Ascent’s QSFP28 100G DR1 Ethernet module is a transceiver module designed for 500m optical communication applications, and it is compliant with IEEE 802.3cu 100GBASE-DR standard.
• Compliant with QSFP28 Standard SFF-8636 Rev 2.10a
• Compliant with IEEE 802.3cd 100GBASE-DR
• High speed I/O electrical interface (CAUI-4)
• Single 3.3V Supply Voltage
• Maximum power consumption 4W
• 0-70 ºC Case Operating Temperature
• 1310nm EML laser and PIN Receiver Array
• QSFP28 MSA package with duplex LC connector
• Two Wire Serial Interface with Digital Diagnostic Monitoring
• Complies with EU Directive 2011/65/EU (RoHS compliant)
• Class 1 Laser
Absolute Maximum Ratings
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Storage Temperature | TS | ‑40 | ‑ | +85 | °C | |
Supply Voltage | VCC | ‑0.3 | ‑ | 3.6 | V | |
Relative Humidity (non‑condensing) | RH | 5 | ‑ | 95 | % | |
Data Input Voltage – Differential | |VDIP‑VDIN| | ‑ | ‑ | 1.0 | V | |
Control Input Voltage | VI | ‑0.3 | ‑ | Vcc+0.5 | V | |
Control Output Current | IO | ‑20 | ‑ | 20 | mA |
Recommended Operating Conditions
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Operating Case Temperature | TOPR | 0 | ‑ | 70 | °C | |
Power Supply Voltage | VCC | 3.135 | 3.3 | 3.465 | V | |
Instantaneous Peak Current at Hot Plug | ICC_IP | ‑ | ‑ | 1600 | mA | |
Sustained Peak Current at Hot Plug | ICC_SP | ‑ | ‑ | 1320 | mA | |
Maximum Power Dissipation | PD | ‑ | ‑ | 4 | W | 1 |
Maximum Power Dissipation, Low Power Mode | PDLP | ‑ | ‑ | 1.5 | W | |
Signaling Rate | SR | ‑ | 53.125 | ‑ | GBd | |
Control Input Voltage High | VIH | VCC*0.7 | ‑ | VCC+0.3 | V | |
Control Input Voltage Low | VIL | ‑0.3 | ‑ | VCC*0.3 | V | |
Two Wire Serial Interface Clock Rate | ‑ | ‑ | ‑ | 400 | kHz | |
Power Supply Noise | ‑ | ‑ | ‑ | 66 | mVpp | 2 |
Rx Differential Data Output Load | ‑ | ‑ | 100 | ‑ | ohms | |
Operating Distance | ‑ | 2 | ‑ | 500 | m |
Notes:
1. With power supply voltage 3.3V.
2. 10 Hz to 10 MHz.
Optical and Electrical Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Transmitter | ||||||
Wavelength | λC | 1304.5 | 1311 | 1317.5 | nm | |
Side Mode Suppression Ratio | SMSR | 30 | ‑ | ‑ | dB | |
Average Optical Launch Power | POUT | ‑2.9 | ‑ | 4 | dBm | |
Average Launch Power Tx_Off | POUT_OFF | ‑ | ‑ | ‑15 | dBm | |
Extinction Ratio | ER | 3.5 | ‑ | ‑ | dB | |
Outer Optical Modulation Amplitude | OMAouter | ‑0.8 | ‑ | 4.2 | dBm | |
Launch Power in OMAouter Minus TDECQ for ER ≥ 4.5dB | OMAouter‑ TDECQ | ‑2.2 | ‑ | ‑ |
dBm | |
Launch Power in OMAouter Minus TDECQ for ER < 4.5dB | OMAouter‑ TDECQ | ‑1.9 | ‑ | ‑ |
dBm | |
Transmitter and Dispersion Eye Closure | TDECQ | ‑ | ‑ | 3.4 | dB | |
TDECQ – 10*log10(Ceq) | ‑ | ‑ | 3.4 | dB | ||
Transmitter transition time | ‑ | ‑ | 17 | ps | ||
RIN17.1OMA | RIN | ‑ | ‑ | ‑136 | dB/Hz | |
Optical return loss tolerance | ORLT | ‑ | ‑ | 15.5 | dB | |
Transmitter reflectance | TR | ‑ | ‑ | ‑26 | dB | |
Receiver | ||||||
Wavelength | λC | 1304.5 | 1311 | 1317.5 | nm | |
Damage Threshold | 5 | ‑ | ‑ | dBm | ||
Average Receive Power | ‑5.9 | ‑ | 4 | dBm | ||
Receive Power (OMAouter) | RP | ‑ | ‑ | 4.2 | dBm | |
Receiver Reflectance | RR | ‑ | ‑ | ‑26 | dB | |
Receiver Sensitivity (OMAouter) | RS | max(‑3.9, SECQ‑5.3) |
dBm | |||
Stressed Receiver Sensitivity | SRS | ‑ | ‑ | ‑1.9 | dBm | |
Stressed Receiver Sensitivity Test Conditions | ||||||
Stressed Eye Closure for PAM4 (SECQ) | SECQ | ‑ | 3.4 | ‑ | dB | |
SECQ – 10*log10(Ceq) | ‑ | ‑ | 3.4 | dB |
Electrical Specifications
Low‑Speed Signal: Compliant to SFF‑8679
High‑Speed Signal: Compliant to CAUI‑4 (IEEE 802.3‑2018)
Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
Transmitter (Module Input) | ||||||
Differential Data Input Amplitude | VIN, P‑P | 95 | ‑ | 900 | mVpp | 1 |
Differential Termination Mismatch | ‑ | ‑ | 10 | % | ||
LPMode, Reset and ModSelL | VIL | ‑0.3 | ‑ | Vcc*0.3 | V | |
VIH | VCC*0.7 | ‑ | VCC+0.3 | V | ||
Receiver (Module Output) | ||||||
Differential Data Output Amplitude | VOUT, P‑P | 250 | ‑ | 900 | mVpp | 1 |
Differential Termination Mismatch | ‑ | ‑ | 10 | % | ||
Output Rise/Fall Time, 20% to 80% | TR | 9.5 | ‑ | ‑ | ps | |
ModPrsL and IntL | VOL | 0 | ‑ | 0.4 | V | IOL = 4 mA |
VOH | VCC‑0.5 | ‑ | VCC+0.3 | V | IOL = ‑4 mA |
Note 1: Amplitude customization beyond these specs is dependent on validation in customer system
Support for 100GAUI‑4 at 26.5625 Gbd when using KP4 FEC in chip‑to‑module interface.
Timing for QSFP28 Soft Control and Status Functions
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Initialization Time | t_init | ‑ | ‑ | 15 | s | 1 |
Reset Init Assert Time | t_reset_init | 10 | ‑ | ‑ | µs | |
Serial Bus Hardware Ready Time | t_serial | ‑ | ‑ | 2000 | ms | |
Monitor Data Ready Time | t_data | ‑ | ‑ | 2000 | ms | |
Reset Assert Time | t_reset | ‑ | ‑ | 15 | s | 1 |
LPMode Assert Time | ton_LPMode | ‑ | ‑ | 100 | µs | |
LPMode De‑assert Time | toff_LPMode | ‑ | ‑ | 15 | s | 1 |
IntL Assert Time | ton_IntL | ‑ | ‑ | 200 | ms | |
IntL Deassert Time | toff_IntL | ‑ | ‑ | 500 | µs | |
Rx LOS Assert Time | ton_lol | ‑ | ‑ | 100 | ms | |
Tx Fault Assert Time | ton_Txfault | ‑ | ‑ | 200 | ms | |
Flag Assert Time | ton_flag | ‑ | ‑ | 200 | ms | |
Mask Assert Time | ton_mask | ‑ | ‑ | 100 | ms | |
Mask Deassert Time | toff_mask | ‑ | ‑ | 100 | ms | |
Application or Rate Select Change Time | t_ratesel | ‑ | ‑ | N/A | ms | 2 |
Power_over‑ride or Power‑set Assert Time | ton_Pdown | ‑ | ‑ | 100 | ms | |
Power_over‑ride or Power‑set De‑assert Time |
toff_Pdown |
‑ |
‑ |
15 |
s |
1 |
Notes:
1. DSP limitation.
2. This feature is unsupported.
I/O Timing for Squelch & Disable
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Rx Squelch Assert Time | ton_Rxsq | 500 | ms | 1 | ||
Rx Squelch Deassert Time | toff_Rxsq | 15 | s | 1 | ||
Tx Squelch Assert Time | ton_Txsq | 400 | ms | |||
Tx Squelch Deassert Time | toff_Txsq | 1500 | ms | 1 | ||
Tx Disable Assert Time | ton_txdis | 100 | ms | |||
Tx Disable Deassert Time | toff_txdis | 400 | ms | |||
Rx Output Disable Assert Time | ton_rxdis | 100 | ms | |||
Rx Output Disable Deassert Time | toff_rxdis | 100 | ms | |||
Squelch Disable Assert Time | ton_sqdis | 100 | ms | |||
Squelch Disable Deassert Time | toff_sqdis | 100 | ms |
Note 1: DSP limitation.
Digital Diagnostics
Parameter | Range | Accuracy | Unit | Calibration |
Temperature | 0 to 70 | ±3 | °C | Internal |
Voltage | 0 to VCC | 3 % | V | Internal |
Tx Bias Current (each Lane) | 0 to 100 | 10 % | mA | Internal |
Tx Output Power (each Lane) | ‑2.4 to 4.0 | ±3 | dB | Internal |
Rx Power (each Lane) | ‑6.4 to 4.5 | ±3 | dB | Internal |
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