25Gbps 100m Duplex LC PSP28-8501M Primus IT Limited Features 25Gbps 100m Duplex LC SFP28 Transceiver PSP28-8501M Supports 24.3Gbps to 28.1Gbps bit rates 850nm VCSEL Laser and PIN photo-detector Up to 70m on 50/125m MMF(OM3) Up to 100m on 50/125m MMF(OM4) Duplex LC receptacle optical interface compliant Hot pluggable All-metal housing for superior EMI performance RoHS6 compliant (lead free) Operating case temperature: Commercial: -5C to +70C Applications 25G SR 100G SR4 fan out to 4x25GE SR eCPRI Standards Compliant with INF-8431 Compliant with SFF-8472 Compatible with IEEE802.3by Description The SFP28 transceivers are designed for use in 25-Gigabit data rate over multimode fiber. The transceivers are compatible with INF-8431 and SFF-8472. For further information, please refer to INF-8431 and SFF-8472. Page 1 25Gbps 100m Duplex LC PSP28-8501M Primus IT Limited Module Block Diagram Absolute Maximum Ratings Parameter Symbol Min. Power Supply Voltage VCC Storage Temperature Typical Max. Unit 0 3.6 V Ts -40 +85 C Relative Humidity RH 0 85 % RX Input Average Power Pmax - 3 dBm Symbol Min. Typical Max. Unit Power Supply Voltage VCC 3.13 3.3 3.46 V Power Supply Current ICC 290 mA Operating Case Temperature TC +70 C Recommended Operating Environment Parameter Data Rate -5 25.78 Page 2 Gbps 25Gbps 100m Duplex LC PSP28-8501M Primus IT Limited Electrical Characteristics Parameter Symbol Min. Typical Max. Unit Note Input Differential Impedance Rin 90 100 110 Differential Data Input Swing Vin PP 200 900 mV Transmit Disable Voltage VD Vcc - 1.3 Vcc V Transmit Enable Voltage VEN Vee Vee+ 0.8 V Differential Data Output Swing Vout PP 400 900 mV LOS Fault Vlos fault Vcc - 0.5 Vcc_host V 2 LOS Normal Vlos norm Vee Vee+0.5 V 2 Transmitter Section 1 Receiver Section Notes: 1. Connected directly to TX data input pins. AC coupling from pins into laser driver IC. 2. LOS is an open collector output. Should be pulled up with 4.7k - 10k on the host board. Normal operation is logic 0; loss of signal is logic 1. Optical Parameters Parameter Symbol Min. Typical Max. Unit Centre Wavelength c 840 - 860 nm Spectral Width (RMS) 0.6 nm +2.4 dBm Note Transmitter Section Average Optical Power (avg.) Pout -6.7 Laser Off Power Poff - - -30 dBm Extinction Ratio ER 2 - - dB Relative Intensity Noise RIN - - -130 dB/Hz - - 12 dB 3.13 dB Optical Return Loss Tolerance Vertical Eye Closure Penalty CEVPQ Output Optical Eye Compliant with IEEE802.3by eye masks when filtered 1 2 2 Receiver Section Receiver Center Wavelength c 840 860 nm Sen -10 2 dBm Los Assert LOSA -26 - - dBm Los Dessert LOSD - - -13 dBm Los Hysteresis LOSH 0.5 - 5 dB Overload Pin-max - - 2 dBm Receiver Reflectance - - -12 dB Receiver Power (damage) - - 3 dBm Receiver Sensitivity (OMA) Page 3 - 3 3 25Gbps 100m Duplex LC PSP28-8501M Primus IT Limited Notes: 1. The optical power is launched into 50/125m MMF. 31 2. Measured with a PRBS 2 -1 test pattern @25.78Gbps. 31 -5 3. Measured with a PRBS 2 -1 test pattern @25.78bps, ER=4.8dB, BER <10 . Timing Characteristics Parameter TX_Disable Assert Time TX_Disable Negate Time Time to Initialize Tx_Fault Assert Tx_Fault Reset Rx_LOS Assert Delay Rx_LOS Negate Delay Clock Frequency Symbol t_off t_on t_start_up t_fault_on t_reset t_los_on t_los_off fSCL Min. Typical Max. 100 2 300 1 Unit us ms ms ms us us us kHz 10 100 100 400 0 Digital Diagnostic Monitor Characteristics (DDM) The following digital diagnostic characteristics are defined over the Recommended Operating Environment unless otherwise specified. It is compliant to SFF8472 Rev10.2 with internal calibration mode. For external calibration mode please contact our sales stuff. Parameter Symbol Min. Max. Unit Temperature Monitor Absolute Error DMI_Temp -3 3 C Laser Power Monitor Absolute Error DMI_TX -3 3 dB RX Power Monitor Absolute Error DMI_RX -3 3 dB Supply Voltage Monitor Absolute Error DMI_VCC -3% 3% V Bias Current Monitor Absolute Error DMI_Ibias -10% 10% mA Digital Diagnostic Memory Map (Compliant with SFF-8472) The transceivers provide serial ID memory contents and diagnostic information about the present operating conditions by the 2-wire serial interface (SCL, SDA). The diagnostic information with internal calibration or external calibration all are implemented, including received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring. The digital diagnostic memory map specific data field defines as following (For further information, please refer to SFF-8472). Page 4 25Gbps 100m Duplex LC PSP28-8501M Primus IT Limited Pin Definitions Page 5 25Gbps 100m Duplex LC PSP28-8501M Primus IT Limited Pin Descriptions Pin Signal Name Plug Seq. Notes VeeT Description Module Transmitter Ground 1 1 1 2 TX FAULT Module Transmitter Fault 3 3 TX Disable 4 SDA Transmitter Disable; Turns off transmitter laser output 2-Wire Serial Interface Data Line 5 SCL 2-Wire Serial Interface Clock 6 Mod_ABS 7 RS0 8 LOS 9 RS1 Receiver Loss of Signal Indication Active LOW Transmitter Rate Select (not used) VeeR Module Receiver Ground 1 1 VeeR Module Receiver Ground 1 1 RD- Receiver Inverted Data Output 3 RD+ Receiver Non-Inverted Data Output 3 VeeR Module Receiver Ground 1 VccR Module Receiver 3.3 V Supply 2 VccT Module Transmitter 3.3 V Supply 2 VeeT Module Transmitter Ground 1 TD+ Transmitter Non-Inverted Data Input 3 TD- Transmitter Inverted Data Input 3 VeeT Module Transmitter Ground 1 10 11 12 13 14 15 16 17 18 19 20 Module Definition, Grounded in the module Receiver Rate Select (not used) 3 3 2 3 2 3 3 3 3 Notes: Plug Seq.: Pin engagement sequence during hot plugging. 1. Module ground pins GND are isolated from the module case. 2. Shall be pulled up with 4.7K-10Kohms to a voltage between 3.15V and 3.45V on the host board. Recommended Power Interface Circuit Page 6 1 1 1 25Gbps 100m Duplex LC PSP28-8501M Primus IT Limited Recommended Interface Circuit Mechanical Dimensions Page 7 25Gbps 100m Duplex LC PSP28-8501M Primus IT Limited Ordering information Part Number PSP28-8501M Product Description 850nm, 25Gbps, 100m (MMF OM4), Duplex LC SFP28 Transceiver, -5C ~ +70C, With DDM. References 1. "Specifications for Enhanced Small Form Factor Pluggable Module SFP+", SFF-8431, Rev 4.1, July 6, 2009. 2. "Improved Pluggable Form factor", SFF-8432, Rev 4.2, Apr 18, 2007. 3. "Diagnostic Monitoring Interface for Optical Transceivers" SFF-8472, Rev 10.2, June 1, 2007. 4. IEEE802.3by. Important Notice Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by PRIMUS IT before they become applicable to any particular order or contract. In accordance with the PRIMUS IT policy of continuous improvement specifications may change without notice. The publication of information in this data sheet does not imply freedom from patent or other protective rights of PRIMUS IT or others. Further details are available from any PRIMUS IT sales representative. Contact Information PRIMUS IT LIMITED 1HongKongRM M4/F Continental Mansion 300 King's RD HK 2Tel:+86 0755-25924025 3Fax:+86 0755-25924051 4Websitehttp://www.primus-it.com 5Emailsales@primus-it.com Page 8