| 产品型号 | JFTSM-SFP28-25-LWD-40-LCD | 工厂品牌 | JFOPT嘉富 |
| 封装形式 | SFP28 | 光口类型 | 双联LC |
| 最高总速率 | 25.78G | 每通道速率 | - |
| 最大传输距离 | 40km | ||
| 工作波长 | 1286.66nm
1291.10nm
1295.56nm
1300.05nm
1304.58nm
1309.14nm
|
工作电压 | 3.3V |
| 光纤型号 | SMF | 纤芯尺寸 | 9/125 |
| 发射器类型 | EML LWDM | 接收器类型 | APD |
| 发射功率 | -2~6dBm | 接收灵敏度 | <-19dBm |
| 数字诊断(DOM) | YES | 接收过载 | - |
| 功耗 | 1.5W | 支持协议 | SFF-8431, SFF-8472和IEEE 802.3CC |
| 工作温度(商业级) | 0℃~+70℃ | 储存温度（商业级） | -40℃~+85℃ |
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 LWDM 40公里 LC DX光模块是一款紧凑型高性能光模块，专为25GBASE-ER以太网应用设计。该模块可将25Gbps串行CML电信号转换为串行光数据，并确保符合25GBASE-ER标准。采用EML发射器与APD接收器，为长达40公里的单模光纤链路提供卓越性能，严格遵循SFF-8431、SFF-8432及IEEE 802.3CC标准，保障稳定可靠的运行。通过SFF-8472规范定义的双线串行接口可实现数字诊断监控功能。全兼容的SFP28封装形态支持热插拔特性，可简化光端口升级流程，最大程度降低电磁干扰，从而成为高速网络环境的理想解决方案。
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
| 25.78Gb/s bit rates | Hot-pluggable | ||||||||
| EML transmitter, APD photo-detector | Up to 40km on SMF | ||||||||
| Operating case temperature range: 0~ 70°C | 2-wire interface for management specifications compliant with SFF 8472 digital diagnostic monitoring interface for optical transceivers | ||||||||
| Duplex LC connector | Power supply :+3.3V | ||||||||
| Cost effective SFP28 solution, enables higher port densities and greater bandwidth | Low power consumption<1.5W |
应用范围
APPLICATION
| High-speed storage area networks | Computer cluster cross-connect | |||||||
| Custom high-speed data pipes | Inter rack connection | |||||||
| WDM system | ||||||||
符合标准
STANDARD COMPLIANCE
绝对最大额定值
ABSOLUTE MAXIMUM RATINGS
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Ref. | |||
| Storage temperature | TS | -40 | - | +85 | ℃ | - | |||
| Case operating temperature | TA | 0 | - | 70 | ℃ | - | |||
| Maximum supply voltage | VCC | 0 | - | 3.6 | V | - | |||
| Relative humidity | RH | 5 | - | 95 | % | - | |||
电气特性
ELECTRICAL CHARACTERISTICS
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Ref. | |||
| Supply voltage | VCC | 3.135 | - | 3.465 | V | - | |||
| Supply current | ICC | - | - | 606 | mA | - | |||
| Power consumption | P | - | - | 2 | W | - | |||
| Data rate | R | - | 25.78 | - | Gb/s | - | |||
Transmitter section: |
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| Input differential impedance | Rin | - | 100 | - | Ω | 1 | |||
| Tx input single ended DC voltage tolerance (ref VeeT) | V | -0.3 | - | 4 | V | - | |||
| Differential input voltage swing | Vin,pp | 180 | - | 700 | mV | 2 | |||
| Transmit disable voltage | VD | 2 | - | VCC | V | - | |||
| Transmit enable voltage | VEN | Vee | - | Vee+0.8 | V | - | |||
Receiver section: |
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| Single ended output voltage tolerance | V | -0.3 | - | 4 | V | - | |||
| Rx output diff voltage | VO | 150 | - | 900 | mV | - | |||
| Rx output rise and fall time | Tr/Tf | 9.5 | - | - | ps | 3 | |||
| LOS fault | VLOS fault | 2 | - | VCCHOST | V | 4 | |||
| LOS normal | VLOS norm | Vee | - | Vee+0.8 | V | 4 | |||
| Notes: 1.Connected directly to TX data input pins. AC coupling from pins into laser driver IC. 2.Per SFF-8431 Rev 3.0 3.20%～80% 4.LOS is an open collector output. Should be pulled up with 4.7k – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V. |
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光学特性
OPTICAL CHARACTERISTICS
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Ref. | |||
Transmitter section: |
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| Center Wavelength | λt | 1285.51 | 1286.66 | 1287.81 | nm | - | |||
| 1289.95 | 1291.1 | 1292.25 | |||||||
| 1294.41 | 1295.56 | 1296.71 | |||||||
| 1298.9 | 1300.05 | 1301.2 | |||||||
| 1303.43 | 1304.58 | 1305.73 | |||||||
| 1307.99 | 1309.14 | 1310.29 | |||||||
| spectral width | △λ | - | - | 1 | nm | - | |||
| Average optical power | Pavg | -2.0 | - | +6 | dBm | 1 | |||
| Laser off power | Poff | - | - | -30 | dBm | - | |||
| Extinction ratio | ER | 4 | - | - | dB | - | |||
| Receiver section: | - | - | - | - | - | - | |||
| Center wavelength | λr | 1295 | - | 1325 | nm | - | |||
| Receiver sensitivity(OMA) | Sen | - | - | -19 | dBm | 2 | |||
| Stressed sensitivity(OMA) | Sen2 | - | - | -16.5 | dBm | 2 | |||
| Los sssert | LOSA | -30 | - | - | dBm | - | |||
| Los dessert | LOSD | - | - | -20 | dBm | - | |||
| Los hysteresis | LOSH | 0.5 | - | 5 | dB | - | |||
| Overload | Sat | -6 | - | - | dBm | 3 | |||
| Receiver reflectance | Rrx | - | - | -12 | dB | - | |||
| Notes: 1.Average power figures are informative only, per IEEE802.3CC. 2.Conditions of stressed receiver tests per IEEE802.3CC. At 5E-5 BER. 3.Receiver overload specified in OMA and under the worst comprehensive stressed condition. |
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时序特性
TIMING CHARACTERISTICS
| Parameter | Symbol | Min. | Typ. | Max. | Unit | ||||
| TX_disable assert time | t_off | - | - | 100 | us | ||||
| TX_disable negate time | t_on | - | - | 2 | ms | ||||
| Time to initialize include reset of TX_FAULT | t_int | - | - | 300 | ms | ||||
| TX_FAULT from fault to assertion | t_fault | - | - | 1 | ms | ||||
| TX_disable time to start reset | t_reset | 10 | - | - | us | ||||
| Receiver loss of signal assert time | TA,RX_LOS | - | - | 100 | us | ||||
| Receiver loss of signal de assert time | Td,RX_LOS | - | - | 100 | us | ||||
| Rate-select chage time | t_ratesel | - | - | 10 | us | ||||
| Serial ID clock time | t_serial-clock | - | - | 100 | kHz | ||||
数字诊断监控信息
DIGITAL DIAGNOSTIC MONITORING SPECIFICATIONS
| Data Address | Parameter | Accuracy | Unit | ||||||
| 96-97 | Transceiver internal temperature | ±3.0 | ℃ | ||||||
| 98-99 | VCC3 internal supply voltage | ±3.0 | % | ||||||
| 100-101 | Laser bias current | ±10 | % | ||||||
| 102-103 | Tx output power | ±2.0 | dBm | ||||||
| 104-105 | Rx input power | ±2.0 | dBm | ||||||
引脚分配
PIN ASSIGNMENT
| Pin | Name | Function | Notes | ||||||
| 1 | VeeT | Module transmitter ground | 1 | ||||||
| 2 | TX fault | Module transmitter fault | 2 | ||||||
| 3 | TX disable | Transmitter disable; Turns off transmitter laser output | 3 | ||||||
| 4 | SDL | 2 wire serial interface data input/output (SDA) | 4 | ||||||
| 5 | SCL | 2 wire serial interface clock input (SCL) | 4 | ||||||
| 6 | MOD_ABS | Module absent, connect to VeeR or VeeT in the module | 2 | ||||||
| 7 | RS0 | Rate select0, optionally control SFP+ receiver. When high, input data rate >4.5Gb/ s; when low, input data rate <=4.5Gb/s | - | ||||||
| 8 | LOS | Receiver Loss of signal indication | - | ||||||
| 9 | RS1 | Rate select0, optionally control SFP+ transmitter. When high, input data rate >4.5Gb/s; when low, input data rate <=4.5Gb/s | - | ||||||
| 10 | VeeR | Module receiver ground | 1 | ||||||
| 11 | VeeR | Module receiver ground | 1 | ||||||
| 12 | RD- | Receiver inverted data out put | - | ||||||
| 13 | RD+ | Receiver non-inverted data out put | - | ||||||
| 14 | VeeR | Module receiver ground | 1 | ||||||
| 15 | VccR | Module receiver 3.3V supply | - | ||||||
| 16 | VccT | Module transmitter 3.3V supply | - | ||||||
| 17 | VeeT |   Module transmitter ground |
1 | ||||||
| 18 | TD+ | Transmitter non-inverted data out put | - | ||||||
| 19 | TD- |   Transmitter inverted data out put |
- | ||||||
| 20 | VeeT | Module transmitter ground | 1 | ||||||
| Notes: 1.The module ground pins shall be isolated from the module case. 2.This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board. 3.This pin shall be pulled up with 4.7K-10Kohms to VccT in the module. 4.This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board. |
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