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yh9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>yh9嘉泰姆

   5.产品封装      6.电路原理图</strong>     7.相关产品yh9嘉泰姆

一.产品概述yh9嘉泰姆

    The CXTB2508 is a highly integrated, programmable burst mode laser driver yh9嘉泰姆

and limiting amplifier intended for ONU/ONT applications up to 2.5 Gbps. Usingyh9嘉泰姆

LVDS/PECL/CML differential burst and data inputs. The CXTB2508 laser driver hasyh9嘉泰姆

burst enable/disable times of less than 3.3 ns and will automatically maintain yh9嘉泰姆

the desired extinction ratio. The laser bias and modulation currents can yh9嘉泰姆

independently be controlled in one of 3 ways - (1) dual closed loop control where yh9嘉泰姆

the monitor photodiode dynamic response is held to target values, (2) single closed yh9嘉泰姆

loop control where the average monitor photodiode output is held to a target value yh9嘉泰姆

or (3) open loop control where the bias and/or modulation current are controlled yh9嘉泰姆

by a temperature based look-up table. In the closed loop cases, the bias and yh9嘉泰姆

modulation current value for the first burst may also use the internal temperature yh9嘉泰姆

sensor and external look-up table. The CXTB2508 limiting amplifier inputs have a yh9嘉泰姆

selectable bandwidth and selectable output swing. The input sensitivity is better yh9嘉泰姆

than 4mV at 1.25Gbps and 5mV at 2.5Gbps.The limiting amplifier features a yh9嘉泰姆

programmable signal level detector with a typical 2dB of optical hysteresis and an yh9嘉泰姆

internally programmed JAM function which can be used to squelch chatter on the yh9嘉泰姆

outputs when no signal is present. If the limiting amplifier is not needed, it may yh9嘉泰姆

be powered down. yh9嘉泰姆

二.产品特点yh9嘉泰姆

- Laser driver modulation current up to 100 mA. Bias current up to 80 mA. yh9嘉泰姆

 Typical rise/fall times < 60 ps. Burst on/off < 3.3 ns yh9嘉泰姆

- DDMI Compatible yh9嘉泰姆

- Auxiliary 9-bit DAC, 12-bit A/D yh9嘉泰姆

- Limiting Amplifier 5mV input sensitivity at 2.5 Gbps, selectable gain and yh9嘉泰姆

 bandwidth, signal detect and Jam functionsyh9嘉泰姆

- Programmable SPI or 2-wire interface from external EEPROM or optional yh9嘉泰姆

 microcontroller. (Separate slave and master interfaces.) yh9嘉泰姆

- Supports IEC-60825 eye safety, including programmable bias and modulation yh9嘉泰姆

 current limits yh9嘉泰姆

- Tx system current reduced during Burst-off yh9嘉泰姆

- Operating temperature -40°C to +85°C, 5x5 QFN packageyh9嘉泰姆

三.应用范围yh9嘉泰姆

- APON, BPON, EPON, WDM PON, GPON and GEPON FTTX ONU/ONT modules yh9嘉泰姆

- SFF/SFP modules    yh9嘉泰姆

四.技术规格书（产品PDF)yh9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>yh9嘉泰姆

  yh9嘉泰姆

六.电路原理图</strong>yh9嘉泰姆

   yh9嘉泰姆

七.相关芯片选择指南yh9嘉泰姆

yh9嘉泰姆