【应用】国产4路低噪声轨对轨运放SGM8273助力工业大功率电源开发，增益带宽高达4MHz
客户的产品设计中，有国产替代需求。输入输出电流通过采样后，进行输出信号放大、ADC转换后进入MCU，实现输入输出电流实时检测。当输入输出电流异常，MCU会下发关机信号，从而保护电路中的功率器件。电流检测信号的应用中，需要用到多路的低噪声、高精度、高压运放来处理模拟小信号，客户目前选用的需求是：低供货渠道风险和成本，需要国产化替代，本文推荐圣邦微电子（SGMICRO）的4路低噪声轨对轨运放SGM8273用于工业大功率电源，客户测试性能满足条件。
下表是SGM8273-4的性能参数：
由上图可知：
1、SGM8273-4支持单双电源宽压供电，可在±1.65V至±18V双电源或3.3V至36V单电源下工作；
2、SGM8273-4增益带宽高达4MHz，即使是小信号，也能提升放大能力；
3、ESD方面，SGM8273-4在人体模型条件下达到6kV HBM，器件稳定性及安全性更高；
4、SGM8273-4的输入失调电压只有0.5~1mV，这使得SGM8273-4可以降低小信号的放大误差；
典型应用电路：
外形封装对比：
作为一个高精度运放，SGM8273-4无论在带宽、输入失调电压、压摆率等参数还是ESD的表现都很优秀，非常适合用于工业大功率电源。
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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,"SGM8255A-1XN5G/TR SGM8425AYN5G/TR",SN74LVC1G14DBVRG4,VIC5111-293BDI,TPS54202,SGM8552XMS8G/TR,TSZ122IST,ISL28177,STR8293-263BSI,OPA2335,TLV272IDGKR,MC74HC1G04DFT2G,OPA365AIDBVR,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
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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
SGMICRO放大器选型表
专用运算放大器，高输出电流400mA，低功耗1.1μA；高速运算放大器，500MHz增益带宽，高压摆率265V/μs；高精度运算放大器，失调电压低至5μV，低温漂0.011μV/℃；电流检测放大器，高共模电压105V，高共模抑制比140dB；低噪声运算放大器，低噪音1.6nV/√Hz，低失调电压8.5mV；微功耗运算放大器，最低功耗低至350nA，1\2\4路，轨至轨输入输出；低功耗运算放大器，功耗低至2.5μA，最大工作电压36V
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产品型号
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品类
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CH
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SHDN
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Vᴄᴄ(Min)(V)
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Vᴄᴄ (Max)(V)
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Vᴏs(mV)
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Iq/CH(μA、nA、mA)
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Iʙ(pA)
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GBP(MHz、kHz)
|
SR(V/ms、V/μs)
|
Eɴᴏɪsᴇ(nV/√Hz、μVᴘᴘ)
|
Package
|
|
SGM8545
|
低功耗运算放大器
|
1
|
N
|
2.1
|
5.5
|
3.5
|
48μA
|
0.5
|
1.1MHz
|
520V/ms
|
27nV/√Hz
|
SOT-23-5
|
选型表 - SGMICRO 立即选型
SGM8273-1/SGM8273-2/SGM8273-4 Low Noise, High Precision, High Voltage, Rail-to-Rail I/O Operational Amplifiers
型号- SGM8273-1AXN5G/TR,SGM8273-1BXN5G/TR,SGM8273-2XS8G/TR,SGM8273-1XS8G/TR,SGM8273-4XS14G/TR,SGM8273-2,SGM8273-4,SGM8273-1XMS8G/TR,SGM8273-1
SGMicro（圣邦微）SGM8273-1/SGM8273-2/SGM8273-4低噪声,高精度,高压,轨到轨I/O运算放大器数据手册
描述- SGM8273-1/SGM8273-2/SGM8273-4 Low Noise, High Precision, High Voltage,Rail-to-Rail I/O Operational Amplifiers
型号- SGM8273-1AXN5G/TR,SGM8273-1BXN5G/TR,SGM8273-1XS8G/TR,SGM82731XS8,SGM8273-4XS14G/TR,SGM8273-1BXN5G,SGM8273-1XMS8G/TR,SGM82732XS8,SGM82731XMS8,SGM8273-2XS8G/TR,SGM82734XS14,SGM8273-2,SGM8273-1AXN5G,SGM8273-4,SGM8273-1
【产品】6V/μs高压摆率的轨到轨I/O运算放大器SGM8273
圣邦微电子（SGMICRO）推出了一系列轨到轨输入和输出运算放大器——SGM8273-1,SGM8273-2和SGM8273-4。它们分别是单通道、双通道和四通道运算放大器，可以提供宽输入共模电压范围和输出电压摆幅。它们具有低噪声、高压摆率、低输入偏置和偏移电流、低失调电压和低失调电压温度系数的优点。在Vs=±18V, RL=2kΩ情况下在整个工作温度范围内的输出电压摆幅最大值为550mV。
新产品 发布时间 : 2018-12-07
可pin to pin 替代TL074，大量库存国产四通道运算放大器SGM8273-4
圣邦微的四通道运算放大器，SGM8273-4，其低噪声，高精度，支持轨到轨输出的优势，能完美pin to pin 替换TI的TL074
器件选型 发布时间 : 2018-12-19
SGMicro（圣邦微） SGM8273-1/SGM8273-2/SGM8273-4轨到轨I/O运算放大器官方数据手册
描述- 本资料描述SGM8273-1 / SGM8273-2 / SGM8273-4低噪声，高精度，高电压轨到轨I/O运算放大器相关信息。
型号- SGM8273-1AXN5G/TR,SGM8273-1BXN5G/TR,SGM8273-1XS8G/TR,SGM82731XS8,SGM8273-4XS14G/TR,SGM8273-1XMS8G/TR,SGM82731XMS8,SGM8273-2XS8G/TR,SGM82734XSG/TR,SGM8273-2,SGM8273-4,SGM8273XS8,SGM8273-1,SGM8283-2
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提供辐射发射测试、传导发射预测试、EMI噪声频率扫描服务。消费电子辐射发射预测试频率范围30MHz-1GHz、 车载电子9KHz-3GHz，并针对问题给出EMC整改方案。支持到场/视频直播测试，资深专家全程指导。
实验室地址： 深圳 提交需求>
可加工PCB层数：4~32层，加工板材：多层板/HDI板/FR4板/高频板/高速板/高温板/铜基板/铝基板/陶瓷基板/软硬结合板，成品尺寸：3~1100mm，板厚：0.15-80mm，最小孔径：0.1mm，铜厚：最高14oz。
最小起订量： 1 提交需求>
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