Alpha Bridge AQSFP28-100G-DR1

Features

  • QSFP28 MSA compliant
  • Support 125Gb/s
  • 100G Lambda MSA 100G-DR Specification compliant
  • Up to 500m transmission on single mode fiber (SMF) with FEC
  • 4x25G electrical interface (OIF CEI-28G-VSR)
  • Maximum power consumption 4W
  • LC duplex connector
  • Commercial case temperature range of 0°C to 70°C
  • Single 3V power supply
  • RoHS compliant

Application

  • 100G Ethernet
  • Data Center Interconnect
  • Enterprise networking

Description

This product is a transceiver module designed for 500m optical communication applications. The module incorporates one channel optical signal, on 1310nm center wavelength, operating at 50Gbaud data rate. The transmitter path incorporates an EML Driver integrated in the DSP and a cooled EML together. On the receiver path, the input optical signal is coupled to a Pin photodiode detector. A DSP based gearbox is used to convert 4x25Gbps NRZ signals to 1x50Gbaud PAM4 signal. Also a 4-channel retimer and FEC block are integrated in this DSP. The electrical interface is compliant with IEEE 802.3cd and QSFP28 MSA in the transmitting and receiving directions, and optical interface is compliant to IEEE 802.3cd and 100G Lambda MSA with Duplex LC connector. The module has a maximum power consumption of 4.0W.

The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSP28 Multi-Source Agreement (MSA). It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.

Absolute Maximum Ratings AQSFP28-100G-DR1

Parameter Symbol Min. Typ. Max. Units Note
Storage Temperature TS -40   85 °C  
Operating Case Temperature TOP 0   70 °C  
Maximum Supply Voltage Vcc -0.5   3.6 V  
Relative Humidity (Non-condensing RH 0   85 %  
Damaged Threshold THd 5.5     dBm  

Recommended Operating Conditions AQSFP28-100G-DR1

Parameter Symbol Min. Typ. Max. Units Note
Supply Voltage Vcc 3.135 3.3 3.465 V  
Case Temperature Top 0   70 °C  
Electrical Data Rate, each Lane     25.78125   Gb/s  
Optical Data Rate (PAM4)     53.125   Gb/s  
Data Rate Accuracy   -100   100 ppm  
Pre-FEC Bit Error Ratio       2.4x10-4    
Post-FEC Bit Error Ratio       1x10-12   1
Control Input Voltage-High   2   Vcc V  
Control Input Voltage-Low   0   0.8 V  
Link Distance with G.652 D 0.002   500 m 2

Notes:

  1. FEC feature is embedded in the
  2. FEC required to be turned on to support maximum transmission

Diagnostics Monitoring AQSFP28-100G-DR1

Parameter Symbol Accuracy Unit Notes
Temperature monitor absolute error DMI_Temp ± 3 °C  
Supply voltage monitor absolute error DMI_VCC ± 0.1 V  
Channel RX power monitor absolute error DMI_RX_Ch ± 2 dB 1
Channel Bias current monitor DMI_Ibias_Ch ± 10% mA  
Channel TX power monitor absolute error DMI_TX_Ch ± 2 dB 1

Note:

  1. Due to measurement accuracy of different single mode fibers, there could be an additional +/-1 dB fluctuation, or a

+/- 3 dB total accuracy.

Optical Characteristics AQSFP28-100G-DR1

Parameter Symbol Min. Typ. Max. Units Note
Center Wavelength λt 1304.5   1317.5 nm  
Transmitter
Side Mode Suppression Ration SMSR 30     dB  
Average Launch Power, each lane PAVG -2.4   4 dBm 1
OMA, each lane POMA -0.8   4.2 dBm 2
Launch Power in OMAouter Minus TDECQ      -2.2       dBm   For ER ≧4.5dB
-1.9     For ER ≦4.5dB
Transmitter and Dispersion eye Closure for PAM4 TDECQ   3.4 dB  
TDECQ-10*log10 (Ceq)     3.4 dB 3
Extinction Ratio ER 3.5   dB  
RIN17.1 OMA RIN   -136 dB/Hz  
Optical Return Loss Tolerance TOL   15.5 dB  
Transmitter Reflectance RT   -26 dB  
Transmitter Transition Time     17 ps  
Average Launch Power OFF     Poff                             -15   dBm  
LOS Assert Level                                              LOSA 50   mV 4
LOS De-assert Level                                             LOSD 100   mV  
Receiver
Damage Threshold Λr 5     dBm 5
Average Receiver Powe   -5.9   4 dBm 6
Receiver Power (OMA)       4.2 dBm  
Receiver Sensitivity (OMA) SEN     Equation (1) dBm 7
Stressed Receiver Sensitivity (OMA) SRS     -1.9 dBm 8
Receiver Reflectance RR     -26 dB  
LOS Assert LOSA -15     dBm 9
LOS De-assert LOSD     -8.9 dBm  
LOS Hysteresis   LOSH 0.5   dB
Conditions of Stress Receiver Sensitivity Test (Note 10)
Stressed Eye Closure for PAM4 (SECQ)                                                          3.4   dB
SECQ-10*log10 (Ceq) 3.4 dB

Notes:

  1. Average launch power (min) is informative and not the principal indicator of sign A transmitter with launch power below this value cannot be compliant; however, a value above this does not ensure compliance.
  2. Even if the TDECQ < 4dB fo ran extinction ratio of ≧5dB or TDECQ < 1.1dB for an extinction ratio of < 5dB, the

OMAouter (min), must exceed the minimum value specified here.

  1. Ceq is a coefficient defined in IEEE Std 3-2018 clause 121.8.5.3 which accounts for reference equalizer noise enhancement.
  2. Average receive power (min) is informative and not the principal indicator of signal A received power below this value cannot be compliant; however, a value above this does not ensure compliance.
  3. The receiver shall be able to tolerate, without damage, continuous exposure to a modulated optical input signal having this power level on one The receiver does not have to operate correctly at this input power.
  4. Receiver sensitivity (OMAouter) (max) is informative and is defined for a transmitter with a value of SECQ up to 4dB. It should meet Equation (1), which is illustrated in Figure 4.

RS = max (-3.9, SECQ – 5.3) dBm

Where: RS               is the receiver sensitivity.

SECQ          is the SECQ of the transmitter used to measure the receiver sensitivity.

  1. Measured with conformance test signal at TP3 for the BER equal to 4×10-4.
  2. These test conditions are for measuring stressed receiver They are not characteristics of the receiver.

Electronical Characteristics AQSFP28-100G-DR1

Parameter      Symbol Min. Typ. Max.  Units Note
Power Consumption       4.0 W  
Supply Current          Icc     1.21 A  
Transmitter (each Lane)
Overload Differential Voltage pk-pk TP1a 900   mV  
Common Mode Voltage (Vcm) TP1 -350 2850 mV 1
Differential Termination Resistance Mismatch   TP1     10   %   At 1MHz
Differential Return Loss (SDD11) TP1 See CEI-28G-VSR Equation 13-19 dB
Common Mode to Differential conversion and Differential to Common Mode conversion (SDC11, SCD11)     TP1   See CEI-28G-VSR Equation 13-20     dB
Stressed Input Test   TP1a See CEI- 28G-VSR Section 3.11.2.1
Receiver (each Lane)
Differential Voltage pk-pk TP4   900 mV  
Common Mode Voltage (Vcm) TP4 -350 2850 mV 1
Common Mode Noise, RMS TP4   17.5 mV  
Differential Termination Resistance Mismatch   TP4     10   %   At 1MHz
Differential Return Loss (SDD22) TP4 See CEI-28G- VSR Equation 13-19 dB
Common Mode to Differential conversion and Differential to Common Mode conversion (SDC22, SCD22)     TP4   See CEI-28G- VSR Equation 13-21   dB
Common Mode Return Loss (SCC22) TP4   -2 dB 2
Transition Time, 20 to 80% TP4 9.5 ps
Vertical Eye Closure (VEC) TP4 5.5 dB
Eye Width at 10-15 probability (EW15)   TP4   0.57   UI
Eye Height at 10-15 probability (EH15)   TP4   228   mV

Note:

  1. Vcm is generated by the Specification includes effects of ground offset voltage.
  2. From 250MHz to

Pin Descriptions AQSFP28-100G-DR1

Pin Symbol Name/Description Notes
1 GND Transmitter Ground 1
2 Tx2n Transmitter Inverted Data Input  
3 Tx2p Transmitter Non-Inverted Data output  
4 GND Transmitter Ground 1
5 Tx4n Transmitter Inverted Data Input  
6 Tx4p Transmitter Non-Inverted Data output  
7 GND Transmitter Ground 1
8 ModSelL Module Select  
9 ResetL Module Reset  
10 VccRx 3.3V Power Supply Receiver 2
11 SCL 2-Wire serial Interface Clock  
12 SDA 2-Wire serial Interface Data  
13 GND Receiver Ground 1
14 Rx3p Receiver Non-Inverted Data Output  
15 Rx3n Receiver Inverted Data Output  
16 GND Receiver Ground 1
17 Rx1p Receiver Non-Inverted Data Output  
18 Rx1n Receiver Inverted Data Output  
19 GND Receiver Ground 1
20 GND Receiver Ground 1
21 Rx2n Receiver Inverted Data Output  
22 Rx2p Receiver Non-Inverted Data Output  
23 GND Receiver Ground 1
24 Rx4n Receiver Inverted Data Output  
25 Rx4p Receiver Non-Inverted Data Output  
26 GND Receiver Ground 1
27 ModPrsl Module Present  
28 IntL Interrupt  
     
29 VccTx 3.3V power supply transmitter 2
30 Vcc1 3.3V power supply 2
31 LPMode Low Power Mode，not connect  
32 GND Transmitter Ground 1
33 Tx3p Transmitter Non-Inverted Data Input  
34 Tx3n Transmitter Inverted Data Output  
35 GND Transmitter Ground 1
36 Tx1p Transmitter Non-Inverted Data Input  
37 Tx1n Transmitter Inverted Data Output  
38 GND Transmitter Ground 1

Notes:

  1. GND is the symbol for signal and supply (power) common for the QSFP28 module. All are common within the module and all module voltages are referenced to this potential unless otherwise Connect these directly to the host board signal common ground plane.
  2. VccRx, Vcc1 and VccTx are the receiving and transmission power suppliers and shall be applied concurrently. Recommended host board power supply filtering is shown in Figure 3 below. Vcc Rx, Vcc1 and Vcc Tx may be internally connected within the QSFP28 transceiver module in any The connector pins are each rated for a maximum current of 1000mA.

Ordering Information AQSFP28-100G-DR1

  Model Number   Part Number  Voltage Temperature
AQSFP28-100G-DR1 OPCW-S40-13-CR 3.3V 0°C to 70 °C
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