40G QSFP+ ER4 40Km 1310nm LC Opitcal Transceiver
The QSFP+ 40G ER4 RQ-40G-ER4 is a transceiver module designed for 40km optical communication applications. The design is compliant to 40GBASE-ER4 of the IEEE P802.3ba standard. The module converts 4 inputs channels (ch) of 10Gb/s electrical data to 4 CWDM optical signals, and multiplexes them into a single channel for 40Gb/s optical transmission. Reversely, on the receiver side, the module optically de-multiplexes a 40Gb/s input into 4 CWDM channels signals, and converts them to 4 channel output electrical data.
Absolute Maximum Ratings
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| Storage Temperature | TS | -40 | | +85 | °C |
| Supply Voltage | VCCT, R | -0.5 | | 4 | V |
| Relative Humidity | RH | 0 | | 85 | % |
Recommended Operating Environment:
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| Case operating Temperature | TC | 0 | | +70 | °C |
| Supply Voltage | VCCT, R | +3.13 | 3.3 | +3.47 | V |
| Supply Current | ICC | | | 1000 | mA |
| Power Dissipation | PD | | | 3.5 | W |
Electrical Characteristics(TOP = 0 to 70 °C, VCC= 3.13 to 3.47 Volts
| Parameter | Symbol | Min | Typ | Max | Unit | Note |
| Data Rate per Channel | | - | 10.3125 | 11.2 | Gbps | |
| Power Consumption | | - | 2.5 | 3.5 | W | |
| Supply Current | Icc | | 0.75 | 1.0 | A | |
| Control I/O Voltage-High | VIH | 2.0 | | Vcc | V | |
| Control I/O Voltage-Low | VIL | 0 | | 0.7 | V | |
| Inter-Channel Skew | TSK | | | 150 | Ps | |
| RESETL Duration | | | 10 | | Us | |
| RESETL De-assert time | | | | 100 | ms | |
| Power On Time | | | | 100 | ms | |
| Transmitter |
| Single Ended Output Voltage Tolerance | | 0.3 | | 4 | V | 1 |
| Common mode Voltage Tolerance | | 15 | | | mV | |
| Transmit Input Diff Voltage | VI | 150 | | 1200 | mV | |
| Transmit Input Diff Impedance | ZIN | 85 | 100 | 115 | | |
| Data Dependent Input Jitter | DDJ | | 0.3 | | UI | |
| Receiver |
| Single Ended Output Voltage Tolerance | | 0.3 | | 4 | V | |
| Rx Output Diff Voltage | Vo | 370 | 600 | 950 | mV | |
| Rx Output Rise and Fall Voltage | Tr/Tf | | | 35 | ps | 1 |
| Total Jitter | TJ | | 0.3 | | UI | |
Note:
1. 20～80%
Optical Parameters(TOP = 0 to 70°C, VCC = 3.0 to 3.6 Volts)
| Parameter | Symbol | Min | Typ | Max | Unit | Ref. |
| Transmitter |
| Wavelength Assignment | L0 | 1264.5 | 1271 | 1277.5 | nm | |
| L1 | 1284.5 | 1291 | 1297.5 | nm | |
| L2 | 1304.5 | 1311 | 1317.5 | nm | |
| L3 | 1324.5 | 1331 | 1337.5 | nm | |
| Side-mode Suppression Ratio | SMSR | 30 | - | - | dB | |
| Total Average Launch Power | PT | - | - | 8.3 | dBm | |
| Average Launch Power, each Lane | | -3 | - | 5 | dBm | |
| TDP, each Lane | TDP | | | 2.3 | dB | |
| Extinction Ratio | ER | 3.5 | 6.0 | | dB | |
| Transmitter Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3} | | {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} | | | | |
| Optical Return Loss Tolerance | | - | - | 20 | dB | |
| Average Launch Power OFF Transmitter, each Lane | Poff | | | -30 | dBm | |
| Relative Intensity Noise | Rin | | | -128 | dB/HZ | 1 |
| Optical Return Loss Tolerance | | - | - | 12 | dB | |
| Receiver |
| Damage Threshold | THd | 3 | | | dBm | 1 |
| Average Power at Receiver Input, each Lane | R | -21 | | -6 | dBm | |
| Receive Electrical 3 dB upper Cut off Frequency, each Lane | | | | 12.3 | GHz | |
| RSSI Accuracy | | -2 | | 2 | dB | |
| Receiver Reflectance | Rrx | | | -26 | dB | |
| Receiver Power (OMA), each Lane | | - | - | 3.5 | dBm | |
| Receive Electrical 3 dB upper Cutoff Frequency, each Lane | | | | 12.3 | GHz | |
| LOS De-Assert | LOSD | | | -25 | dBm | |
| LOS Assert | LOSA | -35 | | | dBm | |
| LOS Hysteresis | LOSH | 0.5 | | | dB | |
Note
1. 12dB Reflection
Order information
| Product Number | Data Rate(Gb/s) | Wavelength(nm) | Reach(km) | LD | Tx Power(dBm) | PD | Rx Sens(dBm) | Temperature(℃) |
| RQ-40G-ER4 | 40 | CWDM4 | 40 | DML | -2.7~4.5 | APD | <-19 | 0~70 |
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