单片集成光通信mi收发器芯片(2.5Gbps Tx Burst Mode Laser Transceiver),The CXTB2508 is a highly integrated, programmable burst mode laser driver and liting amplifier intended for ONU/ONT applications up

                          目录Pfc嘉泰姆

   1.产品概述      2.产品特点      3.应用范围     4.技术规格书下载（PDF文档）</span>Pfc嘉泰姆

   5.产品封装      6.电路原理图</strong>     7.相关产品Pfc嘉泰姆

一.产品概述Pfc嘉泰姆

    The CXTB2508 is a highly integrated, programmable burst mode laser driver Pfc嘉泰姆

and limiting amplifier intended for ONU/ONT applications up to 2.5 Gbps. UsingPfc嘉泰姆

LVDS/PECL/CML differential burst and data inputs. The CXTB2508 laser driver hasPfc嘉泰姆

burst enable/disable times of less than 3.3 ns and will automatically maintain Pfc嘉泰姆

the desired extinction ratio. The laser bias and modulation currents can Pfc嘉泰姆

independently be controlled in one of 3 ways - (1) dual closed loop control where Pfc嘉泰姆

the monitor photodiode dynamic response is held to target values, (2) single closed Pfc嘉泰姆

loop control where the average monitor photodiode output is held to a target value Pfc嘉泰姆

or (3) open loop control where the bias and/or modulation current are controlled Pfc嘉泰姆

by a temperature based look-up table. In the closed loop cases, the bias and Pfc嘉泰姆

modulation current value for the first burst may also use the internal temperature Pfc嘉泰姆

sensor and external look-up table. The CXTB2508 limiting amplifier inputs have a Pfc嘉泰姆

selectable bandwidth and selectable output swing. The input sensitivity is better Pfc嘉泰姆

than 4mV at 1.25Gbps and 5mV at 2.5Gbps.The limiting amplifier features a Pfc嘉泰姆

programmable signal level detector with a typical 2dB of optical hysteresis and an Pfc嘉泰姆

internally programmed JAM function which can be used to squelch chatter on the Pfc嘉泰姆

outputs when no signal is present. If the limiting amplifier is not needed, it may Pfc嘉泰姆

be powered down. Pfc嘉泰姆

二.产品特点Pfc嘉泰姆

- Laser driver modulation current up to 100 mA. Bias current up to 80 mA. Pfc嘉泰姆

 Typical rise/fall times < 60 ps. Burst on/off < 3.3 ns Pfc嘉泰姆

- DDMI Compatible Pfc嘉泰姆

- Auxiliary 9-bit DAC, 12-bit A/D Pfc嘉泰姆

- Limiting Amplifier 5mV input sensitivity at 2.5 Gbps, selectable gain and Pfc嘉泰姆

 bandwidth, signal detect and Jam functionsPfc嘉泰姆

- Programmable SPI or 2-wire interface from external EEPROM or optional Pfc嘉泰姆

 microcontroller. (Separate slave and master interfaces.) Pfc嘉泰姆

- Supports IEC-60825 eye safety, including programmable bias and modulation Pfc嘉泰姆

 current limits Pfc嘉泰姆

- Tx system current reduced during Burst-off Pfc嘉泰姆

- Operating temperature -40°C to +85°C, 5x5 QFN packagePfc嘉泰姆

三.应用范围Pfc嘉泰姆

- APON, BPON, EPON, WDM PON, GPON and GEPON FTTX ONU/ONT modules Pfc嘉泰姆

- SFF/SFP modules    Pfc嘉泰姆

四.技术规格书（产品PDF)Pfc嘉泰姆

需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持</span>！</p>

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五.产品封装图</span>Pfc嘉泰姆

  Pfc嘉泰姆

六.电路原理图</strong>Pfc嘉泰姆

   Pfc嘉泰姆

七.相关芯片选择指南Pfc嘉泰姆

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