
Description
This product is a 32G FC SFP28 transceiver designed for optical communication compliant with 25GE and 32G FC standard. Its high performance cooled EML transmitter and high sensitivity APD receiver provide superior performance for 25GE and 32G FC application up to 40km (with FEC) Links.
The product is designed with SFP28 form factor, which is the optical/electrical connection according to the SFP+ Multi-Source Agreement (MSA).
Features
● Hot-pluggable SFP28 form factor
● Supports 24.33/25.78Gb/s aggregate bit rate
● Supports 28.05Gb/s aggregate bit rate
● Transmitter: cooled 25Gb/sEML TOSA
● Receiver: 25Gb/s APD ROSA
● Internal CDR circuits on both receiver and transmitter channels
● 1.8W maximum power dissipation
● Maximum link length of 40Km over SMF
● Duplex LC receptacle
● Single 3.3V power supply
● RoHS compliant (2011/65/EU, lead free)
● Case operating temperature
Commercial: 0 ~ +70℃
Industrial: -40 ~ +85℃
Applications
● CPRI Option 10
● 25G Ethernet
● 32G FC
Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
| Supply Voltage | Vcc | -0.3 | 3.6 | V |
| Input Voltage | Vin | -0.3 | Vcc+0.3 | V |
| Storage Temperature | Ts | -40 | 85 | ºC |
| Case Operating Temperature | Tc | -40 | 85 | ºC |
| Humidity (non-condensing) | Rh | 0 | 85 | % |
Recommended Operating Conditions
| Parameter | Symbol | Min | Typical | Max | Unit |
| Supply Voltage | Vcc | 3.13 | 3.3 | 3.47 | V |
| Operating Case Temperature | Tc | -40 | 85 | ºC | |
| Data Rate Per Lane | fd | 24.33/25.78/28.05 | Gb/s | ||
| Humidity | Rh | 0 | 85 | % | |
| Power Dissipation | Pm | 1.8 | W | ||
| Fiber Bend Radius | Rb | 3 | cm |
Electrical Specifications
| Parameter | Symbol | Min | Typical | Max | Unit |
| Differential Input Impedance | Zin | 90 | 100 | 110 | ohm |
| Differential Output Impedance | Zout | 90 | 100 | 110 | ohm |
| Differential Input Voltage Amplitude1 | ΔVin | 300 | 1100 | mVp-p | |
| Differential Output Voltage Amplitude2 | ΔVout | 500 | 800 | mVp-p | |
| Skew | Sw | 300 | ps | ||
| Input Logic Level High | VIH | 2.0 | Vcc | V | |
| Input Logic Level Low | VIL | 0 | 0.8 | V | |
| Output Logic Level High | VOH | Vcc-0.5 | Vcc | V | |
| Output Logic Level Low | VOL | 0 | 0.4 | V |
Note:
- Differential input voltage amplitude is measured between TxnP and TxnN.
- Differential output voltage amplitude is measured between RxnP and RxnN.
Optical Characteristics
| Parameter | Symbol | Min | Typical | Max | Unit |
| Transmitter | |||||
| Data rate | BR | 28.05 | – | Gbps | |
| Optical Wavelength | λc | 1295 | 1309 | 1325 | nm |
| Side-Mode Suppression Ratio | SMSR | 30 | dB | ||
| Spectral Width (-20dB) | Δλ20 | – | – | 1 | nm |
| Average Launch Power | Pout | -3 | 6 | dBm | |
| Optical Modulation Amplitude | OMA | 0 | 6 | dBm | |
| Extinction Ratio | ER | 7 | dB | ||
| Average Launch Power of OFF Transmitter | Poff | -30 | dB | ||
| Rin20OMA | -130 | dB/HZ | |||
| Receiver | |||||
| Data rate | BR | 28.05 | – | Gbps | |
| Center Wavelength | λc | 1295 | 1325 | nm | |
| Average Receive Power | Pavg | -5 | dBm | ||
| Receiver Sensitivity in OMA1 | RSoma | -19 | dBm | ||
| Receiver Reflectance | RR | -26 | dB | ||
| LOS Assert | LOSA | -30 | dBm | ||
| LOS De-Assert | LOSD | -17 | dBm | ||
| LOS Hysteresis | LOSH | 0.5 | dB | ||
Note:Hit Ratio =5×10–5. Unstressed receiver OMA sensitivity.
Mechanical Dimensions

Ordering Information
| Part Number | Product Description |
| FTCS-1325G-40D | 1310nm, SFP28, EML, 25G Ethernet, CPRI, 30KM/40km, 0ºC ~ +70ºC |
| FTCS-1325G-40DI | 1310nm, SFP28, EML, 25G Ethernet, CPRI, 30KM/40km, -40ºC ~ +85ºC |
北亿纤通 | F-tone Networks
企业邮箱:sales@f-tone.com
企业手机:19081343401
企业电话:028-85255257
企业传真:028-85977702
注:本产品有全国产化型号可选
Important Notice
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks 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 F-tone Networks or others. Further details are available from any F-tone Networks sales representative.m any F-tone Networks sales representative. from patent or other protective rights of F-tone Networks or others. rther details are available from any F-tone Networks sales representative.

光学性能测试
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Traffic Testing
测试误码率和丢包率,使其符合相应标准,确保收发器的性能。


光学性能测试
测试光纤收发模块的眼图情况、接收灵敏度、消光比、波长、发光、光接收、电流和电压,以确保信号质量、传输的稳定性和可靠性。
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