ASCENT’s CWDM SFP+ transceivers are designed for use in 10-Gigabit Ethernet links with distances up to 10 km over single-mode fiber. These transceivers include a PIN photo detector diode and uncooled CWDM DFB laser transmitter. 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 10 km transmission on SMF
• Power dissipation < 1.5W
• Uncooled CWDM DFB Laser and PIN receiver
• 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 3.3V power supply
• Case operating temperature range: 0°C to +70 °C
• Compliant to 802.3ae 10GBASE-LR/LW
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 | Without air flow |
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 | ‑ | 10 | km | ||
Coupled fiber | Single mode fiber | 9/125 µm SMF |
Optical Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Transmitter | ||||||
Output Opt. Power | POUT | ‑6 | ‑0.5 | dBm | 1 | |
Optical Wavelength | λ | λ‑6.5 | λ+6.5 | nm | 2 | |
Spectral Width (‑20dB) | σ | 1 | nm | |||
Optical Extinction Ratio | ER | 3.5 | dB | |||
Side mode Suppression ratio | SMSR | 30 | dB | |||
Output Eye Mask | Compliant with IEEE 802.3ae | |||||
Receiver | ||||||
Receiver Sensitivity | Psen | ‑14.4 | dBm | 3 | ||
Input Saturation Power (Overload) | PSAT | 0.5 | dBm | |||
Input Optical Wavelength | λIN | 1270 | 1610 | nm | ||
LOS Assert | LOSA | ‑30 | dBm | |||
LOS De‑assert | LOSD | ‑17 | dBm | |||
LOS ‑Hysteresis | PHys | 0.5 | dB |
Notes:
1. Class 1 Laser Safety per FDA/CDRH and IEC‑825‑1 regulations.
2. λ is: 1270, 1290, 1310, 1330, 1350, 1370, 1390, 1410, 1430, 1450, 1470, 1490, 1510, 1530, 1550, 1570, 1590, 1610.
3. Measured with a PRBS 231‑1 test pattern, @ 10.325Gb/s, BER<10‑12.
Electrical Characteristics
Parameter | Symbol | Min | Typ. | Max | Unit | Note |
Supply Voltage | Vcc | 3.14 | 3.3 | 3.46 | V | |
Supply Current | Icc | 450 | mA | |||
Transmitter | ||||||
Input differential impedance | Rin | 100 | Ω | 1 | ||
Differential data input swing | Vin, pp | 180 | 1200 | mV | ||
Transmit Disable Voltage | VD | Vcc–1.3 | Vcc | V | ||
Transmit Enable Voltage | VEN | Vee | Vee+ 0.8 | V | 2 | |
Transmit Disable Assert Time | 10 | us | ||||
Receiver | ||||||
Differential data output swing | Vout, pp | 300 | 850 | mV | 3 | |
Data output rise time | tr | 30 | ps | 4 | ||
Data output fall time | tf | 30 | ps | 4 | ||
LOS Fault | VLOS fault | Vcc–1.3 | VccHOST | V | 5 | |
LOS Normal | VLOS norm | Vee | Vee+0.8 | V | 5 |
Notes:
1. Connected directly to TX data input pins. AC coupled thereafter.
2. Or open circuit.
3. Input 100 Ω differential termination.
4. These are unfiltered 20 % to 80 % values
5. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
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