【应用】集成负压、MPD监控的国产EML直流偏置控制器SGM41295助力100G DR1光模块，实现低成本设计

时间： 2021-03-30 来源：世强

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随着数据中心、5G网络等建设加速，100G光模块需求量迅猛增长，这其中，也包括具有端口密度高、功耗低和光纤成本低等优势的100G DR1光模块。如图1所示，100G DR1光模块中，一般需要给EML激光器配一个直流偏置控制器。因为100G DR1价格竞争激烈，且光模块空间有限，所以，这就要求所选的直流偏置控制器要满足集成度高、体积小、价格低的要求。

图1 100G DR1光模块内部电路结构框图

作为国产芯片厂商的杰出代表，圣邦微电子（SGMICRO）一款集成了EA偏置、MPD偏置以及负压的SGM41295，具有集成度高、体积小、系统成本低的优点，可以用于100G DR1光模块EML的直流偏置。

SGM41295为激光二极管EA（电吸收）和监控器电路MPD提供DC偏置。EAM偏置和LD驱动电流源都是可通过I2C数字可编程的，这相当于集成了DAC芯及运放。其中，用于EAM偏置的电压源，供电范围-0.2V至-3.2V（12.5mV /步），最大负载电流为100mA；LD的电流源，电流驱动能力0mA至239.5mA（0.5mA /步），或0mA至119.75mA（0.25mA /步）。SGM41295还提供了由反相电荷泵产生的、等于负输入电压的未稳压负压输出，最大150mA的负载电流，这节省了外置负压发生芯片。如上电气参数，完全满足100G DR1光模块EML的需求。如下图2，是SGM41295典型应用电路。

图2 SGM41295典型应用电路

SGM41295还提供了多种安全措施，比如，在启动过程中无浪涌电流，电荷泵输出还具有短路保护功能、LD短路/断路和EAM短路监控功能、过热警报及过热关机功能等。而且，它的工作温度范围支持-40℃至+ 105℃，这些都大大增强了100G DR1的EML驱动中的安全特性。

最后，SGM41295还采用了绿色TQFN-3×3-16L封装，尺寸仅3×3mm，这正好满足了100G DR1 PCB面积小的特点。

图3 SGM41295封装及PIN脚

综上，圣邦微EML直流偏置控制器SGM41295，集成了EA偏置、MPD偏置以及负压等，使得无需外扩DAC芯片、运放、负压等，从而节约了系统成本，而且它还具有安全性好、体积小等优点，非常适宜用在100G DR1光模块中。

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【应用】国产直流偏压控制器SGM41295助力EML调制光模块项目，简化EML控制电路

对于EML控制，不仅需要给EA提供负压，还需要搭建LD Bias电路，需要集成度高的小封装芯片。推荐圣邦微电子的直流偏压控制器SGM41295，不仅封装小，而且还内置Ibias，可调EA负压、MPD、电流镜像检测及状态上报等功能，可大大简化EML控制电路，节省空间。

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SGMICRO（圣邦微）信号链和电源管理芯片选型指南

描述- SGMICRO specializes in high-performance and high-quality analog and mixed-signal integrated circuits, and is committed to building a comprehensive portfolio of the highest quality analog and mixed-signal integrated circuits to address all customer needs.

型号- 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

2024/6/11 - SGMICRO - 选型指南代理服务技术支持现货查询批量订货查看更多版本

SGMICRO（圣邦微）信号链和电源管理芯片选型指南

目录- Company Profile Amplifiers Comparators Data Converters Voltage References Audio/Video Drivers Analog Switches Logic Ics Temperature Sensors RF Switches Supervisory Circuits LDOs System Power Management Ics Battery Management Ics LED Drivers LCD & OLED Display Powers and Drivers Switch Mode Power Ics Application-Specific Auxiliary Powers Motor/Gate Driver Index

型号- SGM61450,SGM3733B,SGM2558A,SGM5347-12,SGM2558B,SGM8261-5,SGM2564,SGM8261-1,SGM5347-10,SGM8261-2,SGM2549,SGM48017C,SGM72110,SGM8094,SGM836,SGM8091,SGM837,SGM61220,SGM8092,SGM8093,SGM835,SGM72108,SGM2553,SGM72106,SGM2555,SGM809B,SGM4519,SGM4517,SGM48018,SGM4518,SGM48010,SGM63600,SGM4520,SGM4521,SGM48005,SGM8417-4,SGM8417-2,SGM4051C,SGM48000,SGM48001,SGM48002,SGM3843A,SGM61433,SGM84782,SGM621,SGM58031,SGM620,SGM41600,SGM2572,SGM41603,SGM2571,SGM2574,SGM51622H,SGM4995,SGM4511,SGM4996,SGM4512,SGM2576,SGM2575,SGM4510,SGM2578,SGM4515,SGM4516,SGM8250-1,SGM8250-2,SGM4514,SGM3209,SGM809,SGM8557-3,SGM8557-1,SGM8557-2,SGM803,SGM61012,SGM804,SGM802,SGM61013,SGM810,SGM811,SGM4782,SGM7237B,SGM8902,SGM8903,SGM8904,SGM4542,SGM8905,SGM4548,SGM4549,SGM3699,SGM4546,SGM4547,SGM48013C,SGM62110,SGM61020,SGM62112,AAP6153A,SGM61022,SGM62111,SGM800,SGM2553/D,SGM2596,SGM3200,SGM3206,SGM8270-2,SGM3207,SGM4535,SGM3204,SGM8270-4,SGM8T245,SGM829,SGM61230,SGM42512,SGM41664,SGM825,SGM823,SGM61234,SGM824,SGM891B,SGM832,SGM42507,SGM42506,SGM830,SGM831,SGM4563,SGM40567,SGM4560,SGM42505,SGM4561,SGM6503,SGM4566,SGM6502,SGM8925,SGM6501,SGM8926,SGM4564,SGM8927,SGM5349-16,SGM6505,SGM4568,SGM6504,SGM8909,SGM890B,SGM816,SGM42501,SGM40565,SGM42500,SGM814,SGM815,SGM812,SGM40560,SGM40561,SGM821,SGM822,SGM820,SGM4551,SGM4552,SGM4550,SGM4555,SGM4556,SGM4553,SGM4554,FT2910,SGM8910,SGM5347-8,SGM4558,SGM11124F,74LVC2T45,SGM893B,SGM4581,SGM8941,SGM4582,SGM4583,SGM8704,SGM4588,SGM8705,SGM4589,SGM8706,SGM8707,SGM8942,SGM8701,SGM8702,SGM8703,SGM12213A,SGM892B,SGM6510,SGM8276-4,SGM4573,SGM3001,SGM4574,SGM42513,SGM6514,SGM6513,SGM3005,SGM4578,SGM6512,SGM8276-2,SGM3002,SGM42622B,SGM6511,SGM8276-1,SGM3003,SGM4576,SGMOP17C,SGM6518,SGM8931,SGM8932,SGM6516,SGM12214A,SGM8933,SGM6515,SGM8934,74AVC8T245,SGM3141B,SGM42553,SGM61031,SGM62116,SGM62115,SGM8953-1,SGM62118,SGM8953-2,SGM62117,SGM8708,SGM8709,SGM4075-2,SGM3140B,SGM4075-1,SGM42544,SGM7300A,SGM7300B,SGM42541,SGM42540,SGM8951,SGM8710,SGM8952,SGM5200,SGM38045,SGM38042,SGM6533,SGM8711,SGM8712,SGM8955,SGM38046,SGM8956,SGM8199L2,LM2904,SGM8199L1,SGM41002,SGM8968-4,SGM8968-2,LM2902,SGM8968-1,SGM8740,SGM8741,SGM8742,SGM8743,SGM8263-1,SGM8748,SGM8263-2,SGM8417-1,SGM8749,SGM8744,SGM40666B,SGM8745,SGM40666A,SGM8746,SGM8747,SGM41513D,SGM41513A,SGM42561,SGM42560,SGM8957-1,SGM8957-2,SGM42562,SGM5208-14,SGM5223,SGM48018C,SGM11102F,SGM41512A,SGM37603A,SGM8521,SGM8522,SGM5018,74LVTN16244,74LVTN16245,SGM8524,SGM8604-1,SGM11103F,SGM8193A3,SGM8604-5,SGM8193A2,SGM8604-2,SGM48019C,SGM8193A1,SGM8604-3,SGM8193A0,SGM37604A,SGM8751,SGM41007,SGM41008,SGM6332,SGM8750,SGM41280,SGM41281,SGM41283,SGM5353-16,SGM37891A,SGM41285,SGM41286,SGM8542,SGM51652H8,SGM8301,SGM8543,SGM8302,SGM8544,SGM8545,SGM51652H4,SGM8541,SGM8429C-4,SGM8304,SGM37892A,SGM8531,SGM8773,SGM8532,SGM8774,SGM8534,74LVTH125,SGM8770,SGM8771,SGM8772,SGM8535,SGM8536,SGM8537,SGM8538,SGM65230,74LVC2G04,SGM37893A,SGM65231,74LVC2G08,SGM65232,SGM8969-2,SGM8969-1,SGM2035C,SGM7232,SGM9128YP,SGM41291,SGM2036S,74LVC1G32Q,74LVC2G14,SGM13001C,SGM13001B,SGM2581E,74LVC138,SGM8958-2,SGM41295,SGM13001A,SGM8958-1,SGM7222,SGM6132,SGM8554,SGM7223,SGM8555,SGM7224,SGM6130,SGM8556,SGM2581C,SGM7220,SGM2581A,SGM8551,SGM8552,SGM7226,SGM7227,SGM7228,SGM7229,SGM44599,SGM8581,SGM7SZ32,SGM8713A-1,SGM8582,SGM6613A,SGM8584,SGM41282C,SGM8714B-1,SGM8924A,SGM58XXX,SGM5355-16,SGM7SZ19,74LVC1G125,SGM89000,SGM811B,SGM7SZ14,SGM48752X,SGM431VB,SGM2560A,SGM37603,SGM2560B,SGM6611C,SGM810B,SGM7SZ08,SGM7SZ04,SGM8591,SGM7SZ00,SGM8592,SGM9203,SGM6612A,SGM8594,SGM8922A,SGM4T245,SGM48753,SGM48754,SGM48755,SGM48756,SGM48757,SGM813B,SGM48759,74AVC4T245,SGM8140,SGM8141,SGM48751,SGM449,SGMNQ07430,SGM48752,SGM48510,SGM458,SGM3785S,SGM459,SGM457,SGM8142,SGM452,SGM450,SGM451,SGM37862,SGM37861,SGM812B,74GTL2005,SGM447,SGM448,SGM446,SGM7SZ244,SGM8478-1C,SGM7SZ245,SGM8139,SGM48537,SGM48538,SGM48539,SGM5351-16,SGM2588G,74LVCN16373,SGM2588E,SGM61032A,SGM2588K,SGM61032B,SGM2588I,SGM3712,SGM2588C,SGM3713,SGM3710,SGM2588A,SGM3711,SGM48523,SGM48524,SGM48525,SGM48526,SGM48760,SGM48520,SGM8557-5,SGM71XX,SGM706B,SGM3700,SGM3727,SGM3741B,SGM3725,SGM3726,SGMOP07,SGM898,SGM899,SGM896,SGM897,SGM895,SGM61030A,SGM61030B,SGM2566B,SGM4823,SGM3735,SGM3732,SGM2566A,SGM4822,SGM3716,SGM3740B,SGM4806,SGM3717,SGM3714,SGM3715,SGM4809,SGM4807,SGM3718,SGM4808,SGM3719,74LVC157,SGM48780,SGM48540,SGM37898,SGM51652H,SGM3720,SGM37891,SGM4812,SGM37892,SGM2567A,SGM4810,SGM37895,SGM3749,SGM3747,SGM3748,74LVTH16244,SGM72204A,SGMNQ40430,SGM432,74AHCT86,SGM431,SGM3752,SGM3753,SGM3750,SGM3756,SGM3757,SGM3755,SGM3738,SGM4825,SGM3736,SGM4826,SGM7SZ86,SGM3851A,SGM8198,SGM3741,SGM660,SGM3740,SGM3743,SGM41562B,SGM724,SGM72112B,SGM5209-14,SGM72112A,SGM2200,SGM4863,SGM2202,SGM2201,SGM2204,SGM2203,SGM2206,SGM4865,SGM2205,SGM3758,SGM3759,SGM8416-4,SGM722,SGM723,SGM721,SGM3760,SGM72004B,SGMNM45412,SGM8295-2,SGM8295-4,SGM8480-2,SGM2523C,SGM2523D,SGM2523A,SGM8295-1,SGM2523B,SGM3766,SGM4040B,SGM790A,SGM330A,SGM790B,SGM790C,SGM41100A,SGM41100V,SGM41100W,SGM2220,SGM8262-2,SGM8416-1,SGM2221

2023/4/7 - SGMICRO - 选型指南代理服务技术支持现货查询批量订货

圣邦微在光模块中应用的相关产品，涵盖TEC/APD/EML驱动、高性能运放、DCDC等｜视频

比较全面的展示了圣邦微在光模块中应用的相关产品，总的来说目前是有20--30个光模块相关产品。主要涵盖了TEC＼APD＼EML驱动这样的专用器件，高性能运放、电源相关LDO＼DCDC、负压，负载开关以及温度传感器等产品。

2023-11-17 - 新产品代理服务技术支持现货查询批量订货

SGM41295S DC Bias Controller for EML

型号- SGM41295S,SGM41295SGTQ16G/TR

JULY 2024 - SGMICRO - 数据手册 - REV. A. 1 代理服务技术支持现货查询批量订货

SGM41295 DC Bias Controller for EML

型号- SGM41295GTQ16G/TR,SGM41295

NOVEMBER 2023 - SGMICRO - 数据手册 - REV. B 代理服务技术支持现货查询批量订货查看更多版本

SGM41278 DC Bias Controller for Quad EML

型号- SGM41278XG/TR,SGM41278

DECEMBER 2023 - SGMICRO - 数据手册 - REV. A 代理服务技术支持现货查询批量订货

SGM41291 DC Bias Controller for EML

型号- SGM41291,SGM41291XG/TR

NOVEMBER 2023 - SGMICRO - 数据手册 - REV.A.3 代理服务技术支持现货查询批量订货查看更多版本

【选型】50G高速光模块中推荐圣邦微EML控制芯片SGM41295，集成LD BIAS、EA BIAS及MPD监控

50G高速光模块产品中大量使用EML激光器，而EML激光器需要外部给一个直流LD Bias电流、一个可调的负电压EA BIAS、还需要一个对负电压的MPD电流监控。在急需一颗高集成度电路芯片、同时选型应以国产芯片为主的大前提下，圣邦微电子的SGM41295是优秀的解决方案。

2021-01-06 - 器件选型代理服务技术支持现货查询批量订货

SGM光模块/小基站应用解决方案 | ICT及5G通信专场世强硬创新产品研讨会

型号- SGM41285B,SGM41285A,SGM41282,SGM41283,SGM8604-X,MP3430,ADN8834,SGM8558-2,MAX15059,ADN8835,SGM41285,SGM2564,SGM2567,SGM2566,SGM8604-1,SGM8604,SGM41291,SGM8605-1,SGM66099,SGM41282C,MP8833,SGM41299,SGM41295,SGM41296,SGM41298,SGM6032,SGM6031,SGM6030,SGM2031,SGM874X,SGM660,SGM2036,SGM8558,SGM2567A

2021.3.31 - SGMICRO - 商品及供应商介绍代理服务技术支持现货查询批量订货