Abstract: In optical communication systems, sensitivity is a measure of how weak an input signal can get before the bit-error ratio (BER) exceeds some specified number. The standards body governing the application sets this specified BER. For example, SONET specifies that the BER must be 10 -10 or better. Gigabit Ethernet and Fibre Channel specifications require a BER of 10 -12 or better. This BER is the foundation for determining a receiver's sensitivity. In the design of an optical receiver, such as a small form factor optical transceiver module, it is vital that the module be capable of converting and shaping the optical signal while meeting or surpassing the maximum BER. Ultimately, the influence of noise on the signal will determine the sensitivity of the system. The portion of the receiver that contributes the most noise is the optical-to-electrical conversion provided by the photodetector and the transimpedance amplifier (TIA). More often than not, designers will use a combination of simple estimation and "rules of thumb" to predict performance and select components. This discussion presents a reliable method for estimating the receiver's sensitivity. 你所查询的应用笔记提供Acrobat PDF格式： APPLICATION NOTE 607:HFAN-03.0.0: Accurately Estimating Optical Receiver Sensitivity (PDF, 77kB) 免费Acrobat PDF阅读软件可从以下网站获得： http://chinese-s.adobe.com/products/acrobat/readstep2.html 相关型号   APP 607: Oct 05, 2001 MAX3271 +3.3V、2.5Gbps低功耗互阻放大器 完整的数据资料 (PDF, 268kB) MAX3275 低噪声、光纤通道互阻放大器 完整的数据资料 (PDF, 1.3MB) MAX3277 低噪声、光纤通道互阻放大器 完整的数据资料 (PDF, 1.3MB) MAX3825 +3.3V、2.5Gbps、四路、互阻放大器，用于系统互连 完整的数据资料 (PDF, 620kB) MAX3864 2.5Gbps、+3V至+5.5V、宽动态范围互阻前置放大器 完整的数据资料 (PDF, 308kB) MAX3970 10Gbps、3.3V、低功耗互阻放大器，带有RSSI 完整的数据资料 (PDF, 492kB) 自动更新 需要自动接收最新发布的应用笔记吗？请订阅EE-Mail™ (English only)。 我们期待您的反馈！ 喜欢？不喜欢？有待改善？或为我们提供建议？请与我们联系 — 我们将根据您的意见或建议改善我们的工作。 网页评价或提供建议   下载，PDF格式 (77kB)  AN607, AN 607, APP607, Appnote607, Appnote 607