CWDM transceiver SFP 2.67Gbps 120km Reach

描述

Maximize your network’s performance and reach with our industrial-grade 粗波分复用 transceiver SFP, engineered to deliver reliable 120km transmission at 2.67Gbps data rates.Its robust construction featuring 8 CWDM DFB wavelengths laser and an APD photodetector for superior sensitivity and long-distance performance. Fully compliant with SFP MSA and SFF-8472 standards, it offers seamless compatibility with a wide range of networking equipment. The integrated Digital Diagnostic Monitoring (DDM) function provides real-time oversight of temperature, voltage, and optical power through an I2C interface, enabling predictive maintenance and network optimization. Designed with a +3.3V single power supply and RoHS compliance, this 粗波分复用 transceiver supports critical applications including SDH STM-16, SONET OC-48 systems, 2X Fibre Channel, and core switch-to-switch interfaces.

CWDM transceiver SFP Features

Long-Distance Optical Performance

Supports transmission distances up to 120 kilometers over single-mode fiber (SMF), making it perfect for metropolitan area network (MAN) applications and connecting dispersed data centers.

Utilizes a high-quality, uncooled CWDM DFB laser transmitter and an Avalanche Photodiode (APD) receiver to ensure excellent signal clarity and reception sensitivity over the entire link.

Advanced Digital Diagnostics & Monitoring

Implements full SFF-8472 compliant Digital Diagnostic Monitoring (DDM) with internal calibration.

Provides real-time, accessible monitoring of key parameters: Transmitted Optical Power, Received Optical Power, Laser Bias Current, Supply Voltage, and Module Temperature.

This feature enables proactive network management, helps in troubleshooting, and prevents unexpected downtime.

Broad Compatibility & Standards Compliance

Hot-pluggable SFP form factor with a duplex LC receptacle for easy installation and upgrades.

Fully compliant with SFP Multi-Source Agreement (MSA) standards, ensuring interoperability with a vast array of switches, routers, and media converters from major vendors.

Designed to meet Class I laser safety requirements and is RoHS compliant, adhering to international safety and environmental regulations.

Reliable Operation & Design

Operates on a single +3.3V power supply, simplifying host board design.

Features a standard industrial operating case temperature range of 0°C to +70°C, ensuring stable performance in typical equipment environments.

Includes essential host interfaces such as TX Disable, TX Fault, and Loss of Signal (LOS) indicators for comprehensive link management.

CWDM transceiver 

模块框图

绝对最大额定值

表 1 – 绝对最大额定值

 推荐工作条件

表 2 – 建议的工作条件

BD-XX48-08CD

有关“xx”值，请参见下表 3

表3-λC波长指南

光电特性

BD-XX48-08CD：（CWDM 和 APD，120 公里范围）

表 4 – 光学和电气特性

笔记：

1、将光功率射入SMF。

2. PECL 输入，内部交流耦合和端接。

3. 使用 PRBS 2 测量²³-1个测试模式@2488Mbps，BER ≤1×10^-12.

4. 内部交流耦合。

 计时和电气

表 5 – 时序和电气

CWDM transceiver SFP Diagnostics

表 5 – 诊断规范

 数字诊断内存映射

收发器通过 2 线串行接口（SCL、SDA）提供串行 ID 存储器内容和有关当前操作条件的诊断信息。

诊断信息与内部校准 或外部校准全部实施，包括接收功率监测、发射功率监测、偏置电流监测、电源电压监测和温度监测。

数字诊断存储器映射特定数据字段定义如下。

引脚定义

引脚图

引脚说明

CWDM transceiver Notes:

Plug Seq.：热插拔期间的插针啮合顺序。

1) TX Fault 是集电极开路输出，需要用 4.7k~10k 上拉Ω主板上的电阻将电压调节到2.0V和Vcc+0.3V之间。 逻辑0表示正常工作； 逻辑 1 表示某种激光故障。 在低电平状态下，输出将被拉至低于 0.8V。

2) TX Disable 是用于关闭发射器光输出的输入。 模块内上拉电阻为4.7k~10kΩ电阻器。 它的状态是：

低（0 至 0.8V）：发射器开启

(>0.8V，<2.0V)：未定义

高（2.0 至 3.465V）：发送器禁用

打开：发射器禁用

3) 模-定义 0,1,2。 这些是模块定义引脚。 应该用 4.7k~10k 拉起它们Ω主板上的电阻。 上拉电压应为VccT 或VccR。

Mod-Def 0 由模块接地，表示模块存在

Mod-Def 1 是串行 ID 的两线串行接口的时钟线

Mod-Def 2 是用于串行 ID 的两线串行接口的数据线

4）LOS为集电极开路输出，需用4.7k~10k上拉Ω电阻器。 上拉电压介于 2.0V 和 Vcc+0.3V 之间。 逻辑1表示信号丢失； 逻辑0表示正常操作。 在低电平状态下，输出将被拉至低于 0.8V。

5) RD-/+：这些是差分接收器输出。 它们是内部交流耦合的 100 条差分线，应以 100Ω（差分）在用户 SERDES 处。

6) TD-/+：这些是差分发送器输入。 它们是内部交流耦合的差分线路，具有 100Ω模组内部的差分终端

电阻推荐接口电路

机械尺寸

监管合规性

BAUDCOM SFP 收发器设计符合 I 类激光安全标准，并通过以下标准认证