Alpha Bridge AB-SFP+-10 Datasheet

Features

  • Optical interface compliant to IEEE 802.3ae 10GBASE-LR
  • Electrical interface compliant to SFF-8431
  • Hot Pluggable
  • 1310nm DFB transmitter, PIN photo-detector
  • Operating case temperature: 0 to 70 °C and -40~85°C
  • Low power consumption
  • Applicable for 10km SMF connection
  • All-metal housing for superior EMI performance
  • Advanced firmware allow customer system encryption information to be stored in transceiver
  • Cost effective SFP+ solution, enables higher port densities and greater bandwidth

Applications

  • 10GBASE-LR at 3125Gbps
  • 10GBASE-LW at 953Gbps
  • Other optical links

Product Description

This 1310nm DFB 10Gigabit SFP+ transceiver is designed to transmit and receive optical data over single mode optical fiber for link length 10km.

The SFP+ LR module electrical interface is compliant to SFI electrical specifications. The transmitter input and receiver output impedance is 100 Ohms differential. Data lines are internally AC coupled. The module provides differential termination and reduce differential to common mode conversion for quality signal termination and low EMI. SFI typically operates over 200 mm of improved FR4 material or up to about 150mmof standard FR4 with one connector.

In the transmit direction, the SFP+ transceiver module receives a 10.3125 Gb/s electrical signal (signaling rate) from the host board Asic/SerDes and converts the data to an optical signal via the Laser Driver that controls the Laser diode in the Transmitter Optical Sub-Assembly (TOSA). An open collector compatible Transmit Disable (Tx_Dis) is provided. A logic “1,” or no connection on this pin will disable the laser from transmitting. A logic “0” on this pin provides normal operation. The transmitter has an internal automatic power control loop (APC) to ensure constant optical power output across supply voltage and temperature variations. An open collector compatible Transmit Fault (TFault) is provided. TX_Fault is a module output contact that when high, indicates that the module transmitter has detected a fault condition related to laser operation or safety. The TX_Fault output contact is an open drain/collector and shall be pulled up to theVcc_Host in the host with a resistor in the range 4.7-10 kΩ. TX_Disable is a module input contact. When TX_Disable is asserted high or left open, the SFP+ module transmitter output shall be turned off. This contact shall be pulled up to VccT with a 4.7 kΩ to 10 kΩ resistor.

The receiver converts 10Gbit/s serial optical data into serial PECL/CML electrical data. An open collector compatible Loss of Signal is provided. Rx_LOS when high indicates an optical signal level below that specified in the relevant standard. The Rx_LOS contact is an open drain/collector output and shall be pulled up to Vcc_Host in the host with a resistor in the range 4.7-10 kΩ, or with an active termination. Power supply filtering is recommended for both the transmitter and receiver. The Rx_LOS signal is intended as a preliminary indication to the system in which the SFP+ is installed that the received signal strength is below the specified range. Such an indication typically points to non-installed cables, broken cables, or a disabled, failing or a powered off transmitter at the far end of the cable.


The 3rd functional capability of the SFP+ module is the 2 wire serial, I2C, interface. I2C is used for serial ID, digital diagnostics, and module control functions. The enhanced digital diagnostics monitoring interface allows real time access to the device allowing monitor of received optical power, laser bias current, laser optical output power, etc

Pin definition

Contacts logic Symbol power sequence order Name/Description
1   VeeT 1st Module Transmitter Ground
2 LVTTL-O TX_Fault 3rd Module Transmitter Fault
3 LVTTL-I TX_Disable 3rd Transmiter Disable Turns off transmitter, laser output
4 LVTTL-1/0 SDA 3rd 2-wire Serial Interface Data Line (Same as MOD-DEF2 in the INF-80741)
5 LVTTL-1/0 SCL 3rd 2-wire Serial Interface Clock (Same as MOD-DEFI in the INF-80741)
6   Mod_ABS 3rd Module Absent connected to VeeT or Veek in the module
7 LVTTL-I RSO 3rd Rate Select 0, optionally controls SFP module receiver. When high-input signaling rate 425 GBd and when low input signaling rates 425 GB4
8 LVTTL-O Rx_LOS 3rd Receiver Loss of Signal Indication In FC designated as Rx LOS and in Ethernet designated as Signal Detect)
9 LVT-IL-I  RSI 3rd Rate Selectul, optionally controls SFP+ transmitter. When high-input.sig-naling rates 425 GBd and when low input signaling rate $4.25 GB4.
10   VeeR 1st Module Receiver Ground
11   VeeR 1st Module Receiver Ground
12 CML-O RD- 3rd Receiver, Inverted Data Output
13 CML-O RD+ 3rd Receiver Non-Inverted Data Output
14   VeeR 1st Module Receiver Ground
15   VccR 2nd Module Receiver 3.3 V Supply
16   VccT 2nd Module Transmitter 3.3 V Supply
17   VeeT 1st Module Transmitter Ground
18 CMI-I TD+ 3rd Transmitter Non-Inverted Data Input
19 CML-I TD- 3rd Transmitter Inverted Data, Input
20   VeeT 1st Module Transmitter Ground

Absolute Maximum Ratings

Parameters Symbol Min. Max. Unit
Power Supply Voltage VCC 0 +3.6 V
Storage Temperature Tc -40 +85 ℃
Operating Case Temperature Tc 0/-40 +70/+85 ℃
Relative Humidity RH 5 95 %
RX Input Average Power Pmax - 0 dBm

Recommended operating environment

Parameter Symbol Min. Typical Max Unit
Power Supply Voltage VCC 3.135 3.300 3.465 V

Optical characteristics

  Unit Values
Operating Reach Km 10
Transmit
Center wavelength (range) nm 1260 -1355
Side Mode Suppression Ratio (min) dB 30
Launched power
– maximum dBm +0.5
– minimum dBm -8.2                                     Notes1
- OMA dBm -5.2
- OMA-TDP (min) dBm -6.2
Transmitter and dispersion penalty dB 0                                             Notes4
Average launch power of OFF transmitter (max) dBm -30
Extinction ratio (min) dB 3.5                                         Notes2
RIN12 OMA (max) dB/Hz -128
Optical Return Loss Tolerance (min) dB 12
Receiver
Center wavelength (range) nm 1260-1355
Receive overload (max) in average power1 dBm 0.5
Receive sensitivity (min) in average power1 dBm -14.4                                   Notes3 (10km)
dBm -13.4                                   Notes3 (20km)
Receiver sensitivity (max) in OMA (footnote 2) dBm -12.6                                   Notes3 (10km)
dBm -11.6                                  Notes3 (20km)
Receiver Reflectance (max) dB -12
Stressed receiver sensitivity (max) in OMA2 dBm -10.3
Vertical eye closure penalty (min)3 dB 2.2
Stressed eye jitter (min)2 UIp-p 0.7
Receive electrical 3dB upper cutoff frequency (max) GHz 12.3
Receiver power (damage, Max) dBm 1.5

Electrical characteristics

Parameter Symbol Min. Typical Max Unit Notes
Data Rate   - 10.3125 - Gbps  
Power Consumption   - 1200 1500 mW  
Transmitter
Single Ended Output Voltage Tolerance   -0.3 - 4.0 V  
C common mode voltage tolerance   15 - - mV  
Tx Input Diff Voltage VI 400   1600 mV  
Tx Fault VoL -0.3   0.4 V At 0.7mA
Data Dependent Input Jitter DDJ     0.10 UI  
Data Input Total Jitter TJ     0.28 UI  
Receiver
Single Ended Output Voltage Tolerance   -0.3 - 4.0 V  
Rx Output Diff Voltage Vo 300   850 mV  
Rx Output Rise and Fall Time Tr/Tf 30     ps 20% to 80%
Total Jitter TJ     0.70 UI  
Deterministic Jitter DJ     0.42 UI  

Control and status I/O timing characteristics

Parameter Symbol min max unit Conditions
TX Disable assert time t_off   100 us  rising edge of TX_Disable to full of output signal below 10% of nominal
TX Disable negate time t_on   2 ms Falling edge of Tx Disable to rise of output signal above 90% of nominal, This only applies In-normal,operation not during startup or full recovery
"Time to initialize 2-wire Interface t_2w_start_up   300 ms From power on or hot plug after the supply meeting Table 8.
Time to initialize t_start_up   300 ms From-power supplies meeting Table 8 or hot plug or Tx disable negated during power up or Tx Fault recovery, until-non-cooled power level II part for non-cooled power power-level t for Tx Fault-recovery) is fully operational
Time todnitialize cooled-module t_start_up_cooled   90 s From power supplies meeting Table 8 or hot plug. or Tx disable negated during power up or by Fault recovery, until cooled power level part for cooled power level: part during fault operational recovery) is fully Operational
Timeto Power Upto level 1power level2   300 ms From falling edge of stop bit enabling power level II until non-cooled module is fully operational
Time to Power Down from Level II t_power_down   300 ms From falling edge of stop bit disabling power-level II until module is within power-level requirements
TX_Fault assert TX_Fault_on   1 ms From the occurrence of fault-to assertion of Tx_Fault
TX Fault assed for cooled module TX Fault_on.comled   50 ms From the occurrence of fault-to assertion of Tx_Fault
TX Fault Reset t_reset 10 us Time Tx_Disable must be held high to reset Tx_Fault
RSL,RSI rate select timing for FC t_Rso_FC,RSI_FC   500 us From assertion till stable output
RSO, RSI rate select timing non FC T_Rso, t_RSI   10 ms From assertion till stable output
Rx_LOS assert delay t_los_on   100 ms From occurrence of loss of signal to assertion of Rx_LOS
Rx_LOS negate delay t_los_off   100 ms From occurrence of presence of signal to negation of Rx_Los

Ordering Information

Part Number Product Description
AB-SFP+-10 10Gbps 1310nm 10km LC SFP+ Transceiver 0~70℃
AB-SFP+-10-I 10Gbps 1310nm 10km LC SFP+ Transceiver -40~85℃
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