Alpha Bridge SFP ASFP-10G-eLR27B-1

Product Features

  • Complaint with IEEE 3ae 10GBASE-LR
  • Simplex LC connector
  • Electrical interface compliant to SFF-8431 specifications for enhanced 8.5 and 10 Gigabit small form factor pluggable module “SFP+”
  • 1270/1330nm DFB transmitter, PIN photo-detector
  • Compliant with SFF8472 Digital Diagnostic Standard
  • 2-wire interface for management specifications compliant with SFF 8472 digital diagnostic
  • ROHS compliant
  • DOM enabled

Applications

  • Data Center Interconnect
  • CPRI/OBASI Wireless Backhaul
  • LTE eNode B Interconnect

Absolute Maximum Ratings ASFPP-10G-eLR27B

Parameter Symbol Min. Max. Units Note
Storage Temperature Tc -40 85 °C  
Supply Voltage Vcc 0 3.6 V  
Relative Humidity RH 5 95 %  
RX Input Average Power Pmax --- 1.5 dBm

Recommended Operating Conditions ASFPP-10G-eLR27B

Parameter Symbol Min. Max. Units Notes
Case Operating Temperature Tc 0 70 °C
Supply Voltage Vcc 3.135 3.465 V
Supply Current ICC -- 300 mA

Diagnostics ASFPP-10G-eLR27B

Parameter Accuracy Unit Calibration
Temperature ± 3 oC  
Voltage ± 0.08 V  
Bias Current ± 10% mA Internal
TX Power ± 3 dB dBm  
RX Power ± 3 dB dBm  

Transmitter Electro-optical Characteristics ASFP-10G-eLR27B-1

Parameter Symbol Min. Typ. Max. Units Note
Data Rate   --- 10.3125 --- Gbps  
Output Optical Power Pout -5.2 --- 0.5 dBm Average
Center Wavelength °C 1265 --- 1275 nm  
Side mode Suppression Ratio SSRmin 30     dB  
Relative Intensity Noise RIN --- --- -128 dB/Hz 12dB reflection
Max. Pout TX-DISABLE Asserted   POFF   ---   ---   -30   dBm  
Extinction Ratio ER 3.5 --- --- dB  
Transmitter Dispersion Penalty TDP --- --- 3.2 dB  
Optical Return Loss Tolerance   --- --- 12 dB  
Power consumption   --- 800 1000 mW  
Single Ended Output Voltage Tolerance     -0.3   ---   4   V  
Differential Input Voltage VI 180 --- 700 mV  
Commonmode voltage tolerance   15 --- --- mV  
TX Fault VoL -0.3   0.4 V At 0.7mA
Data Dependent Input Jitter DDJ     0.1 UI  
Data Input Total Jitter TJ     0.28 UI  

Note 1: Average optical power shall be measured using the methods specified in TIA/EIA-455-95.

Receiver Electro-optical Characteristics ASFP-10G-eLR27B-1

Parameter Symbol Min. Type Max. Units Note
Receiver Sensitivity PIN -12 --- -- dBm  
Operating Center Wavelength °C 1325 --- 1335 nm  
Overload PIN --- --- 0.5 dB  
Receiver Reflectance   --- --- -12    
Vertical eye closure penalty   2.2     dB Note 1
Loss of Signal-Assert PD -30 --- --- dBm  
Loss of Signal-Deasserted PD --- --- -12 dBm  
Loss of Signal-Hysteresis PH 0.5 --- ---    
Stressed eye jitter   0.3     UIP-p BER < 10-12
Receive electrical 3dB upper cutoff frequency         12.3   GHz  
Receiver power       1.5 dBm  
Differential Output Voltage VDIFF 300 --- 850 mV  
Single Ended Output Voltage Tolerance     -0.3   ---   4   V  
Output Rise and Fall time Tr/Tf 30     ps 20% to 80%
Total Jitter TJ     0.7 UI  
Deterministic Jitter DJ     0.42 UI  
Output Rise and Fall time PIN -12 --- -- dBm  
Total Jitter °C 1325 --- 1335 nm  
Deterministic Jitter PIN --- --- 0.5 dB  

Note 1: Average optical power shall be measured using the methods specified in TIA/EIA-455-95.

Note 2: Receiver sensitivity is informative. Stressed receiver sensitivity shall be measured with conformance test signal for BER =1x 10-12 .

Note 3: Vertical eye closure penalty and stressed eye jitter are the test conditions for measuring stressed receiver sensitivity. They are not the required characteristic of the receiver.

Block Diagram of Transceiver

  • This 10Gigabit SFP+ BiDi transceiver is designed to transmit and receive optical data over single mode optical fiber for link length 20km.The SFP+BiDi 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 150mm of standard FR4 with one connector.

  • The transmitter converts 10Gbit/s serial PECL or CML electrical data into serial optical data compliant with the 10GBASE-LR standard.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 (Tx_Fault) 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 the Vcc_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.

Pin Descriptions ASFP-10G-eLR27B-1

PIN Logic Symbol Name/Description Note
1   VeeT Module Transmitter Ground 1
2 LVTTL-O TX_Fault Module Transmitter Fault  
3 LVTTL-I TX_Dis Transmitter Disable; Turns off transmitter laser output  
4 LVTTL-I/O SDA 2-Wire Serial Interface Data Line 2
5 LVTTL-I SCL 2-Wire Serial Interface Clock 2
6   MOD_DEF0 Module Definition, Grounded in the module  
7 LVTTL-I RS0 Not used  
8 LVTTL-O RX_LOS Receiver Loss of Signal Indication Active High  
9 LVTTL-I RS1 Not used  
10   VeeR Module Receiver Ground 1
11   VeeR Module Receiver Ground 1
12 CML-O RD- Receiver Inverted Data Output  
13 CML-O RD+ Receiver Data Output  
14   VeeR Module Receiver Ground 1
15   VccR Module Receiver 3.3 V Supply  
16   VccT Module Receiver 3.3 V Supply  
17   VeeT Module Transmitter Ground 1
18 CML-I TD+ Transmitter Non-Inverted Data Input  
19 CML-I TD- Transmitter Inverted Data Input  
20   VeeT Module Transmitter Ground 1

NOTES:

  1. Module ground pins GND are isolated from the module case.
  2. Shall be pulled up with 7K-10Kohms to a voltage between 3.15V and 3.45V on the host board.

Optical Receptacle Cleaning Recommendations:

All fiber stubs inside the receptacles portions were cleaned before shipment. In the event of contamination of the optical ports, the recommended cleaning process is the use of forced nitrogen. If contamination is thought to have remained, the opticals ports can be cleaned using a NTT international Cletop stick type and HFE7100 cleaning fluid. Before mating of patching-cord, the fiber cord should be cleaned  up by using Cletop cleaning cassette.

Ordering Information ASFP-10G-eLR27B-1

Model Number Part Number Reach Input/Output TX/RX Signal Detect Voltage Temperature
ASFP-10GeLR27B-I OPAK-W20-27-CB 20 km AC/AC 1270/1330 TTL 3.3V 0°C to 70 °C
ASFP-10GeLR27B-I OPAK-W20-27-IB 20 km AC/AC 1270/1330 TTL 3.3V -40°C to 85 °C
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