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产品型号
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JFTSM-SFP28-25-13-20(LR)-LCD
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工厂品牌
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JFOPT嘉富
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封装形式
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SFP28
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光口类型
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双联LC
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最高总速率
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25.78G
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每通道速率
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10.31Gbps
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最大传输距离
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20km
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工作波长
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1310nm
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工作电压
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3.3V
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光纤型号
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SMF
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纤芯尺寸
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9/125
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发射器类型
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DFB-LD
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接收器类型
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CDR
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发射功率
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-7~2dbm
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接收灵敏度
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＜9.5dBm
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数字诊断
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YES
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接收过载
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2dBm
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功耗
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<1.2W
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支持协议
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SFF-8402
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工作温度(商业级)
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0℃~+70℃
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储存温度（商业级）
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-40℃~+85℃
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工作温度(工业级)
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-40℃~+85℃
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储存温度（工业级）
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-40℃~+85℃
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生产线介绍
PRODUCTION LINE INTRODUCTION
JFOPT嘉富持续投入光模块生产领域，产品覆盖1*9、SFP、10G、25G、100G、200G、400G、800G GPON/EPON/XG/XGSPON OLT等全系列光模块。同时为下游同行提供TOSA、ROSA、BOSA等光器件半成品解决方案。JFOPT嘉富生产线具备日产量一万只光模块、两万只光器件的能力。此外，JFOPT嘉富光模块拥有业界领先的耐高温、抗干扰特性，广泛应用于计算中心、运营商、交通安防、电力设施等行业领域。
产品介绍
PRODUCT PRESENTATION
JFOPT SFP28 25G 1310nm 20km LR LC DX光模块是一款专为双工光通信设计的高性能解决方案，支持25.78Gbps数据传输速率，采用SFP+ 20-pin接口实现热插拔功能，并通过I2C接口提供数字诊断监控；其内置双时钟数据恢复（CDR）电路显著增强信号完整性，该单模光纤收发器标称工作波长为1310nm——发射端集成符合Class 1激光安全标准（IEC 60825）的高性能1310nm DFB激光器，接收端则搭载光学封装集成的铟镓砷探测器前置放大器（IDP）并配合限幅后置放大器芯片，确保可靠高效的运行性能。
光模块系列产品
TRANSCEIVER SERIES PRODUCTS
生产及检测设备
PRODUCTION & TESTING EQUIPMENT
产品特点
FEATURES
| Single +3.3V power supply | Hot-pluggable | ||||||||
| Built-in dual CDR | Support 25.78 Gb/s data links | ||||||||
| Up to 20km on 9/125um SMF | Operating case temperature:-40~+85 | ||||||||
| Very low EMI and excellent ESD protection | Power dissipation < 1.2W |
应用范围
APPLICATION
| 25GbE | CPRI | ||||||||
| Other optical links |
符合标准
STANDARD COMPLIANCE
绝对最大额定值
ABSOLUTE MAXIMUM RATINGS
| Parameter | Symbol | Unit | Min. | Max. | |||||
| Storage temperature range | Ts | °C | -45 | 85 | |||||
| Relative humidity | RH | % | 0 | 95 | |||||
| Input voltage | Vcc | V | 0 | 4 | |||||
建议操作条件
RECOMMENDED OPERATING CONDITIONS
| Parameter | Symbol | Unit | Min. | Typ. | Max. | ||||
| Operating case temperature range | Tc | ℃ | -45 | - | 85 | ||||
| Supply voltage | Vcc | V | 3.135 | 3.3 | 3.465 | ||||
| Bit rate | BR | Gb/s | - | 25.78125 | - | ||||
| Max supported link length | L | km | - | - | 20 | ||||
电气端口定义
ELECTCTRICAL PORTS DEFINITION
| Parameter | Symbol | Unit | Min. | Typ. | Max. | Note | |||
| Power dissipation | - | W | - | - | 1.2 | - | |||
Transmitter |
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| Input differential impedance | RIN | Ω | - | 100 | - | - | |||
| Single ended data input swing | VIN | mVp-p | 90 | - | 450 | - | |||
| Tx_disable input voltage – low | VIL | V | -0.3 | - | 0.8 | - | |||
| Tx_disable input voltage – high | VIH | V | 2.0 | - | Vcc+0.3 | - | |||
| Tx_fault output voltage – low | VOL | V | -0.3 | - | 0.8 | - | |||
| Tx_fault output voltage – high | VOH | V | 2.0 | - | Vcc+0.3 | - | |||
Receiver |
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| Output impedance (Differential) | Zout | V | - | 100 | - | - | |||
| Rx_LOS output voltage - low | VOL | V | -0.3 | - | 0.8 | - | |||
| Rx_LOS output voltage- high | VOH | V | 0.2 | - | Vcc+0.3 | - | |||
光发射机/接收机特性
OPTICAL TRANSMITTER/RECEIVER CHARACTERISTICS
| Parameter | Symbol | Unit | Min. | Typ. | Max. | Note | |||
Transmitter |
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| Center wavelength | λ | nm | 1295 | 1310 | 1325 | - | |||
| Data rate | B | Gb/s | - | 25.78 | - | - | |||
| Output spectral width | λ(-20dB) | nm | - | - | 1 | - | |||
| Optical output power | Po | dBm | -7 | - | 2 | - | |||
| Extinction ratio | ER | dB | 3.5 | - | - | - | |||
| Transmitterand dispersion penalty | TDP | dB | - | - | 3.2 | - | |||
Receiver |
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| Operating wavelength | λ | nm | 1260 | - | 1355 | - | |||
| Overload | - | dBm | 2 | - | - | - | |||
| Receiver sensitivity (OMA) | POMA | dBm | - | - | -11.3 | - | |||
| Optical return loss | ORL | dB | - | - | -26 | - | |||
| Signal detect threshold-de-assert | SD | dBm | - | - | -14 | - | |||
| LOS hysteresis | - | dB | 0.5 | - | - | - | |||
SFP28收发器电气焊盘布局
SFP28 TRANSCEIVER ELECTRICAL PAD LAYOUT
收发器引脚说明
TRANSCEIVER PIN DESCRIPTIONS
| Pin No. | Symbol | Logic | Description | ||||||
| 1,20 | VEET | - | Transmitter ground(common with receiver ground) | ||||||
| 2 | TX fault | LVTTL output | Transmitter fault. low normal operation, high fault indication | ||||||
| 3 | TX disable | LVTTL input | Transmitter disable. laser output disabled on high or open | ||||||
| 4 | SDA | LVTTL input/output | Module definition 2.data line for serial ID | ||||||
| 5 | SCL | LVTTL input/output | Module definition 1.clock line for serial ID | ||||||
| 6 | MOD-ABS | - | Module definition 0.grounded within the module | ||||||
| 7 | RS0 | LVTTL input | Rate select 0, optionally controls SFP28 module receiver. LVTTL logic. | ||||||
| 8 | LOS | LVTTL output | Loss of signal indication. Logic 0 indicates normal operation. | ||||||
| 9 | RS1 | LVTTL input | Rate select 1, optionally controls SFP28 module transmitter. LVTTL logic. | ||||||
| 10,11,14 | VEER | - | Receiver ground(common with transmitter ground) | ||||||
| 12 | RD- | CML output | Receiver inverted DATA out.AC coupled | ||||||
| 13 | RD+ | CML output | Receiver non-inverted DATA out.AC coupled | ||||||
| 15 | VCCR | - | Receiver power supply | ||||||
| 16 | VCCT | - | Transmitter power supply | ||||||
| 18 | TD+ | CML input | Transmitter non-inverted DATA in.AC coupled | ||||||
| 19 | TD- | CML input | Transmitter inverted DATA in.AC coupled | ||||||
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