SFP28 25G 100m
YSP28-8501M
Quantity
Features
Applications
Standards
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.
Module Block Diagram
Absolute Maximum Ratings
Recommended Operating Environment
Electrical Characteristics
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 4.7kΩ – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1.
Optical Parameters
Notes:
1. The optical power is launched into 50/125µm MMF.
2. Measured with a PRBS 231-1 test pattern @25.78Gbps.
3. Measured with a PRBS 231-1 test pattern @25.78bps, ER=4.8dB, BER <10-5.
Timing Characteristics
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.
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 calibrationor 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).
Pin Definitions
Pin Descriptions
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
Recommended Interface Circuit
Mechanical Dimensions
Ordering information
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 YOUTHTON before they become applicable to any particular order or contract. In accordance with the YOUTHTON 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 YOUTHTON or others. Further details are available from any YOUTHTON sales representative.
Contact Information
SHENZHEN YOUTHTON TECHNOLOGY CO., LTD.
ADD: F4, JINMA BUILDING, JINMA INDUSTRIAL PARK, SHIHUAN ROAD NO.4, SHIYAN STREET, BAOAN DISTRICT, SHENZHEN, CHINA
EMAIL: info@youthton.com
- Supports 24.3Gbps to 28.1Gbps bit rates
- 850nm VCSEL Laser and PIN photo-detector
- Up to 70m on 50/125µm MMF(OM3)
- Up to 100m on 50/125µm MMF(OM4)
- Duplex LC receptacle optical interface compliant
- Hot pluggable
- All-metal housing for superior EMI performance
- RoHS6 compliant (lead free)
- Operating case temperature:
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.
Module Block Diagram
Absolute Maximum Ratings
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| Power Supply Voltage | VCC | 0 | 3.6 | V | |
| Storage Temperature | Ts | -40 | +85 | °C | |
| Relative Humidity | RH | 0 | 85 | % | |
| RX Input Average Power | Pmax | - | 3 | dBm |
Recommended Operating Environment
| Parameter | 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 | -5 | +70 | °C | |
| Data Rate | 25.78 | Gbps |
Electrical Characteristics
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section | ||||||
| Input Differential Impedance | Rin | 90 | 100 | 110 | Ω | |
| Differential Data Input Swing | Vin PP | 200 | 900 | mV | 1 | |
| Transmit Disable Voltage | VD | Vcc – 1.3 | Vcc | V | ||
| Transmit Enable Voltage | VEN | Vee | Vee+ 0.8 | V | ||
| Receiver Section | ||||||
| Differential Data Output Swing | VoutPP | 400 | 900 | mV | ||
| LOS Fault | Vlos fault | Vcc– 0.5 | Vcc_host | V | 2 | |
| LOS Normal | Vlos norm | Vee | Vee+0.5 | V | 2 | |
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 4.7kΩ – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1.
Optical Parameters
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section | ||||||
| Centre Wavelength | λc | 840 | - | 860 | nm | |
| Spectral Width (RMS) | σ | 0.6 | nm | |||
| Average Optical Power (avg.) | Pout | -6.7 | +2.4 | dBm | 1 | |
| Laser Off Power | Poff | - | - | -30 | dBm | |
| Extinction Ratio | ER | 2 | - | - | dB | 2 |
| Relative Intensity Noise | RIN | - | - | -130 | dB/Hz | |
| Optical Return Loss Tolerance | - | - | 12 | dB | ||
| Vertical Eye Closure Penalty | CEVPQ | 3.13 | dB | |||
| Output Optical Eye | Compliant with IEEE802.3by eye masks when filtered | 2 | ||||
| Receiver Section | ||||||
| Receiver Center Wavelength | λc | 840 | - | 860 | nm | |
| Receiver in Average Power | -10 | 2 | dBm | |||
| Receiver sensitivity(OMA) | Sen | -10 | dBm | 3 | ||
| Los Assert | LOSA | -26 | - | - | dBm | |
| Los Dessert | LOSD | - | - | -13 | dBm | |
| Los Hysteresis | LOSH | 0.5 | - | 5 | dB | |
| Overload | Pin-max | - | - | 2 | dBm | 3 |
| Receiver Reflectance | - | - | -12 | dB | ||
| Receiver Power (damage) | - | - | 3 | dBm | ||
Notes:
1. The optical power is launched into 50/125µm MMF.
2. Measured with a PRBS 231-1 test pattern @25.78Gbps.
3. Measured with a PRBS 231-1 test pattern @25.78bps, ER=4.8dB, BER <10-5.
Timing Characteristics
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| TX_Disable Assert Time | t_off | 100 | us | ||
| TX_Disable Negate Time | t_on | 2 | ms | ||
| Time to Initialize | t_start_up | 300 | ms | ||
| Tx_Fault Assert | t_fault_on | 1 | ms | ||
| Tx_Fault Reset | t_reset | 10 | us | ||
| Rx_LOS Assert Delay | t_los_on | 100 | us | ||
| Rx_LOS Negate Delay | t_los_off | 100 | us | ||
| Clock Frequency | fSCL | 0 | 400 | kHz |
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 calibrationor 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).
Pin Definitions
Pin Descriptions
| Pin | Signal Name | Description | Plug Seq. | Notes |
| 1 | VeeT | Module Transmitter Ground | 1 | 1 |
| 2 | TX FAULT | Module Transmitter Fault | 3 | |
| 3 | TX Disable | Transmitter Disable; Turns off transmitter laser output | 3 | |
| 4 | SDA | 2-Wire Serial Interface Data Line | 3 | 2 |
| 5 | SCL | 2-Wire Serial Interface Clock | 3 | 2 |
| 6 | Mod_ABS | Module Definition, Grounded in the module | 3 | |
| 7 | RS0 | Receiver Rate Select (not used) | 3 | |
| 8 | LOS | Receiver Loss of Signal Indication Active LOW | 3 | |
| 9 | RS1 | Transmitter Rate Select (not used) | 3 | |
| 10 | VeeR | Module Receiver Ground | 1 | 1 |
| 11 | VeeR | Module Receiver Ground | 1 | 1 |
| 12 | RD- | Receiver Inverted Data Output | 3 | |
| 13 | RD+ | Receiver Non-Inverted Data Output | 3 | |
| 14 | VeeR | Module Receiver Ground | 1 | 1 |
| 15 | VccR | Module Receiver 3.3 V Supply | 2 | |
| 16 | VccT | Module Transmitter 3.3 V Supply | 2 | |
| 17 | VeeT | Module Transmitter Ground | 1 | 1 |
| 18 | TD+ | Transmitter Non-Inverted Data Input | 3 | |
| 19 | TD- | Transmitter Inverted Data Input | 3 | |
| 20 | VeeT | Module Transmitter Ground | 1 | 1 |
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
Recommended Interface Circuit
Mechanical Dimensions
Ordering information
| Part Number | Product Description |
| YSP28-8501M | 850nm, 25Gbps, 100m (MMF OM4), Duplex LC SFP28 Transceiver, -5ºC ~ +70ºC, 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 YOUTHTON before they become applicable to any particular order or contract. In accordance with the YOUTHTON 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 YOUTHTON or others. Further details are available from any YOUTHTON sales representative.
Contact Information
SHENZHEN YOUTHTON TECHNOLOGY CO., LTD.
ADD: F4, JINMA BUILDING, JINMA INDUSTRIAL PARK, SHIHUAN ROAD NO.4, SHIYAN STREET, BAOAN DISTRICT, SHENZHEN, CHINA
EMAIL: info@youthton.com