Alpha Bridge AQSFP-DD-DR4

Features

  • QSFP-DD MSA compliant
  • Parallel 4 Optical Lanes
  • IEEE 3bs 400GBASE-DR4 Specification compliant
  • Up to 500m transmission on single mode fiber (SMF) with FEC
  • 125Gb/s electrical interface (400GAUI-8)
  • Data Rate 25Gbps (PAM4) per channel
  • Maximum power consumption 5W
  • MPO-12 connector
  • Operating case temperature: 0°C~70°C
  • RoHS

Applications

  • 400G Ethernet
  • Infini interconnects
  • Datacenter Enterprise networking

Description

This product is a 400Gb/s Quad Small Form Factor Pluggable-double density (QSFP-DD) optical module designed for 500m optical communication applications. The module converts 8 channels of 50Gb/s (PAM4) electrical input data to 4 channels of parallel optical signals, each capable of 100Gb/s operation for an aggregate data rate of 400Gb/s. Reversely, on the receiver side, the module converts 4 channels of parallel optical signals of 100Gb/s each channel for an aggregate data rage of 400Gb/s into 8 channels of 50Gb/s (PAM4) electrical output data.

An optical fiber cable with an MTP/MPO-12 connector can be plugged into the QSFP-DD DR4 module receptacle. Proper alignment is ensured by the guide pins inside the receptacle. The cable usually cannot be twisted for proper channel to channel alignment. Electrical connection is achieved through a QSFP-DD MSA-compliant edge type connector.

The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP-DD Multi-Source Agreement (MSA) Type 2. It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.

Absolute Maximum Ratings

Parameter Symbol Min. Max. Units Note
Storage Temperature Tst -40 85 °C  
Supply Voltage Vcc -0.5 3.6 V  
Case Operating Temperature Top 0 70 °C  
Humidity (non-condensing) Rh 0 85 %  
Damage Threshold, each Lane THd 5   dBm  

Recommended Operating Conditions

Parameter Symbol Min. Typ. Max. Units
Operating Case Temperature Tca 0   70 °C
Supply Voltage Vcc 3.135 3.3 3.465 V
Data Rate, each Lane fd   26.5625   GBd
Data Rage Accuracy   -100   100 ppm
Pre-FEC Bit Error Ration       2.4x10-4  
Post-FEC Bit Error Ration       1x10-12  
Link Distance D 2   500 M

Diagnostic Monitoring Interface

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

Optical Characteristics

Parameter Symbol Min. Typ. Max. Units Note
Center Wavelength λc 1304.5 1310 1317.5 nm  
Transmitter
Data Rate, each Lane   53.125 ± 100ppm     GBd  
Modulation Format     PAM4      
Side-mode Suppression Ratio SMSR 30     dB  
Average Launch Power, each Lane PAVG -2.9   4 dBm 1
Optical Modulation Amplitude            
(OMAouter), each Lane POMA -0.8   4.2 dBm 2
Launch Power in OMAouter minus   -2.2     dB For ER≧5dB
TDECQ, each Lane   -1.9     dB For ER≦5dB
Transmitter and Dispersion Eye Closure            
for PAM4, each Lane TDECQ     3.4 dB  
Extinction Ratio ER 3.5     dB  
RIN21.4 OMA RIN     -136 dB/Hz  
Optical Return Loss Tolerance TOL     21.4 dB  
Transmitter Reflectance TR     -26 dB  
Transmitter Transition Time       17 ps  
Average Launch Power of OFF            
Transmitter, each Lane Poff     -15 dBm  
Receiver
Damage Threshold, each Lane THd 5     dBm 4
Average receiver Power, each Lane   -5.9   4 dBm 5
Receiver Power (OMAouter), each Lane       4.2 dBm  
Receiver Sensitivity (OMAouter), each     Equation      
Lane SEN   -1   dBm 6
Stressed Receiver Sensitivity in OMA            
outer, each Lane SRS     -1.9 dBm 7
Receiver Reflectance RR     -26 dB  
LOS Assert LOSA -15     dBm  
LOS De-assert LOSD     -8.9 dBm  
LOS Hysteresis            
Stressed Conditions for Stress Receiver Sensitivity (Note 8)
Stressed Eye Closure for PAM4            
(SECQ), Lane under Test     3.4   dB  
SECQ-10*log10(Ceq), Lane under Test       3.4 dB  
OMAouter of each Aggressor Lane     4.2   dBm  

Electronical Characteristics

Parameter Symbol Min. Typ. Max. Units Note
Power Consumption       10.5 W  
Supply Current     Icc 3.18 A  
Transmitter (each Lane)
Signaling Rate, each Lane TP1  26.5625 ± 100 ppm GBd
Differential pk-pk Input voltage Tolerance TP1a 900     mVpp 1
Differential Termination Mismatch TP1     10 %  
Differential Input Return Loss TP1 IEEE 802.3-  2015 Equation(83E-5) Db
Differential to Common Mode Input Return Loss TP1 IEEE 802.3- 2015 Equation (83E-6) Db
Module Stressed Input Test TP1a See IEEE 802.3bs 120E.3.4.1   2
Single-ended Voltage Tolerance Range (Min) TP1a -0.4 to 3.3     V  
DC Common Mode Input Voltage TP1 -350   2850 mV 3
Receiver (each Lane) 
Differential Peak to Peak output voltage TP4   900   mVpp  
AC Common Mode Output Voltage, RMS TP4   17.5   mV  
Differential Termination Mismatch TP4   10   %  
Differential Output Return Loss TP4 IEEE 802.3- 2015 Equation (83E-2)  
Common to Differential Mode Conversion Return TP4 IEEE 802.3-2015 Equation (83E-3)  
Transition Time, 20% to 80% TP4 9.5     Ps  
Near-end Eye Symmetry Mask Width (ESMW) TP4   0.265   UI  
Near-end Eye Height, Differential TP4 70     mV  
Far-end Eye Symmetry Mask Width (ESMW) TP4   0.2   UI  
Far-end Eye Height, Differential TP4 30     mV  
Far-end Pre-cursor ISI Ratio TP4 -4.5   2.5 %  
Common Mode Output Voltage (Vcm) TP4 -350   2850 mV 3

Pin Descriptions

PIN Logic Symbol Name / Description Note
1   GND Ground  
2 CML-I Tx2n Transmitter inverted data input  
3 CML-I Tx2p Transmitter non-inverted data input  
4   GND Ground  
5 CML-I Tx4n Transmitter inverted data input  
6 CML-I Tx4p Transmitter non-inverted data input  
7   GND Ground  
8 LVTTL-I MoDSeIL Module Select  
9 LVTTL-I ResetL Module Reset  
10   VccRx +3.3v Receiver Power Supply  
11 LVCMOS-I/O SCL 2-wire Serial interface clock  
12 LVCMOS-I/O SDA 2-wire Serial interface data  
13   GND Ground  
14 CML-O RX3p Receiver non-inverted Data Output  
15 CML-O RX3n Receiver inverted Data Output  
16   GND Ground  
17 CML-O Rx1p Receiver non-inverted Data Output  
18 CML-O Rx1n Receiver inverted Data Output  
19   GND Ground  
20   GND Ground  
21 CML-O Rx2n Receiver Inverted Data Output  
22 CML-O Rx2p Receiver Non-Inverted Data Output  
23   GND Ground  
24 CML-O Rx4n Receiver Inverted Data Output  
25 CML-O Rx4p Receiver Non-Inverted Data Output  
26   GND Ground  
27 LVTTL-O ModPrsL Module Present  
28 LVTTL-O IntL Interrupt  
29   VccTx +3.3v Power supply transmitter  
30   Vcc1 +3.3v Power supply
31 LVTTL-I LPMode Low Power Mode
32   GND Ground
33 CML-I Tx3p Transmitter Non-Inverted Data Input
34 CML-I Tx3n Transmitter Inverted Data Input
35   GND Ground
36 CML-I Tx1p Transmitter Non-Inverted Data Input
37 CML-I Tx1n Transmitter Inverted Data Input
38   GND Ground
39   GND Ground
40 CML-I Tx6n Transmitter Inverted Data Input
41 CML-I Tx6p Transmitter Non-Inverted Data Input
42   GND Ground
43 CML-I Tx8n Transmitter Inverted Data Input
44 CML-I Tx8p Transmitter Non-Inverted Data Input
45   GND Ground
46   Reserved For future use
47   VS1 Module Vendor Specific 1
48   VccRx1 3.3V Power Supply
49   VS2 Module Vendor Specific 2
50   VS3 Module Vendor Specific 3
51   GND Ground
52 CML-O Rx7p- Receiver Non-Inverted Data Output
53 CML-O Rx7n Receiver Inverted Data Output
54   GND Ground
55 CML-O Rx5p- Receiver Non-Inverted Data Output
56 CML-O Rx5n Receiver Inverted Data Output
57   GND Ground
58   GND Ground
59 CML-O Rx6n- Receiver Inverted Data Output
60 CML-O Rx6p Receiver Non-Inverted Data Output
61   GND Ground
62 CML-O Rx8n Receiver Inverted Data Output
63 CML-O Rx8p Receiver Non-Inverted Data Output
64   GND Ground
65   NC No connect
66   Reserved For future use
67   VccTx1 3.3V Power Supply
68   Vcc2 3.3V Power Supply
69   Reserved For Future Use
70   GND Ground
71 CML-I Tx7p Transmitter Non-Inverted Data Input
72 CML-I Tx7n Transmitter Inverted Data Input
73   GND Ground
74 CML-I Tx5p Transmitter Non-Inverted Data Input
75 CML-I Tx5n Transmitter Inverted Data Input
76   GND Ground

Ordering Information

Model Number Part Number Reach Wavelength Temperature
QSFP-DD 400G DR4 OPDY-SX5-13-CB 500m 1310nm 0°C to 70°C
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