Alpha Bridge AB-QSFP28-40T Datasheet

Features

  • QSFP28 MSA package with simplex LC connector
  • Compliant to 100G Lamda MSA 100G-ER1 Optical Specifications
  • Lane signaling rate 53.125GBd with PAM4
  • High speed I/O electrical interface
  • Two Wire Serial Interface with Digital Diagnostic Monitoring
  • Operating case temperature range: 0°C to +70°C
  • Support KP4 FEC inside the module and KP4 FEC shutdown
  • Reaches up to 40km on SMF
  • Maximum power consumption 4.5W
  • 3V power supply voltage
  • compliant to RoHS2.0
  • Class 1 Laser

Applications

  • 100 Gigabit Ethernet
  • Data Center

Absolute Maximum Ratings

Parameter Symbol Conditions Min. Max. Unit
Storage temperature (case) Tstg - -40 +85 ℃
Relative Humidity RH Non Condensing 5 85 %
Supply voltage VCC   0 3.6 V
Low speed signal voltage range     -0.3 4.0 V
Damage threshold Pin Average   5.5 dBm
ESD Sensitivity   —   ±500V for RF ±2kV for others V

Recommended Operating Conditions

Parameter Symbol Min. Typical Max. Unit
Operating Case Temperature Tcase 0 - 70 ºC
Supply Voltage VCC 3.135 3.3 3.465 V
Relative Humidity RH 5 - 85 %
Power Dissipation PD - - 4.5 W
Data Rate (Optical) DRO - 103.125 106.25 Gbps
Data Rate (Electrical) DRE - 26.5625 - Gbps
Operating Link Distance LD - - 40 Km

Optical Characteristics

Parameter Symbol Condition Min. Typ. Max. Unit Note
Transmitter
Data Rate       103.125 106.25 Gbps  
Data rate variation     -100   +100 ppm  
Lane center wavelength     1304.06 1304.58 1305.1 nm  
1308.61 1309.14 1309.66 nm  
Launch power per lane Peach   1.5   7.1 dBm 1, 2
Optical modulation amplitude per lane       POMA For TDECQ <1.4dB   4.5     7.9 dBm  
For 1.4dB< TDECQ   3.1+ TDECQ     7.9
Transmitter and Dispersion eye closure   TDECQ         3.9   dBm  
Optical Extinction Ratio   ER   5     dB  
Side mode Suppression ratio SMSR   30     dB  
Launch power    of OFF Transmitter per lane           -30   dBm  
Relative Intensity Noise RIN       -136 dB/Hz  
Optical return     loss tolerance         15.6 dB  
Transmitter reflectance         -26 dB 4
Receiver
Data Rate       103.125 106.25 Gbps  
Data rate variation     -100   +100 Ppm  
Lane center wavelength     1308.61 1309.14 1309.66 nm  
  1304.06 1304.58 1305.1 nm
Damage threshold Rdam   -2.4     dBm 5
Average receiver power Rpow   -16.2   -3.4 dBm 6
Receiver Power (OMA) per lane Rovl       -2.6 dBm  

Electrical Specifications

Transmitter (Module Input)
Parameter Symbol Min. Typical Max. Unit
Input Differential Impedance Rin - 100 - Ohm
Differential termination mismatch (max) Dmismatch - - 10 %
Differential Data Input Amplitude VIN, P-P - - 900 mVpp
LP Mode, Reset and ModSelL VIL -0.3 - 0.8 V
VIH 2.0 - VCC+0.3 V
Receiver (Module Output)
Output Differential Impedance Rout - 100 - Ohm
Differential termination mismatch (max) Dmismatch - - 10 %
Differential Data Output Amplitude VOUT, P-P - - 900 mVpp
ModPrsL and IntL VOL 0 - 0.4 V
VOH VCC-0.5 - VCC+0.3 V

Pin Descriptions

Pin no. Logic Symbol Description Note
1   GND Ground 1
2 CML-I Tx2n Transmitter Inverted Data Input  
3 CML-I Tx2p Transmitter Non-Inverted Data Input  
4   GND Ground 1
5 CML-I Tx4n Transmitter Inverted Data Input  
6 CML-I Tx4p Transmitter Non-Inverted Data Input  
7   GND Ground 1
8 LVTLL-I ModSelL Module Select 3
9 LVTLL-I ResetL Module Reset 4
10   VccRx +3.3V Power Supply Receiver 2
11 LVCMOS-I/O SCL 2-Wire Serial Interface Clock 3
12 LVCMOS-I/O SDA 2-Wire Serial Interface Data 3
13   GND Ground 1
14 CML-O Rx3p Receiver Non-Inverted Data Output  
15 CML-O Rx3n Receiver Inverted Data Output  
16   GND Ground 1
17 CML-O Rx1p Receiver Non-Inverted Data Output  
18 CML-O Rx1n Receiver Inverted Data Output  
19   GND Ground 1
20   GND Ground 1
21 CML-O Rx2n Receiver Inverted Data Output  
22 CML-O Rx2p Receiver Non-Inverted Data Output  
23   GND Ground 1
24 CML-O Rx4n Receiver Inverted Data Output  
25 CML-O Rx4p Receiver Non-Inverted Data Output  
26   GND Ground 1
27 LVTTL-O ModPrsL Module Present  
28 LVTTL-O IntL/RX_LOS Interrupt/Rx LOS 5
29   VccTx +3.3 V Power Supply transmitter 2
30   Vcc1 +3.3 V Power Supply 2
31 LVTTL-I LPMode/Tx_DIS Low Power mode/Tx Disable 5
32   GND Ground 1
33 CML-I Tx3p Transmitter Non-Inverted Data Input  
34 CML-I Tx3n Transmitter Inverted Data Input  
35   GND Ground 1
36 CML-I Tx1p Transmitter Non-Inverted Data Input  
37 CML-I Tx1n Transmitter Inverted Data Input  
38   GND Ground 1

Ordering Information

Part Number Product Description
AB-QSFP28-40T QSFP28 100G BiDi ER1, QSFP28 100G BiDi ER1, Tx1304nm/Rx1309nm, SMF, Simplex LC, 0°C to +70°C
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