 nm) | Vin, pp | 180 | 700 | mV | ||
Transmit Disable Voltage (1270 nm to 1370 nm) | VDis | Vcc‑1.3 | Vcc | V | ||
Transmit Disable Voltage (1470 nm to 1610 nm) | VDis | 2.0 | Vcc | V | ||
Transmit Enable Voltage | VEN | Vee | Vee+ 0.8 | V | 3 | |
Transmit Disable Assert Time | 10 | µs | ||||
Receiver | ||||||
Differential Data Output Swing (1270 nm to 1370 nm) | Vout, pp | 300 | 850 | mV | 4 | |
Differential Data Output Swing (1470 nm to 1610 nm) | Vout, pp | 400 | 800 | mV | 4 | |
Data Output Rise Time (1270 nm to 1370 nm) | tr | 30 | ps | 5 | ||
Data Output Rise Time (1470 nm to 1610 nm) | tr | 30 | ps | 5 | ||
Data Output Fall Time (1270 nm to 1370 nm) | tf | 28 | ps | 5 | ||
Data Output Fall Time (1470 nm to 1610 nm) | tf | 28 | ps | 5 | ||
LOS Fault (1270 nm to 1370 nm) | VLOS_fault | Vcc‑1.3 | V | 6 | ||
LOS Output High Level (1470 nm to 1610 nm) | VLOS‑H | 2.0 | VCCHOST | V | 6 | |
LOS Normal (1270 nm to 1370 nm) | VLOS_norm | Vee | Vee+0.8 | V | 6 | |
LOS Output Low Level (1470 nm to 1610 nm) | VLOS‑L | Vee | Vee+0.8 | V | 6 |
Notes:
1. Measured with receive Pin = Psen, Vcc = 3.3 V, operation temperature range, without air flow.
2. Connected directly to TX data input pins. AC coupled.
3. Or open circuit.
4. Input 100 Ω differential termination.
5. These are unfiltered 20 % to 80 % values.
6. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
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