【应用】供电电压2.5~5.5V的音频功放芯片SGM4871用于液晶面板,助力智能语音化
传统的面板往往都是一些开关或者增加了指示灯、液晶屏等功能,而目前了解到一些客户正在准备给面板增加语音功能,有些是把AI语音交互功能设计在面板上,语音功能放在面板上还是比较新的尝试,所以有些仅仅是增加语音播报功能,用来试探市场。下图是增加语音播报功能的液晶面板系统框图:
图一 线性调光器模拟DAC部分系统框图
从上图中我们可以看到,该产品仅仅是在液晶面板的基础上增加语音播报功能,语音播报功能主要依靠的是语音芯片+音频功放。客户的音频功放芯片原本计划使用广芯的产品,后来客户表示想要更换使用圣邦微(SGMICRO)的产品,需要世强帮忙推荐型号。与客户沟通,客户使用的是4Ω喇叭,要求5V供电,功率2.4W、2.5W都可。客户原型号规格为2.2W、2.5V~5.5V供电、SOP8封装,因此推荐圣邦微SGM4871音频功放芯片。
图二 SGM4871封装
该器件在项目中应用主要有以下几个优势:
SGM4871YPS8/TR采用ESOP8封装,底部带有散热焊盘,更好的散热效果;
供电电压范围2.5V~5.5V,满足客户5V供电的需求;
负载为4Ω的喇叭时典型功率为2.4W,驱动能力强、声音大;
具有低功耗停机模式和热停机保护,更加安全;
不需要输出耦合电容、自举电容或缓冲网络,降低元器件成本。
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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- SGM11108M,SGM8306-2,SGM8306-1,SGM61450,SGM3733B,SGM11108E,SGM852,SGM853,SGM851,SGM5347-12,SGM2558A,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,SGM4518,SGM48010,SGM11106C,SGM63600,SGM41611,SGM4520,SGM4521,SGM48005,SGM8417-4,SGM8417-2,SGM4051C,SGM48000,SGM48001,SGM48002,SGM3843A,SGM61433,SGM621,SGM84782,74HC574,SGM58031,SGM620,SGM862,SGM41600,SGM2572,SGM41603,SGM860,SGM2571,SGM51622H,SGM4995,SGM4511,SGM2574,SGM4996,SGM4512,SGM4510,SGM2575,SGM51622D,SGM4515,SGM8T245S,SGM4516,SGM8250-1,SGM8250-2,SGM4514,SGM3209,SGM809,SGM8557-3,SGM8557-1,SGM8557-2,SGM803,SGM61012,SGM804,SGM802,SGM61013,SGM810,SGM811,SGM61007,SGM61006,SGM4782,SGM7237B,SGM8902,SGM8903,SGM8904,SGM4542,SGM8905,SGM4548,SGM4549,SGM3699,SGM4546,SGM4547,SGM48013C,SGM62110,SGM61020,SGM62112,AAP6153A,SGM61022,SGM62111,SGM800,SGM2596,SGM3200,SGM3206,SGM8270-2,SGM3207,SGM4535,SGM3204,SGM8270-4,SGM8T245,SGM829,SGM61230,SGM42512,SGM41664,SGM825,SGM61232,SGM823,SGM61234,SGM824,SGM891B,SGM42507,SGM42506,SGM40567,SGM4560,SGM42505,SGM4561,SGM6503,SGM4566,SGM8925,SGM6502,SGM8926,SGM6501,SGM4564,SGM8927,SGM5349-16,SGM4565,SGM6505,SGM4568,SGM6504,SGM8909,SGM818,SGM890B,SGM816,SGM42501,SGM40565,SGM42500,SGM814,SGM815,SGM812,SGM40560,SGM40561,SGM821,SGM822,SGM61235,SGM820,SGM4551,SGM4552,SGM4550,SGM4555,SGM4556,SGM4553,SGM4554,SGM51652S8,SGM8910,SGM5347-8,SGM4558,SGM11124E,SGM37863A,SGM11124F,74LVC2T45,SGM893B,SGM4581,SGM8941,SGM4582,SGM4583,SGM48521Q,SGM8704,SGM4588,SGMNQ59430,SGM8705,SGM4589,SGM8706,SGM8707,SGM8942,SGM8701,SGM8702,SGM8703,SGM12213A,SGM11210A,SGM61060,SGM2050C,SGM12UB1D2,SGM892B,SGM8276-4,SGM6510,SGM4573,SGM3001,SGM4574,SGM42513,SGM6514,SGM3005,SGM6513,SGM4578,SGM8276-2,SGM3002,SGM6512,SGM42622B,SGM8276-1,SGM3003,SGM6511,SGM4576,SGM8931,SGMOP17C,SGM8932,SGM8933,SGM6516,SGM12214A,SGM8934,SGM6515,SGM11210M,SGMNE20220,74AVC8T245,SGM3141B,SGM61030,SGM42403Q,SGM42553,SGM61032,SGM61031,74HC165,SGM62116,SGM8953-1,SGM62118,SGM8953-2,SGM62117,SGM8708,SGM8709,SGM4075-2,SGM3140B,SGM61040,SGM4075-1,SGM42544,SGM7300A,SGM7300B,SGM42541,SGM42540,SGM8951,SGM8952,SGM8710,SGM4590,SGM5200,SGM38045,SGM38042,SGM6533,SGM8711,SGM8712,SGM8955,SGM38046,SGM8956,SGM2053S,SGM8199L2,LM2904,SGM8199L1,SGM41002,SGM8968-4,SGM8968-2,LM2902,SGM8968-1,SGM8740,SGM8741,SGM8742,SGM2077A,SGM8743,SGM2077B,SGM8263-1,SGM8748,SGM8263-2,SGM8417-1,SGM8749,SGM12CB1A5,SGM8744,SGM40666B,SGM8745,SGM11104S,SGM40666A,SGM8746,SGM8747,SGM41513D,SGM41513A,SGM42561,SGM42560,SGM8957-1,SGM8957-2,SGM42562,SGM5208-14,SGM5223,SGM48018C,SGM11102F,SGM11102G,SGM41512A,SGM37603A,SGM8521,SGM8522,SGM11102S,SGM33685A,SGM5018,SGM33685B,SGM33685C,SGM8524,SGM8604-1,SGM11103E,SGM8604-5,SGM8193A3,SGM11103F,SGM8604-2,SGM8193A2,SGM48019C,SGM8604-3,SGM8193A1,SGM8193A0,SGM37604A,SGM8751,SGM11103S,SGM41007,SGM41008,SGM6332,SGM8750,FT2830P,SGM11212M,SGM41280,SGM41281,SGM41283,SGM5353-16,SGM37891A,SGM41285,SGM41286,SGM7SZ244S,SGM8542,SGM51652H8,SGM8543,SGM8301,SGM8544,SGM8302,SGM8545,SGM51652H4,SGM8541,SGM8429C-4,SGM8304,SGM8607-2,SGM37892A,SGM13003A,SGM8531,SGM8773,SGM8532,SGM8534,SGM8770,SGM8771,SGM8772,SGM8535,SGM8536,SGM8537,SGM12024A,SGM8538,SGM65230,SGM37893A,SGM65231,SGM65232,SGM8969-2,SGM8969-1,SGM13002A,SGM2035C,SGM7232,SGM9128YP,SGM41291,SGM2036S,74LVC1G32Q,SGM13001C,SGM13001B,74LVC138,SGM2581E,SGM8958-2,SGM41295,SGM13001A,SGM8958-1,SGM7222,SGM6132,SGM8554,SGM7223,SGM8555,SGM7224,SGM6130,SGM8556,SGM2581C,SGM8551,SGM7220,SGM2581A,SGM8552,SGM7226,SGM7227,SGM7228,SGM7229,SGM44599,SGM8581,SGM8713A-1,SGM8582,SGM6613A,SGM8584,SGM832B,SGM41282C,SGM832A,SGM8714B-1,SGM8924A,SGM811C,SGM5355-16,SGM7SZ19,74LVC1G125,SGM48535B,SGM89000,SGM7SZ14,SGM811B,SGM48535A,SGM48752X,SGM431VB,SGM2560A,SGM37603,SGM2560B,SGM6611C,SGM15CB1A4,SGM810B,SGM41280A,SGM8591,SGM8592,SGM48753X,SGM9203,SGM6612A,SGM8594,SGM8922A,SGM4T245,SGM48753,SGM48754,SGM48755,SGM48756,SGM51242R8,SGM48757,SCM40668,SGM813B,SGM48759,74AVC4T245,SGM8140,SGM8141,SGM48751,SGM449,SGM48752,SGMNQ07430,SGMPM21330,SGM48510,SGM458,SGM3785S,SGM37864,SGM61720,SGM459,SGM37863,SGM457,SGM8142,SGM452,SGM450,SGM451,SGM05UB1B3,SGM37862,SGM37861,SGM05CB1A8,SGM05CB1A7,SGM812B,SGM05CB1A4,74GTL2005,SGM25881,SGM447,SGM448,SGM446,SGM7SZ244,SGM8478-1C,SGM51242R4,SGM8139,SGM51242R2,SGM3705,SGM48536,SGM48537,SGM48538,SGM48539,SGM5351-16,SGM2588G,SGM2588E,SGM2588K,SGM3712,SGM3713,SGM2588C,SGM3710,SGM3711,SGM2588A,SGM48522,SGM48523,SGM48525,SGM48526,SGM48760,SGMNQ07440,SGM48520,SGM48521,SGM8557-5,SGM71XX,SGM706B,SGM460,SGM3701,SGM3700,SGM3727,SGM3741B,SGM3725,SGM3726,SGMOP07,SGM898,SGM899,SGM896,SGM897,SGM895,SGM4823,SGM2566B,SGM3735,SGM3732,SGM4822,SGM2566A,SGM3716,SGM3740B,SGM48544,SGM4806,SGM3717,SGM48545,SGM3714,SGM3715,SGM4809,SGM4807,SGM3718,SGM4808,SGM3719,74LVC157,SGM48780,SGM48540,SGM48541,SGM48542,SGM48543,SGM37898,SGM51652H,SGM51652D,SGM3720,SGM37891,SGM4812,SGM37892,SGM4810,SGM37895,SGM3749,SGM3747,SGM3748,SGM72204A,SGMNQ40430,SGM
SGMicro(圣邦微)-TI/ADI/ON产品对照表
型号- OPA335,OPA698,SGM8273-1AXN5,OPA2364,OPA330,SGM8955XN5G/TR,AD8605ARTZ,SGM724,LMV821M7 NOPB,SGM8199A3XC6G/TR,OPA2357,SGM80582XS8G,OPA2355,OPA2354,SN74LVC1G08DCKR,TPS61240,SGM8261-2,74LVC1G32GW,LMP2021MF/NOPB,AD8531ART,LM7301IM5 NOPB,OPA2350,SGM8094,MC33272ADR2G,SGM8091,SGM8092,SGM8093,SGM722,ADTL084,TLV3542,OPA376AIDCKR,TLV3541,LMC7660,SGM810-SXN3/TR,NCV33274ADR2G,OPA2170AIDGKR,AD8629ARMZ-REEL,SGM809-SXN3/TR,OPA364IDBVR,SN74LV4051,SGM8557-1XN5,TS321IDBVR,SGM8270-2XS8G/TR,TLV3544,SN74LVC1G00DCKR,IMP809T,IMP809S,IMP809M,SGM8770XS8G/TR,SGM8416-1,SGM8957-1XN5G/TR,SGM8416-2,TLV271IDBVR,ADM708SARZ,SGM8271BYN5G/TR,TPS73433DDCR,SGM809-RXN3L/TR,AF809N293MR-3,AD8091,SGM7SZ125YC5G/TR,SGM58031,AD8094,AD8093,AD8092,SGM8273-2,LT1797CS5#TRMPBF,SN74AHCT1G125D,SGM8273-4,OPA2365,SGM8273-1,SGM809-XXN3/TR,AME8500AEETAF31Z,74AVCH8T245PW,OPA376,SGM8557-3,LMV321IDBVR,SGM8557-1,SGM8557-2,LMH6611MKX/NOPB,SGM7SZ00YN5G/TR,SGM809-SXN3L/TR,AD8062,AD8061,SGM721XS/TR,OPA330AIDBVR,AD8063,SGM42609,AME8500AEETAF44Z,PT7M7810STEX,SGM7SZ08YN5G/TR,SGM8541XN5/TR,INA214B,SGM7SZ04YC5G/TR,LM358,SGM8957-2XMS8G/TR,TXB0104RUTR,NCS20074DTBR2G,SN74LVC1G3157DCKR,LMV324,TL343,OPA3355,SGM8270-2,SGM8270-4,OPA357,OPA2188,OPA354,OPA355,SGM61230,SGM8558-1,SGM8301YN5,NCS199A2SQT2G,OPA350,OPA4357,SGM8T245XTS24G/TR,OPA2171,OPA4354,SGM2205-3.3XKC3G/TR,SGM8210-1AXN5G/TR,OPA365,OPA4350,TSV321RILT,TLV4333,TL082IDR,AD8051,AD8055,AD8054,AD8053,LMV934MTX/NOPB,AD8052,LMV824DR2G,SGM721XN5/TR,SGM8255A-1XN5G/TR,SGM8274YTS14G/TR,SGM2040-3.3YUDH4G/TR,MC33202,UA78M33CKCS,LMV358,SN74LVC1G32DCKRE4,SGM2036-3.3YN5G/TR,OPA4170AIDR,SGM8557-1AXN5G,SGM8622XMS/TR,LP2980,MC33179DR2G,SGM809-1.63V,SGM8255A-2XS8G/TR,SGM8551XN5,TLV2171,SGM8740YN5,SGM8273-2XS,LM393,SGM8632C,SGM8273-1AXN5G/TR,ADM706SARZ,LMV822MMX/NOPB,ISL28290FBZ-T7,AD8615_6,TLV274IPWR,AD8666ARMZ-REEL,OPA172IDBVR,SGM8965,MC33178DR2G,SGM8604,MCP6004T-E/ST,TLC2272,LM258,SGM7SZ245XTS20G/TR,LMV393,TL082,SGM8965-2,SGM8965-1,INA199A1DCKR,MCP6561T-E/OT,SGM8957,SGM8959,SGM8955,OPA2320,TPS54218ARTE,LM2904,AD8614ARTZ-R2,SGM3749YTDI6G/TR,SGM811-SXKA4/TR,TPS61165,OPA2171AIDGKR,SGM4564YUQN12G/TR,LMC6482AIMX NOPB,TPS61160,SGMOP07EXS8G/TR,SGM8557-2XS8G/TR,MAX4239,SGM7SZ08YC5G/TR,SGM3157YC6/TR,TS321ILT,OPA2301,SGM8210-2XMS8G/TR,SN74LVC1G14DBVRG4,VIC5111-293BDI,TPS54202,SGM8552XMS8G/TR,TSZ122IST,ISL28177,STR8293-263BSI,OPA2335,TLV272IDGKR,MC74HC1G04DFT2G,OPA365AIDBVR,SGM8425AYN5G/TR,SGM8557-1AXN5G/TR,SGM8631,SGM8632,SGM8554XTS14G/TR,LSP2200CALS,AP7335-33WG-7,SGM7SZ14YC5G/TR,LM358AN NOPB,LSP2200CALR,SGM8634,NC7SZ08P5X,INA199B1DCKR,AD8538,TLV3201AIDBVR,SN74AVC2T244DQ,SGM8542,SGM8301,SGM8544,SGM8302,SGM8199A1XC6G/TR,INA199A3DCKR,SGM809-TXN3/TR,SGM8304,SGM8428,AD8668,NCS333SN2T1G,SGM8555-1XN5,SGM8631XN5/TR,SGM8959-1,SGM4556YXDO8G/TR,MC33272,SGM8652,SGM8199A2XC6G,SGM8653,TLV62565DBV,SGM8654,SGM8959-1XN5G/TR,SGM8655,125,SGM8770,NCS20072DR2G,SGM8651,AD8552,SGM8538,LMV824IPT,SN74AHCT245DWR,TLC272,TL064IDT,TLE2021,TLE2142,SGM8199A2,NCS2333DR2G,PT7M7809S,TP5552,SGM41298,SGM6011,LM7321MF/NOPB,SGM8210-2XS8G,SGM8556,SGM8957-2XS8G/TR,SGM2558BYS8G/TR,SGM8552,ISL28133FHZ-T7,OPA340UA,MAX9617AXT+T,SGM8557,SGM8558,IMP811SEUS-T,MCP664,MCP662,SGM6605-5.0YN6G/TR,ADN8834,INA199A2DCKR,NCV33274ADTBR2G,MCP661,SGM3209YS8G/TR,INA199B2DCKR,MC33074ADTBR2G,SGM8199A3XC6G,SN74LVC2244APWR,LM7322MME/NOPB,NL17SZ08DFT2G,MC33078,MCP651,MCP652,AD8628,OPA376AIDBVR,SGM8255-4XS14G/TR,SN74LVC1G125DC,ADA4891-1,LMV342MM NOPB,ADA4891-2,LMV710M5 NOPB,SN74AHC1G14DBVR,AD8510,NCS199A1SQT2G,SN74AVC8T245PWR,AD823,OPA4330AIPWR,74LVC1G08GW,TPH2502,TPH2501,TPH2504,ADA4891-4,LM2903MX,AD8605ARTZ-REEL7,AD8602,SGM8295-4XS14G/TR,AD8605,OPA4277UA,MC33172,SGM7SZ32YC5G/TR,LMC7101QM5/NOPB,SN74LVC1G14DCKR,SGM8210-1,SGM8210-2,TSZ121ILT,AIC809-29,TLV2333IDR,LMV611MF/NOPB,SGM8199A2XC6G/TR,SGM8740YN5G/TR,SGM8632CXMS8G/TR,NC7S04P5X,SGM8271AYN5G/TR,LM3526,OPA2197,SGM8958-1XC5G/TR,AD8665ARJZ-REEL,SGM7SZ244,SGM321,TLV2314IDGKR,SGM8251XS8G/TR,LM258DR2G,TPS61410,SGM8294YTS14G/TR,STR8210-293BSI,SGM80584,SGM8273-2XS8G/TR,AME8500AEETAF26Z,OPA177GS/2K5,LM4871,SGM8252A,SGM809-RXN3/TR,LMV824MX NOPB,SGM7SZ14YN5G/TR,TS507IYLT,SGM8270,LMH6643,SGM8271,LMH6644,SGM8273,LMH6642,MP2459,SGM3749YTN6G/TR,SGM80581,SGM80582,SGM8581XN5G/TR,TS321AILT,LMV822,SGM706B,TLV2372IDGKR,LMV722MMX-NOPB,NJM3403AV,ISL28130CHZ-T7,SN74LVC1G08DBVR,SGM8061,SGM8062,SGM8063,TP2412,SGM4871YS8/TR,OPA2171AIDR,LF353DR,LMV710,TLV333,SGM809-MXN3/TR,LM293ADR,PT7M7809STEX,SGM8965-1XN5G/TR,SGM8051,SGM8052,SGM8295,SGM8053,TPS72733,SGM8054,LMV842,AME8500AEETAF29Z,SGM8055,DRV8837DSGR,SGM708B,SGM8199A1XC6G,SN74AHC1G00DBVR,CY74FCT2245CTQ,SGM8965-1XN5,TS5A3157,MCP6004T-I/SL,SGM2300-ADJYN5G/TR,SGM48751YTS16G/TR,LMC7101AIM5 NOPB,ADA4807-1,LMP2022MAX/NOPB,TLV9062,CY74FCT2244ATQ,LMP7715MFX/NOPB,ADS1115,NCS20081SN2T1G
昱盛电子(Viva)音频放大器芯片和电源管理芯片选型指南
目录- 公司简介 产品概览 音频放大器 降压转换器 升压转换器 LED驱动器 DC/DC控制器 DC/DC控制器/音频放大器新品介绍 音频放大器芯片/电源管理芯片参考应用列表
型号- VA2120,VP2141,VP2140,- VA2205,VP3162,VP3481,VP3482,VP3681,VP3682,VP3881,VP3485,VP3882,VP3486,VA2205,VA2207,VA2208,VA2236,VA2110,VP2133,VA9105,VP3371,VP3375,VP3376,VP3379,VA2239,VA2102,VP2128,VP2123,VA2221,VA2101,VP3186,VP3187,VP3385,VP3188,VP3386,VA2228,VA2108,VA2213,VA9208,VA2012,VA2211,VP3471,VP3671,VA2221L,VP3475,VP3476,VP3675,VP3478,VP3676,VA2218,VA2219
SGMicro(圣邦微) SGM4871 数据手册
描述- 该资料介绍了SGM4871是一款专为便携式通信设备和手机等高需求应用设计的单端桥接音频功率放大器。它能够在4欧姆负载下提供高达2.4瓦的平均连续功率,并具有低功耗关断模式、热过载保护电路等特点。
型号- SGM4871YPS8/TR,SGM4871YS8,SGM4871,SGM4871YPS8,SGM4871YS8/TR
【应用】圣邦微音频功率放大器SGM4890用于家用扫地机机器人,关断电流仅有0.01μA
客户在设计一款扫地机时,需要一颗语音功放芯片来驱动扬声器,需要小尺寸,低功耗,功率不超过1W。本文推荐SGMICRO推出的的语音功放芯片SGM4890,支持低功耗关断模式,关断模式下的电流典型值也仅有0.01μA;具有内部热关断保护功能。
【应用】AB类音频功率放大器SGM4871,5V下失真度仅为10%,适用于音频设备的功率放大设计
圣邦微的AB类音频功率放大器SGM4871,能够为4Ω负载提供2.4W的连续平均功率,在5V电池电压下的失真度仅为10%,适用于音频设备的功率放大设计
【选型】AB类音频功率放大器SGM4871可pin to pin替换 LM4871,库存丰富
圣邦微的AB类音频功率放大器SGM4871,能够为4Ω负载提供2.4W的连续平均功率,在5V电池电压下的失真度仅为10%,功能上可完美替代LM4871
智能音箱应用指南(Smart Speaker Application Guide)
描述- 该资料介绍了多种类型的元器件,包括叠层片式铁氧体磁珠、音频磁珠、功率电感、陶瓷电感、天线、平衡转换器、LC滤波器、热敏电阻器、压敏电阻器等。这些元器件广泛应用于智能音箱、CPU、电池、AC-DC充电器、LCD面板、触屏控制、Class-D功放等领域。
型号- SPH系列,MZA SERIES,TPP系列,MPH,MCL SERIES,SDNT系列,HQ,SPH,PZ,TWP SERIES,EPZ,SLFB系列,MWSA系列,SLDA系列,SLFD系列,HZ,SDNT SERIES,WPN,SZ系列,SDWL-C,SDMM,SVMH,SLFL系列,SWPA SERIES,SLDA SERIES,SDVL系列,MCL系列,GZ系列,UPZ,SDV系列,WPN SERIES,HQ SERIES,SDV SERIES,MWSD-C,SDV,UPZ SERIES,SLFB SERIES,SLFD SERIES,SVMH系列,TWP,WPN系列,MPH系列,SLDA,SWPA系列,MWSD-C SERIES,PZ系列,MWTA,MZA,MWTA系列,GZ SERIES,UPZ系列,SDVL SERIES,TWP系列,HZ系列,SDMM SERIES,SLBL,MZA系列,HPZ SERIES,SLFL SERIES,EPZ系列,SDWL-C SERIES,MWTA SERIES,EPZ SERIES,MWSD-C系列,HPZ,SVMH SERIES,TPP,PZ SERIES,SDCL,MWSA,SLBL系列,SDVL,HPZ系列,SDCL SERIES,SZ,SDWL-C系列,SLBL SERIES,TPP SERIES,MPH SERIES,SLFD,SDNT,SWPA,HZ SERIES,SLFB,GZ,HQ系列,MWSA SERIES,MCL,SZ SERIES,SDMM系列,SDCL系列,SLFL,SPH SERIES
【应用】AB类音频功率放大器SGM4871YPS8应用于楼宇门口机,超低功耗关断模式下ISD=0.07μA
笔者设计的一款基于珠海数字动力S1平台的楼宇门口机,采用圣邦微推出的AB类音频功率放大器SGM4871YPS8驱动8Ω负载喇叭,实现楼宇对讲功能。SGM4871YPS8不需要输出耦合电容器、自举电容器或缓冲网络,超低功耗关断模式下功耗低,ISD=0.07μA(典型值),有利于节约系统功耗;在5V下失真度仅为10%(f = 1kHz,1.5W,8Ω负载),适用于音频设备的功率放大设计。
你好,我现在应用一款音频功率放大器,型号是SGM4895,有一些问题想咨询下,①音频编解码芯片声道输出端 隔直电容还需要吗(在放大器输入端有一个390nF的电容,是否可以省掉音频编解码器件的输出电容);②我们应用在人脸识别门禁机上面,请问给该功放芯片供电的话用3.3V能否满足一般的应用需求呢,看手册是5V供电的话,可以输出到1.3W,3.3V供电输出大约在0.8W;③再请教下一个用在8欧姆喇叭的TVS管的型号,谢谢
采用圣邦微SGM4895设计音频功率放大器可参考datasheet的典型应用电路,有详细的电路设计,可以采用3.3V供电,供电范围支持2.5-5.5V。喇叭使用TVS管推荐采用littelfuse的SP1002-02,参考以下链接:Littelfuse(力特)TVS Diode Arrays (SPA® Diodes) General Purpose ESD Protection - SP1002 Series SP1002 Series 5pF 8kV Bidirectional TVS Array 数据手册
带关断模式的SGM4871 2.4W立体声音频功率放大器
描述- SGM4871是一款2.4W立体声音频功率放大器,适用于便携式设备。它可在2.5V至5.5V的供电电压下工作,提供高达2.4W的输出功率(在4Ω负载和10%的总谐波失真加噪声条件下)。该芯片具有低功耗关断模式和热过载保护功能。
型号- SGM4871YPS8/TR,SGM4871,SGM4871YS8/TR
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提供语音芯片、MP3芯片、录音芯片、音频蓝牙芯片等IC定制,语音时长:40秒~3小时(外挂flash),可以外挂TF卡或U盘扩容。
最小起订量: 1pcs 提交需求>
Ignion可支持多协议、宽频段的物联网天线方案设计,协议:Wi-Fi、Bluetooth、UWB、Lora、Zigbee、2G、3G、4G、5G、CBRS、GNSS、GSM、LTE-M、NB-IoT等,频段范围:400MHz~10600MHz。
最小起订量: 2500 提交需求>
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