ۉڇᇸĂֶݴ18࿋ ADCൻۯഗ ADA4941-1 ۉڇᇸຕ֑णဣཥ ᅏഗᅏ ࡗײ੦ ۉࠃۉဣཥ ᅅଐᅏഗ 1 8 IN REF 2 7 DIS V+ 3 6 V– OUT+ 4 5 OUT– 1 –65 –70 –75 VO = 6V p-p –80 –85 –90 –95 –100 –105 –110 VO = 2V p-p –115 –120 HD2 HD3 –125 –130 –135 –140 0.1 HD3 HD2 1 10 100 FREQUENCY (kHz) 1000 05704-045 ᆌᆩ FB –60 DISTORTION (dBc) ܋ڇገֶݴገ࣑ഗ ڦ၍Ⴀ܈ ! ฿ኈǖ−110 dBc(100 KHzLjVOdm = 2 Vރރኵ) گሯำǖ10.2 nV/√Hz(ችࢇڟ܋LjG = 2) टࡼࠀگǖ2.2 mA(3 Vۉᇸ) ߛፆੇǖ24 MΩ ᆩࢽۙሺᅮ ߛǖ−3 dBྺټ31 MHz (G = +2) 0.005%ॺ૬้क़ǖ300 nsDŽ2 VօDž گ฿ۙǖ0.8 mV(ፌٷኵ)(ችࢇڟ܋LjG = 2) ࡆࡆڟ ্ᆩ༬Ⴀ ۉᇸۉუྷݔǖ2.7 V12 V ֑ᆩবูक़ڦ3 mm x 3 mm LFCSPހጎ 05704-001 ࠀీ ༬Ⴀ 2. փཞူ܈ޗ฿ኈᇑೕ୲࠲ڦဣ ߁ຎ ADA4941-1ᅃࡼࠀگĂگሯำֶݴൻۯഗLjᆩᇀൻۯ ࠀࡼ௺ߌဣཥዐፌߛ18࿋ڦADCă֑ᆩᅟᇀ๑ᆩ܋ڇڦ ገֶݴದዃLjႴྔևᇮॲ৽ీइڥሺᅮྺ2ሺेۉፆݒ ઍྪஏՍํ၄ٷᇀ2ڦሺᅮLjཞ้༵ࠃൻݴߛۯՐ୲ ADCႴگڦ฿ኈࢅߛ႑ሯԲ(SNR)ڪዘᄲ༬Ⴀă ADA4941-1ਏᆶۉუ֑(ݔᆩ5 Vۉڇᇸ้0 V3.9 V)Ă ࡆࡆڟĂߛፆੇࢅᆩࢽۙሺᅮLjᆩᇀൻۯԈ ઔۉࠃۉยԢࢅۉڇᇸຕ֑णဣཥ߳ڪዖࡼࠀگᆌᆩ ዐۉڇڦᇸĂֶݴADCă ADA4941-1ݥࢇൻۯAD7687ĂAD7690ࢅAD7691ڪ16 ࿋ࢅ18࿋PulSAR® ADCă ADA4941-1֑ᆩADIࠅິڦጆᆶپܾڼXFCB߾ᅝሰLj๑ ٷݣഗᅜሞۉگᇸୁۉཉॲူํ၄18࿋Ⴀీă AD4941-1༵ࠃ8ᆅগၭ႙LFCSPހጎࢅ8ᆅগՔጚSOICހ ጎLj߾ۨܮፕ࿒ྺྷݔ܈−40°C+125°Cકቛ߾ᄽ࿒ݔ܈ ྷă Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006–2010 Analog Devices, Inc. All rights reserved. ADIዐ࿔Ӳຕ֩ᆈ࿔Ӳຕ֩ڦᅳ࿔Lj൩ଌᅳዐీ٪ሞڦᇕჾፇኯईᅳٱဃLjADIփܔᅳዐ٪ሞֶڦᅴईᆯׂُิٱڦဃሴăසႴඓණඪࢆَᇕڦጚඓႠLj൩֖ADI༵ࠃ ڦፌႎᆈ࿔Ӳຕ֩ă ADA4941-1 ణ ༬Ⴀ ................................................................................................... 1 ! ۉუሯำ ....................................................................... 17 ᆌᆩ ................................................................................................... 1 ! ೕ୲ၚᆌᇑԿ࣍ሺᅮ .......................................................... 19 ࠀీ ........................................................................................... 1 ᆌᆩ ................................................................................................. 20 ߁ຎ ................................................................................................... 1 ! ߁ຎ ......................................................................................... 20 Ⴊ۩૦๏ ........................................................................................... 2 ! ๑ᆩREFᆅগ ........................................................................ 20 रຍࡀ߭ ........................................................................................... 3 ! ాևݒઍྪஏࠀࡼ .............................................................. 20 ਨܔፌۨܮٷኵ ............................................................................. 6 ! ্ᆩ༬Ⴀ ................................................................................ 20 ! ඤፆ ........................................................................................... 6 ! ཁे3टۅSallen-Key୳հഗ .............................................. 21 ESDয়ߢ ................................................................................... 6 ! ൻۯAD7687 ADC ................................................................ 22 ᆅগದዃࢅࠀీ௮ຎ ..................................................................... 7 −2ሺᅮದዃ ........................................................................... 22 ۆ႙߾ፕ༬Ⴀ .................................................................................. 8 ྔႚ٫ ........................................................................................ 23 ߾ፕᇱ ........................................................................................ 15 ! ! एԨ߾ፕᇱ ....................................................................... 26 ! ୁဃֶऺ໙ ....................................................................... 16 Ⴊ۩૦๏ 20093ሆ—Ⴊ۩Ӳ0Ⴊ۩ӲA ߸߀ሺᅮဃֶᅎ֖ຕ)1* ....................................................... 3 ߸߀ሺᅮဃֶᅎ֖ຕ)2* ....................................................... 4 ߸߀ሺᅮဃֶᅎ֖ຕ)3* ....................................................... 5 ߸ႎྔႚ٫ ................................................................................ 23 20064ሆ—Ⴊ۩Ӳ0ǖ؛๔Ӳ Rev. B | Page 2 of 24 ۩ࠔኸళ ................................................................................ 23 ADA4941-1 रຍࡀ߭! ݥأଷᆶຫLjTA = 25°CLjVS = 3 VLjOUT+থFB (G = 2)LjRL, dm = 1 kΩLjREF = 1.5 Vă 1 ֖ຕ ۯༀႠీ -3 dBټ ! ࡗൻ࣬ް้क़ ! უӦ୲ 0.005%ॺ૬้क़ ሯำ/฿ኈႠీ ၿհ฿ኈ RTOۉუሯำ ୁۉሯำ ୁႠీ! ! ֶݴ฿ۙۉუ! ! ֶݴ฿ۙۉუᅎ! ! ܋ڇ฿ۙۉუ! ! ܋ڇ฿ۙۉუᅎ! ! ೋዃ!ୁۉ ! ฿ۙ!ୁۉ ! ሺᅮ! ! ሺᅮဃֶ! ! ሺᅮဃֶᅎ! ༬Ⴀ ۉፆ ۉඹ ࠌఇۉუྷݔ ࠌఇᅞԲ(CMRR) ༬Ⴀ! ! ۉუӦ!ޗ ! !ୁۉ ! ඹႠሜൻ!ۯ ۉᇸ ! ߾ፕྷݔ ! ৢༀୁۉ ! ৢༀ্—ୁۉᆩ ! ۉᇸᅞԲ(PSRR) +PSRR −PSRR ্ᆩDŽਸ࠲ࠀీDž DISۉუ DISୁۉ ཉॲ! ፌၭኵ! ۆ႙ኵ! VO = 0.1 Vރރኵ VO = 2.0 Vރރኵ +࣬ް/−࣬ް VO = 2 Vօ VO = 2 Vރރኵօ 21 4.6 fC = 40 kHz, VO = 2 Vރރኵ, HD2/HD3 fC = 100 kHz, VO = 2 Vރރኵ, HD2/HD3 fC = 1 MHz, VO = 2 Vރރኵ, HD2/HD3 f = 100 kHz f = 100 kHz ٷݣഗA1ईٷݣഗA2 INࢅREF INࢅREF (+OUT − −OUT)/(IN − REF) 1.98 −1 30 6.5 320/650 22 300 MHz MHz ns V/μs ns −116/−112 −101/−98 −75/−71 10.2 1.6 dBc dBc dBc nV/√Hz pA/√Hz 0.2 1.0 0.1 0.3 3 0.1 2.00 1 INࢅREF INࢅREF ፌٷኵ! ڇ࿋ 0.8 0.4 4.5 2.01 +1 5 24 1.4 CMRR = VOS, dm/VCM, VREF = VIN, VCM= 0.2 V1.9 V, G = 4 0.2 81 ߳܋ڇLjG = 4 ±2.90 20%ࡗ؋LjVO, dm = 200 mVރރኵ 105 MΩ pF V dB ±2.95 25 20 V mA pF 1.9 2.7 2.2 10 PSRR = VOS, dm/ΔV S, G = 4 ্ᆩLjDIS = ߛ ๑ీLjDIS = گ ্ᆩLjDIS = ߛ ๑ీLjDIS = گ ਸഔ้क़ ࠲Կ้क़ Rev. B | Page 3 of 24 86 86 mV μV/°C mV μV/°C μA μA V/V % ppm 12 2.4 16 V mA μA 100 110 dB dB ≥1.5 ≤1.0 5.5 4 0.7 30 V V μA μA μs μs 8 6 ADA4941-1 ݥأଷᆶຫLjTA = 25°CLjVS = 5 VLjOUT+থFB (G = 2)LjRL, dm = 1 kΩLjREF = 2.5 Vă Table 2. ֖ຕ ۯༀႠీ -3 dBټ ! ࡗൻ࣬ް้क़ ! უӦ୲ 0.005%ॺ૬้क़ ሯำ/฿ኈႠీ ! ၿհ฿ኈ RTOۉუሯำ ! ୁۉሯำ ୁႠీ ! ֶݴ฿ۙۉუ ! ֶݴ฿ۙۉუᅎ ! ܋ڇ฿ۙۉუ ! ܋ڇ฿ۙۉუᅎ ! ೋዃୁۉ ! ฿ۙୁۉ ! ሺᅮ ! ሺᅮဃֶ ! ሺᅮဃֶᅎ ༬Ⴀ ! ۉፆ ! ۉඹ ! ࠌఇۉუྷݔ ! ࠌఇᅞԲ(CMRR) ༬Ⴀ ! ۉუӦޗ ! ୁۉ ! ඹႠሜൻۯ ۉᇸ ߾ፕྷݔ ৢༀୁۉ ৢༀ্—ୁۉᆩ ۉᇸᅞԲ(PSRR) +PSRR -PSRR ্ᆩDŽਸ࠲ࠀీDž DISۉუ DISୁۉ ཉॲ! ፌၭኵ! ۆ႙ኵ! VO = 0.1 Vރރኵ VO = 2.0 Vރރኵ +࣬ް/-࣬ް VO = 2 Vօ VO = 6 Vރރኵօ 22 4.9 fC = 40 MHz, VO = 2 Vރރኵ, HD2/HD3 fC = 100 MHz, VO = 2 Vރރኵ, HD2/HD3 fC = 1 MHz, VO = 2 Vރރኵ, HD2/HD3 f = 100 kHz f = 100 kHz ٷݣഗA1ईٷݣഗA2 INࢅREF INࢅREF (+OUT - -OUT)/(IN - REF) 1.98 −1 31 7 200/600 24.5 610 MHz MHz ns V/μs ns −118/−119 −110/−112 −83/−73 10.2 1.6 dBc dBc dBc nV/√Hz pA/√Hz 0.2 1.0 0.1 0.3 3 0.1 2 1 INࢅREF INࢅREF ፌٷኵ! ڇ࿋ 0.8 0.4 4.5 2.01 +1 5 24 1.4 CMRR = VOS, dm/VCM, VREF = VIN,VCM = 0.2 V3.9 V, G = 4 0.2 84 ߳܋ڇLjG = 4 ±4.85 20%ࡗ؋LjVO, dm = 200 mVރރኵ 106 MΩ pF V dB ±4.93 25 20 V mA pF 3.9 2.7 2.3 12 PSRR = VOS, dm/ΔV S, G = 4 ্ᆩLjDIS = ߛ ๑ీLjDIS = گ ্ᆩLjDIS = ߛ ๑ీLjDIS = گ ਸഔ้क़ ࠲Կ้क़ Rev. B | Page 4 of 24 87 87 mV μV/°C mV μV/°C μA μA V/V % ppm 12 2.6 20 V mA μA 100 110 dB dB ≥1.5 ≤1.0 5.5 4 0.7 30 V V μA μA μs μs 8 6 ADA4941-1 ݥأଷᆶຫLjTA = 25°CLjVS = ±5 VLjOUT+থFB (G = 2)LjRL, dm = 1 kΩLjREF = 0 Vă 3 ֖ຕ ۯༀႠీ -3 dBټ ! ࡗൻ࣬ް้क़ ! უӦ୲ 0.005%ॺ૬้क़ ሯำ/฿ኈႠీ ! ၿհ฿ኈ RTOۉუሯำ ! ୁۉሯำ ୁႠీ! ! ֶݴ฿ۙۉუ! ! ֶݴ฿ۙۉუᅎ! ! ܋ڇ฿ۙۉუ! ! ܋ڇ฿ۙۉუᅎ! ! ೋዃ!ୁۉ ! ฿ۙ!ୁۉ ! ሺᅮ! ! ሺᅮဃֶ! ! ሺᅮဃֶᅎ! ༬Ⴀ ! ۉፆ ! ۉඹ ! ࠌఇۉუྷݔ ! ࠌఇᅞԲ(CMRR) ༬Ⴀ! ! ۉუӦ!ޗ ! !ୁۉ ! ඹႠሜൻ!ۯ ۉᇸ ! ߾ፕྷݔ ! ৢༀୁۉ ! ৢༀ্—ୁۉᆩ ! ۉᇸᅞԲ(PSRR) +PSRR −PSRR ্ᆩDŽਸ࠲ࠀీDž DISۉუ DISୁۉ ཉॲ! ፌၭኵ! ۆ႙ኵ! ፌٷኵ! ڇ࿋ VO = 0.1 Vރރኵ VO = 2.0 Vރރኵ +࣬ް/−࣬ް VO = 2 Vօ VO = 12 Vރރኵօ 23 5.2 32 7.5 200/650 26 980 MHz MHz ns V/μs ns −118/−119 −109/−112 −84/−75 10.2 1.6 dBc dBc dBc nV/√Hz pA/√Hz fC = 40 kHz, VO = 2 Vރރኵ, HD2/HD3 fC = 100 kHz, VO = 2 Vރރኵ, HD2/HD3 fC = 1 MHz, VO = 2 Vރރኵ, HD2/HD3 f = 100 kHz f = 100 kHz ٷݣഗA1ईٷݣഗA2 INࢅREF INࢅREF (+OUT − −OUT)/(IN − REF) 1.98 −1 0.2 1.0 0.1 0.3 3 0.1 2 1 INࢅREF INࢅREF 0.8 0.4 4.5 2.01 +1 5 24 1.4 CMRR = VOS, dm/VCM, VREF = VIN, VCM= -4.8 V+3.9 V, G = 4 ߳܋ڇLjG = 4 −4.8 85 VS − 0.25 20%ࡗ؋LjVO, dm = 200 mVރރኵ 105 MΩ pF V dB VS ± 0.14 25 20 V mA pF +3.9 2.7 2.5 15 PSRR = VOS, dm/ΔV S, G = 4 ্ᆩLjDIS = ߛ ๑ీLjDIS = گ ্ᆩLjDIS = ߛ ๑ీLjDIS = گ ਸഔ้क़ ࠲Կ้क़ Rev. B | Page 5 of 24 87 87 mV μV/°C mV μV/°C μA μA V/V % ppm 12 2.7 26 V mA μA 100 110 dB dB ≥ −3 ≤ −4 7 4 0.7 30 V V μA μA μs μs 10 6 ADA4941-1 ਨܔፌۨܮٷኵ 4 ֖ຕ ۨܮኵ ۉᇸۉუ ࠀࡼ ٪ئ࿒ྷݔ܈ ߾ፕ࿒ྷݔ܈ ᆅগ࿒ࡰ(܈থ10௱) ࿒ 12 V ९3 −65°C+125°C −40°C+85°C 300°C 150°C ጀᅪLjגฉຎਨܔፌۨܮٷኵీࣷڞዂഗॲᆦ৳Ⴀ ࣋ăኄኻۨܮፌኵLjփภतഗॲሞኄၵईඪࢆഄཉॲ ူגԨरຍࡀ߭ኸՔీࠀڦႠ֡ፕăሞਨܔፌܮٷ ۨኵཉॲူ߾ፕࣷᆖၚഗॲڦ੍Ⴀă ඤፆ θJAኍܔፌֶཉॲLjनଭഘୁ้ഗॲࡰথሞۉୟӱฉ)नഄ ࡰಎࡰথڟPCB௬ฉࡰڦಎ)ැᆩ*LjഄዐPCBথ੨ᇑཟ ֫ඤ၎ă ހጎ(ࡼࠀڦPD)ྺৢༀࠀࡼᇑހጎዐᆶڦሜൻۯ ڞዂࡼࠀڦኮࢅLjܸৢༀࠀࡼሶྺۉᇸᆅগኮक़ۉڦუ (VS)ױᅜৢༀ(ୁۉIS)ăሜൻۯڞዂࡼࠀڦൽਦᇀਏ༹ ᆌᆩăܔᇀ߳Ljሜൻۯڞዂڪࡼࠀڦᇀሜୁۉ ױᅜഗॲాڦ၎࠲უইăᆶሜڪࡼࠀڦᇀ߳ሜࠀࡼ ڦጺࢅăฉຎऺ໙ዐՂႷ๑ᆩRMSۉუࢅୁۉă ഘୁሺഽොඤLjܸٗᆶၳইگθJAăُྔLj߸ূܠຌথ ᇑূຌጽ၍ހڦጎᆅগĂཚĂۉࢅںᇸ֫থةLjኄཞᄣ ইگθJAăހጎڹևࡰڦಎՂႷࡰথڟᇑཟ֫ඤ၎ ڦPCBথ੨ฉࡰڦಎLjܸٗํ၄ኸۨڦθJAă 3၂๖ሞJEDECՔጚ4֫ӱฉLj8ᆅগSOIC(126°C/W)ࢅ8 ᆅগLFCSP(83°C/W)ଇዖހጎڦፌٷҾඇࠀࡼᇑ࣍ৣ࿒܈ ࠲ڦဣăLFCSPڹڦևࡰಎՂႷࡰথڟᇑPCB֫ඤ၎ڦ ࡰಎăθJAኵྺৎຼኵă 2.5 θJA 126 83 θJC 28 19 ڇ࿋ qC/W qC/W ፌ!ࡼࠀٷ ADA4941-1ހጎాڦፌٷҾඇࠀࡼ၌ᇀ၎ᆌڦႊೌ࿒ )TJ*ߛืڦ൧ăڟٳի૱ࣅገՎ࿒܈150°Cፑᆸ้Lj໒ଙ ڦ༬Ⴀࣷ݀ิ߀Վăन๑ኻሡ้ࡗגኄᅃ࿒܈၌ኵᄺᆶ ీ߀Վހጎܔႊೌፕᆩڦᆌ૰Ljܸٗᆦ৳ႠںገՎ ADA4941-1֖ڦຕႠీă้क़ࡗג150°Cڦ࿒ࣷڞዂႊ ೌഗॲ၄ՎࣅLjᅺܸీሰࠤׯቱă 2.0 LFCSP 1.5 1.0 SOIC 0.5 0 –40 –20 0 20 40 60 80 AMBIENT TEMPERATURE (°C) 3. 4֫ӱፌࡼࠀٷᇑ࿒࠲ڦ܈ဣ ESDয়ߢ! ESD(ৢߌ௺)ۉݣۉഗॲăৢࢁۉۉඹᅟሞට༹ࢅ֪ยԢฉેओLjߛٳ4000 VLjժీሞுᆶִ ਥڦ൧ူۉݣă࠶ԨׂਏᆶጆᆩESDԍࢺۉୟLjڍሞᇜీߛڟଉৢ้ۉݣۉLjీࣷ݀ิᆦ৳ Ⴀഗॲ࣋ăᅺُLjॺᅱ֑ൽڦړESDٯݔݞแLjᅜՆ௨ഗॲႠీူইईࠀీෟ฿ă Rev. B | Page 6 of 24 100 120 05704-002 ހጎૌ႙! 8-Lead SOIC on 4-Layer Board 8-Lead LFCSP with EP on 4-Layer Board MAXIMUM POWER DISSIPATION (W) 5. ඤፆ ADA4941-1 FB 1 8 IN REF 2 7 DIS V+ 3 6 V– OUT+ 4 5 OUT– 05704-101 ᆅগದዃࢅࠀీ௮ຎ! NOTES 1. THE EXPOSED PAD IS NOT ELECTRICALLY CONNECTED TO THE DEVICE. IT IS TYPICALLY SOLDERED TO GROUND OR A POWER PLANE ON THE PCB THAT IS THERMALLY CONDUCTIVE. 4.ᆅগದዃ 6. ᆅগࠀీ௮ຎ ᆅগՊࡽ! 1 2 3 4 5 6 7 8 ᆅগఁ! FB REF V+ OUT+ OUT− V− DIS IN ௮ຎ! ݒઍ एጚۉუ ኟۉᇸ! ཞ၎ ݒ၎ ۉᇸ ্ᆩ ! Rev. B | Page 7 of 24 ADA4941-1 ۆ႙߾ፕ༬Ⴀ! VS = +5V VS = ±5V 10 1000 100 FREQUENCY (MHz) NORMALIZED CLOSED-LOOP GAIN (dB) +25°C –40°C 1000 100 FREQUENCY (MHz) 05704-005 NORMALIZED CLOSED-LOOP GAIN (dB) +85°C 10 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 0.1 NORMALIZED CLOSED-LOOP GAIN (dB) RL, dm = 5kΩ 10 100 FREQUENCY (MHz) 1000 05704-006 NORMALIZED CLOSED-LOOP GAIN (dB) RL, dm = 1kΩ 1 VO, dm = 6V p-p +85°C –40°C +25°C 1 100 10 9. փཞ࿒ٷڦူ܈႑ࡽೕ୲ၚᆌ VO, dm = 0.1V p-p RL, dm = 500Ω 100 10 FREQUENCY (MHz) 6. փཞ࿒ڦူ܈ၭ႑ࡽೕ୲ၚᆌ 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 1 8. փཞۉᇸူٷڦ႑ࡽೕ୲ၚᆌ VO, dm = 0.1V p-p 1 VS = +5V VO, dm = 6V p-p FREQUENCY (MHz) 5. փཞۉᇸူڦၭ႑ࡽೕ୲ၚᆌ 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 VS = ±5V VO, dm = 12V p-p 05704-008 1 VS = +3V VO, dm = 2V p-p 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 0.1 VO, dm = 6V p-p RL, dm = 1kΩ RL, dm = 500Ω RL, dm = 5kΩ 1 FREQUENCY (MHz) 10. փཞፆႠሜူٷڦ႑ࡽೕ୲ၚᆌ 7. փཞፆႠሜူڦၭ႑ࡽೕ୲ၚᆌ Rev. B | Page 8 of 24 10 05704-009 VS = +3V 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 0.1 05704-007 VO, dm = 0.1V p-p NORMALIZED CLOSED-LOOP GAIN (dB) 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 05704-004 NORMALIZED CLOSED-LOOP GAIN (dB) ݥأଷᆶຫLjVS = 5 VLjRL, dm = 1 kΩLjREF = 2.5 VLjDIS = LOWLjOUT+থথڟFB (G = 2)LjTA = 25°Că ADA4941-1 G = +2 G = +10 1 G = –2 100 10 FREQUENCY (MHz) G = +4 G = +2 G = –2 G = +10 1 NORMALIZED GAIN (dB) CL = 0pF 100 1000 FREQUENCY (MHz) 05704-011 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 0.1 VO, dm = 2V p-p VO, dm = 6V p-p 1 1000 100 15. փཞڦူ܈ޗೕ୲ၚᆌ –70 VREF = 0.05V p-p VO, dm = 2V p-p VREF = MIDSUPPLY –80 DISTORTION (dBc) VS = ±5V –90 –100 HD3 –110 –120 VS = +3V RL = 2kΩ –130 VS = +5V 1 10 FREQUENCY (MHz) RL = 1kΩ HD2 1000 05704-012 NORMALIZED CLOSED-LOOP GAIN (dB) 10 FREQUENCY (MHz) 12. փཞඹႠሜူڦၭ႑ࡽೕ୲ၚᆌ 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 VO, dm = 0.1V p-p 13. փཞۉᇸူڦREFၭ႑ࡽೕ୲ၚᆌ –140 0.1 RL = 500Ω HD2 1 10 100 FREQUENCY (kHz) 16. փཞሜူ฿ኈᇑೕ୲࠲ڦဣ Rev. B | Page 9 of 24 1000 05704-015 NORMALIZED CLOSED-LOOP GAIN (dB) 14. փཞሺᅮူٷڦ႑ࡽೕ୲ၚᆌ CL = 20pF 10 1000 FREQUENCY (MHz) VO, dm = 0.1V p-p 1 100 10 11. փཞሺᅮူڦၭ႑ࡽೕ୲ၚᆌ 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 VO, dm = 2V p-p 05704-014 G = +4 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 05704-013 VO, dm = 0.1V p-p NORMALIZED CLOSED-LOOP GAIN (dB) 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 –13 –14 –15 –16 05704-010 NORMALIZED CLOSED-LOOP GAIN (dB) ADA4941-1 –65 –65 f = 10kHz VS = ±5V –85 DISTORTION (dBc) VS = +5V –95 HD3 –115 HD3 HD2 2 4 6 8 10 12 14 16 18 20 –145 0 4 6 8 10 12 14 16 20 18 20. փཞۉᇸူ฿ኈᇑ࠲ڦ܈ޗဣ(G = -2) –70 VO, dm = 2V p-p VREF = MIDSUPPLY VO, dm = 2V p-p VREF = MIDSUPPLY –80 DISTORTION (dBc) –85 –90 –90 –100 –105 –110 HD2 –115 –120 HD3 –125 –130 HD2 –110 HD2 –120 HD2 HD3 VS = +3V HD3 –135 –140 0.1 1 VS = ±5V 10 1000 100 FREQUENCY (kHz) G = +2 –140 0.1 0.12 1 10 1000 100 CL = 0pF VOUT = 200mV p-p 0.08 OUTPUT VOLTAGE (V) VO = 6V p-p –80 –85 –90 –95 –100 –105 –110 CL = 20pF 0.04 0 –0.04 VO = 2V p-p HD2 HD3 –125 –130 HD3 HD2 1 10 100 FREQUENCY (kHz) 1000 19. փཞူ܈ޗ฿ኈᇑೕ୲࠲ڦဣ –0.12 50ns/DIV 22. փཞඹႠሜူڦၭ႑ࡽຨༀၚᆌ Rev. B | Page 10 of 24 05704-022 –0.08 05704-045 –135 –140 0.1 G = +4 HD3 21. փཞሺᅮူ฿ኈᇑೕ୲࠲ڦဣ –60 –115 –120 HD3 FREQUENCY (kHz) 18. փཞۉᇸူ฿ኈᇑೕ୲࠲ڦဣ –65 –70 –75 G = –2 –130 VS = +5V 05704-020 –95 –100 05704-017 DISTORTION (dBc) 2 OUTPUT AMPLITUDE (V p-p) –75 –80 DISTORTION (dBc) HD3 HD2 17. փཞۉᇸူ฿ኈᇑ࠲ڦ܈ޗဣ(G = +2) –60 VS = ±5V HD3 HD3 –115 –135 OUTPUT AMPLITUDE (V p-p) –65 –70 VS = +5V HD2 HD3 0 VS = +3V –105 –125 HD2 –125 –95 05704-019 –105 05704-016 DISTORTION (dBc) VS = +3V –85 –135 DIFFERENTIAL G = –2 f = 10kHz –75 –75 ADA4941-1 0.12 VS = +3V 8 VOUT = 200mV p-p 0.08 VS = +5V OR VS = ±5V OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) VS = ±5V VO, dm = 12V p-p 6 0.04 0 –0.04 VS = ±2.5V VO, dm = 6V p-p 4 2 VS = ±1.5V VO, dm = 2V p-p 0 –2 –4 –0.08 23. փཞۉᇸူڦၭ႑ࡽຨༀၚᆌ 8 1.2 0.6 0 0 –2 –0.6 2 × VIN –1.2 –6 7 ERROR = 2 × VIN – VO, dm 6 0 VO, dm 4 10 –0.9 –1.2 1 27. ॺ૬้क़(0.005%)LjVS = +5 V 8 INPUT × 2 6 8 OUTPUT OUTPUT VOLTAGE (V) 6 –0.6 1μs/DIV 24. ॺ૬้क़(0.005%)LjVS = ±5 V 12 –0.3 2 × VIN 2 –2.4 0.6 0.3 5 3 –1.8 1μs/DIV –8 0.9 VS = +5V VO, dm = 6V p-p 4 2 0 –2 –4 INPUT × 2 4 2 OUTPUT 0 –2 –4 –6 –8 1μs/DIV –12 05704-024 –6 –10 1μs/DIV –8 25. ࡗൻ࣬ްLjVS = ±5 V 28. ࡗൻ࣬ްLjVS = +5 V Rev. B | Page 11 of 24 05704-027 –4 OUTPUT VOLTAGE (V) AMPLITUDE (V) ERROR = 2 × VIN – VO, dm 2 1.8 1.2 ERROR (mV) 1 DIV = 0.005% VS = ±5V VO, dm = 12V p-p 9 AMPLITUDE (V) 6 2.4 ERROR (mV) 1 DIV = 0.005% VO, dm 4 05704-021 26. փཞۉᇸူٷڦ႑ࡽຨༀၚᆌ 05704-023 8 200ns/DIV –8 05704-026 –0.12 05704-018 –6 50ns/DIV ADA4941-1 0 0.18 ±5V SUPPLIES, POSITIVE RAIL OUTPUT SATURATION VOLTAGE WITH RESPECT TO RAIL (V) –10 –20 –30 PSRR (dB) –40 +PSRR –50 –60 –PSRR –70 –80 –90 0.16 0.14 ±5V SUPPLIES, NEGATIVE RAIL 0.12 +5V SUPPLIES, POSITIVE RAIL 0.10 +5V SUPPLIES, NEGATIVE RAIL 0.08 +3V SUPPLIES, POSITIVE RAIL 0.06 –100 0.1 1 10 100 1000 FREQUENCY (MHz) 0.04 –40 +3V SUPPLIES, NEGATIVE RAIL –20 0 20 40 29. ۉᇸᅞԲᇑೕ୲࠲ڦဣ 100 120 2.5 ICC @ VS = ±5V VPD = VS– 2.0 SUPPLY CURRENT (mA) 3.0 VS = +5V 2.5 VS = ±5V 2.0 VS = +3V 1.5 ICC @ VS = +3V ICC @ VS = +5V 1.5 1.0 0.5 1.0 –40 –20 0 20 40 60 80 100 120 TEMPERATURE (°C) –0.5 0.6 30. ۉᇸୁۉᇑ࿒࠲ڦ܈ဣ 1.0 1.2 1.4 1.6 1.8 2.0 33. ۉᇸୁۉᇑਸ࠲ۉუ࠲ڦဣ 140 150 120 125 VOS_A2 = 10V 100 0.8 DISABLE INPUT VOLTAGE WITH RESPECT TO VS– (V) 05704-032 0 05704-029 100 FREQUENCY VOS_A2 = 5V 75 VOS_A2 = 3V 80 VOS1 MEAN = –8μV STD. DEV = 47μV VOS2 MEAN = 11μV STD. DEV = 20μV NO. OF UNITS = 611 60 50 40 VOS_A1 10V VOS_A1 = 5V 40 60 80 TEMPERATURE (°C) 100 120 0 OFFSET VOLTAGE (μV) 31. ֶݴ฿ۙۉუᇑ࿒࠲ڦ܈ဣ 34. ֶݴ฿ۙݴք Rev. B | Page 12 of 24 05704-033 20 80 100 120 140 160 180 200 0 60 –20 20 40 0 –40 20 05704-030 VOS_A1 = 3V –20 0 25 –200 –180 –160 –140 –120 –100 –80 –60 –40 POWER SUPPLY CURRENT (mA) 80 32. ԏࢅۉუᇑ࿒࠲ڦ܈ဣ 3.5 DIFFERENTIAL OUTPUT OFFSET (μV) 60 TEMPERATURE (°C) 05704-031 0.01 05704-028 –110 0.001 ADA4941-1 DIFFERENTIAL OUTPUT VOLTAGE NOISE (nV/√Hz) 100 28 INPUT CURRENT NOISE (pA/√Hz) 26 10 24 22 20 18 16 14 12 10 8 6 4 10 100 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) 0 05704-034 1 10 1 10k 100k 1M 38. ୁۉሯำᇑೕ୲࠲ڦဣ 3.5 2.65 VS = ±5V INPUT BIAS CURRENT (μA) INPUT BIAS CURRENT (μA) 1k FREQUENCY (Hz) 35. ֶݴۉუሯำᇑೕ୲࠲ڦဣ 2.60 100 05704-037 2 1 VS = +5V 2.55 VS = +3V 2.50 2.45 3.0 2.5 VS = +3V VS = ±5V VS = +5V 2.0 –25 –10 5 20 35 50 65 80 95 125 110 TEMPERATURE (°C) 1.5 –0.5 05704-035 0 0.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 INPUT VOLTAGE WITH RESPECT TO VS– (V) 4.0 REFERENCE INPUT BIAS CURRENT (μA) 3.3 3.2 REFERENCE I BIAS = 10V 3.1 3.0 REFERENCE I BIAS = 5V 2.9 REFERENCE I BIAS = 3V 2.8 –20 0 20 40 60 80 100 TEMPERATURE (°C) 120 VREF = VIN 3.5 3.0 VS = +3V VS = ±5V VS = +5V 2.5 2.0 05704-036 REFERENCE BIAS CURRENT (μA) 1.5 39. ೋዃୁۉᇑۉუ࠲ڦဣ 36. փཞۉᇸူೋዃୁۉᇑ࿒࠲ڦ܈ဣ 2.7 –40 1.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 10.0 9.5 REFERENCE INPUT VOLTAGE WITH RESPECT TO VS– (V) 40. REFೋዃୁۉᇑREFۉუ࠲ڦဣ 37. REFೋዃୁۉᇑ࿒࠲ڦ܈ဣ Rev. B | Page 13 of 24 05704-039 2.35 –40 05704-038 2.40 ADA4941-1 14 VS = ±5V G=4 RF = 1kΩ RL = ∞ DIS = HIGH 8 12 DISABLE INPUT CURRENT (μA) DISABLED SUPPLY CURRENT (μA) 10 VS = ±5V 6 VS = +5V 4 VS = +3V 2 10 8 6 4 –20 0 20 40 60 80 100 120 TEMPERATURE (°C) 0 05704-040 0 –40 0 1 2 3 4 5 6 7 8 9 10 DISABLE INPUT VOLTAGE WITH RESPECT TO VS– (V) 41. ሏ࠲ݣԿ้փཞۉᇸူۉᇸୁۉᇑ࿒࠲ڦ܈ဣ 05704-043 2 44.ਸ࠲ୁۉᇑਸ࠲ۉუ࠲ڦ VO, dm 500mV/DIV 500mV/DIV VO, dm VPD 40μs/DIV 05704-044 05704-041 VPD 40μs/DIV 42. ࠲Կዃ࿋้क़ 45. ࠲Կް࿋้क़ –40 100 VIN = 50mV p-p –50 10 VON IMPEDANCE (Ω) –70 –80 1 0.1 0.01 VOP –90 –110 0.1 1 10 100 1000 FREQUENCY (MHz) 43. ሏ࠲ݣԿ้߰ᇑೕ୲࠲ڦဣ 0.0001 0.001 0.01 0.1 1 10 FREQUENCY (MHz) 46. ܋ڇፆੇᇑೕ୲࠲ڦဣ Rev. B | Page 14 of 24 100 05704-025 0.001 –100 05704-042 ISOLATION (dB) –60 ADA4941-1 ߾ፕᇱ ADA4941-1ᅃࡼࠀگĂ܋ڇĂֶݴٷݣഗLj ժ ኍ ܔൻ ݴ ߛ ۯՐ ୲ ADC ႜ କ ᆫ ࣅ ă 47ቛ ๖ କ ADA4941-1ۆڦ႙থݛ๕ăٷݣഗᆯᅃ߲ݥጆᆩٷݣ ഗA1ൻۯᅃ߲ొՎഗA2ăA1ڦटԥᆅڟᆅ গ1(FB)LjܸٗሎႹᆩࢽܔሺᅮႜՊײăݒ၎ሏ໙ٷݣഗ A2ඓݒገA1ڦ႑ࡽVOPLjׂܸิ႑ࡽVONă ړRF = 0ܸRGԥأඁ้Ljײݛ3०ࣅྺူ๕ǖ 48. ມۉᇸĂG = 2.4Ă܋ڇገֶٷݣݴഗ 48ມۉᇸথڦ๖૩ăԨ૩ዐLjVGࢅVREFยྺ 0 VLjྔևRFࢅRGྪஏ๑A1༵ࠃ1.2ڦཞ၎ሺᅮăԨ૩؊ ݴ૧ᆩࡆࡆڟपăሺᅮࠅ๕ྺǖ 47. एԨথ(࿄၂๖ۉᇸ) แेڟREFᆅগۉڦუ৽ࠌఇۉუă൩ጀᅪLjแे ڟREFᆅগۉڦუժփࣷᆖၚOUT+ᆅগۉڦتუăᅺ ُLjኮक़ᅜ٪ሞֶݴ฿ۙLjܸཞ้ీࠕइڥႴڦ ࠌఇۉუă૩සLjVOP = 3.5 VVON = 1.5 V้Lj ࠌఇۉუڪᇀ2.5 VLj৽ࢅଇ߲ྺ2.5 V้ᅃᄣăሞമ ᅃዖ൧ူLjֶۉݴუ(ई฿ۙ)ྺ2.0 VLjܸሞࢫᅃዖ൧ ူLjֶۉݴუྺ0 Văऺ໙ۉუ้LjՂႷཞ้୯ֶ ۉݴუࢅࠌఇۉუLjᅜՆ௨փႴᄲݴֶڦ฿ۙă ڦز825 Ωۉፆᇑᆅগ8ցA1฿ۙۉڦิׂୁۉ უဃֶăA1ࢅA2ڦ၍Ⴀྷݔᅜકቛ߳ࠃࡆۉ 200 mVᅜాLjܸٗሎႹሞ֑ᆩ±5 Vۉᇸࠃํ้ۉ၄19.2 V ރރڦኵֶݴۉუă एԨ߾ፕᇱ! 47ዐLjRGࢅRFࠓྔׯևሺᅮยዃྪஏăVGࢅVREFྺ ྔևแेۉڦუăVO, cmۨᅭྺࠌఇۉუLjܸVO, dm ۨᅭྺֶఇۉუăٗ47ᅜڥᅜူײݛǖ 49. +5VۉڇᇸĂG=2܋ڇገֶٷݣݴഗ 49၂๖ڦᆩ5 Vۉڇᇸথڇڦ࿋ሺᅮ߶ໜഗA1ăREF ᆅগڦت2.5 Vۉუॽࠌఇۉუยዃྺ2.5 Văࡧڿدຕ ྺǖ Rev. B | Page 15 of 24 ADA4941-1 ഄዐLj၍Ⴀۉუ၌ᇀA1ă้܋گLjໜጣVOPደॷথ ৎ200 mVLjA1ڦਸ๔ԏࢅժ၍Ⴀ܈၄ူইăߛ܋ ้LjᅃڋVINࡗג4 V(VCCڦ1 V)ాྷݔLjA1नՎׯԏ ࢅժ၍Ⴀ܈၄ူইăኄࣷॽ49๖ۉୟڦ၍Ⴀֶݴ ۉუ၌ሞٷሀ7.6 Vރރኵă ֑ᆩࡀ߭༬Ⴀዐڦຕሞऺ໙ဃֶ้Lj๑ᆩ฿ۙۉ ୁઠ߳༺پೋዃୁۉཚၳࡕࣷ߸ࡻă฿ۙୁۉ ۨᅭྺଇ߲ೋዃୁۉኮक़ֶڦኵă૧ᆩُۨᅭLj߳ ೋዃୁۉ֑ᆩଇ߲ೋዃڦୁۉೝኵ(IB)ࢅ ฿ۙ(ୁۉIOS)ڦႚ๕๖LjनIBP, N = IB ± IOS/2ăړRS = RF || RG้Ljୁဃֶፌၭăُ้Ljײݛ9ᅜ०ࣅྺǖ ײݛ10๖ڦVONڦتୁۉუဃֶă ೌాणׯ500 ΩాڦևۉፆLjॽᅺA2ዐ฿ܸۙୁۉሰ ڦׯୁဃֶইڟፌگăړRS_REF = 0 Ω้Ljဃֶፌၭăُ ้Ljײݛ10ᅜ०ࣅྺǖ 50. 5 VۉᇸࠃۉĂG = 5Ă܋ڇገֶٷݣݴഗ 50၂๖ڦG = 5้ڦ5 VۉڇᇸথăRFࢅRGྪஏॽA1 ڦሺᅮยዃྺ2.5LjܸREFڦت2.5 Vۉუ༵ࠃᅜ2.5 V ྺዐ႐ڦࠌఇۉუăࡧڿدຕྺǖ VOP − VON = 5(VIN) − 5 V (8) A1ࢅA2ڦྷݔ၌ࣷॽ50๖ۉୟݴֶڦۉუ ၌ሞٷሀ8.4 Vރރኵă ֶݴۉუဃֶ(VO_error,dm)VOP_errorࢅVON_error ኮक़ֶڦኵǖ ُྔLjADA4941-1ฉ߳ٷݣഗڦ฿ۙۉუ࣏ਏᆶᆶ၌ ࠌఇᅞԲ(CMRR)ĂۉᇸᅞԲ(PSRR)ࢅୁਸ࣍ሺᅮ (AVOL)ڪၳᆌă ୁဃֶऺ໙! ഄዐǖ VOS_nomփԈઔCMRRĂPSRRࢅAVOLၳᆌڦՔ฿ۙ ۉუă Δ๖ՔཉॲՎࣅă 51. ୁဃֶᇸ 51၂๖ڦୁۉუဃֶڦዷᄲઠᇸăܔᇀ߳ Ljጺۉუဃֶ๑ᆩຄဒڦሏ໙ٷݣഗ߁ႜऺ໙ă ײݛ9๖ڦVOPڦتୁۉუဃֶă V CM ྺࠌఇۉუ)ܔᇀ A1LjྺINۉڦتუLjܸܔᇀ A2LjሶྺREFۉڦتუ*ă VSྺۉᇸۉუă VOUTྺඪᅃሏ໙ٷݣഗă Rev. B | Page 16 of 24 ADA4941-1 7Ă8ࢅ9၂๖ڦ48Ă49ࢅ50๖ۉୟۆڦ႙ ဃֶᇨ໙ă RF = 1.0 kΩ, RG = 4.99 kΩ, RS_IN = 825 Ω, RS_REF = 0 Ω 52၂๖ڦADA4941-1ֶݴۉუሯำڦዷᄲઠᇸă ֶݴሯำۉݛუڪᇀཞ၎ཚ(ڢA1)ሯำۉݛუڦ ଇԠेฉᇑݒ၎ཚ(ڢA2)၎࠲ڦሯำۉݛუၜă 7. 48๖G = 2.4ٷݣഗڦۉუဃֶᇨ໙ ဃֶᇸ VOS_A1 IBP_A1 IBN_A1 VOS_A2 ۆ႙ኵ 0.1 mV 3 μA 3 μA 0.1 mV VOP_error +0.12 mV +2.48 mV −2.48 mV 0 mV VON_error −0.12 mV −2.48 mV +2.48 mV +0.2 mV VO_dm_error +0.24 mV −4.96 mV +4.96 mV +0.2 mV ጺ V O_error, dm = 0.44 mV RF = 0 Ω, RG = ∞, RS_IN = 0 Ω, RS_REF = 0 Ω 8. 49๖ٷݣഗڦۉუဃֶᇨ໙ ဃֶᇸ ۆ႙ኵ VOS_A1 IBP_A1 IBN_A1 VOS_A2 0.1 mV 3 μA 3 μA 0.1 mV ഄዐVON_n2ऺڦ໙ࠅ๕සူǖ! VOP_error +0.1 mV +2.48 mV −2.48 mV 0 mV VON_error −0.1 mV −2.48 mV +2.48 mV +0.2 mV VO_dm_error +0.2 mV −4.96 mV +4.96 mV +0.2 mV ഄዐǖ ጺ VO_error, dm = 0.4 mV vn_A1ࢅ vn_A2ݴ՚A1ࢅA2ڦۉუሯำLjժڪᇀ 2.1 nV/√Hză RF = 1.02 kΩ, RG = 665 Ω, RS_IN = 402 Ω, RS_REF = 0 Ω in_A1 Ă in_A2 Ă ip_A1 ࢅ ip_A2 ٷݣഗڦୁۉሯำ ၜLjժڪᇀ1 pA/√Hză 9. 50๖G = 5ٷݣഗڦۉუဃֶᇨ໙ ဃֶᇸ ۆ႙ኵ VOS_A1 IBP_A1 IBN_A1 VOS_A2 0.1 mV 3 μA 3 μA 0.1 mV VOP_error +0.25 mV +1.21 mV −1.21 mV 0 mV VON_error −0.25 mV −1.21 mV +1.21 mV +0.2 mV VO_dm_error +0.5 mV −2.4 mV +2.4 mV +0.2 mV RS、RFࢅRGݴ՚ྔևᇸĂݒઍࢅሺᅮۉፆă kTਨܔ࿒ױ܈ᅜհܻጦதຕLj࿒ူڪᇀ4.2 x 10-21W-să ጺ V O_error, dm = 0.7 mV RS_REFREFᆅগڦتᇸፆੇă ۉუሯำ ॽA1ᆩፕڇ࿋ሺᅮ߶ໜഗ้Ljۉუሯำೕ܈ፌ ၭLjྺ10 nV/√HzăۉუሺᅮሁߛLjۉუሯำሁٷă 10Ă11ࢅ12၂๖ڦ48Ă49ࢅ50๖ۉୟڦ ሯำࠋ၅ࢅۉუሯำă 52. ሯำᇸ Rev. B | Page 17 of 24 ADA4941-1 10. 48๖G = 2.4ֶٷݣݴഗڦۉუሯำ ሯำᇸ vn_A1 ip_A1 in_A1 √4 kTRF √4 kTRG √4 kTRS vn_inverter √RS_REF ip_A2 × RS_REF ۆ႙ኵ 2.1 nV/√Hz 1 pA/√Hz 1 pA/√Hz 4 nV/√Hz 9 nV/√Hz 3.6 nV/√Hz 9.2 nV/√Hz 0 0 VOPࠋ၅ኵ(nV√Hz) 2.5 1 1 4 1.8 4.4 0 0 0 VONࠋ၅ኵ(nV√Hz) 2.5 1 1 4 1.8 4.4 9.2 0 0 VO, dmࠋ၅ኵ(nV√Hz) 5 2 2 8 3.6 8.8 9.2 0 0 ጺऺ 6.8 11.4 16.5 RF = 1.0 kΩLjRG = 4.99 kΩLjRS = 825 ΩLjRS_REF = 0 Ωă vn_inverter= A2तഄ၎࠲ాև1 kΩݒઍۉፆࢅ500 Ω฿ۙୁۉೝ࢚ۉፆڦሯำࠋ၅ă 11. 49๖G = 2ֶٷݣݴഗڦۉუሯำ ሯำᇸ vn_A1 ip_A1 in_A1 √4 kTRF √4 kTRG √4 kTRS vn_inverter √RS_REF ip_A2 × RS_REF ۆ႙ኵ 2.1 nV/√Hz 0 0 0 0 0 9.2 nV/√Hz 0 0 VOPࠋ၅ኵ(nV√Hz) 2.1 0 0 0 0 0 0 0 0 VONࠋ၅ኵ(nV√Hz) 2.1 0 0 0 0 0 9.2 0 0 VO, dmࠋ၅ኵ(nV√Hz) 4.2 0 0 0 0 0 9.2 0 0 ጺऺ 2.1 9.4 10 RF = 0 Ω, RG = ∞, RS = 0 Ω, RS_REF = 0 Ω. 12. 50๖G = 5ֶٷݣݴഗڦۉუሯำ ሯำᇸ vn_A1 ip_A1 in_A1 √4 kTRF √4 kTRG √4 kTRS vn_inverter √RS_REF ip_A2 × RS_REF ۆ႙ኵ 2.1 nV/√Hz 1 pA/√Hz 1 pA/√Hz 4 nV/√Hz 3.26 nV/√Hz 2.54 nV/√Hz 9.2 nV/√Hz 0 0 VOPࠋ၅ኵ(nV√Hz) 5.25 1 1 4 4.9 6.54 0 0 0 VONࠋ၅ኵ(nV√Hz) 5.25 1 1 4 4.9 6.54 9.2 0 0 VO, dmࠋ၅ኵ(nV√Hz) 10.5 2 2 8 9.8 13.1 9.2 0 0 ጺऺ 10.7 14.1 23.1 RF = 1.02 kΩ, RG = 665 Ω, RS = 402 Ω, RS_REF = 0 Ω. Rev. B | Page 18 of 24 ADA4941-1 ೕ୲ၚᆌᇑԿ࣍ሺᅮ ADA4941-1ዐ๑ᆩڦۉუሏ໙ٷݣഗă ڦਸ࣍ೕ୲ၚ ᆌ߶ओݴഗၚᆌૌຼă ੂ53ă ݒ၎ٷݣഗA2ਏᆶᅃ߲ࠦۨݒڦઍྪஏăࡧڿدຕٷዂ ྺǖ A1ڦೕ୲ၚᆌൽਦᇀײݛ15๖ྔڦևݒઍྪஏăᅺ ُLjጺֶݴۉუྺǖ 53. ADA4941-1ሏ໙ٷݣഗਸ࣍ሺᅮᇑೕ୲࠲ڦဣ ܔᇀ߲ٷݣഗLjೕ୲ၚᆌཚࡗူ๕ႜৎຼऺ໙ǖ ॽ߳ၜ၎ױժูඁࢮփऺڦၜनڟڥᅜူৎຼኵǖ !!!!!!!!)ཞ၎ၚᆌ* !!!!!!!!(ݒ၎ၚᆌ) fCRྺٷݣഗڦሺᅮټೕ୲(ഄዐ53๖ڦਸ࣍ሺᅮڪᇀ 1)ăଇ߲ٷݣഗڦfCRሀྺ50 MHză ُࡧڿدຕᆶଇ߲टۅLjܸডگೕ୲ڦटࣷۅ၌ֶݣݴ ٷഗ ټ ڦă ස ࡕVOP ܌ୟ IN−) A1ྺ ڇ࿋ ሺ ᅮ ߶ ໜ ഗ*Ljݒ၎ཚڦڢ25 MHzԿ࣍ࣷټ၌ኝ༹ټăړA1 ֑ᆩডߛሯำሺᅮ้Ljࣷټ၌ᇀA1ڦԿ࣍ټLjܸࢫ ኁᇑሯำሺᅮ(1 + RF/RG)ݒׯԲă૩සLjසࡕྔևݒઍྪ ஏڦሯำሺᅮྺ10Ljሶࣷټই5 MHză Rev. B | Page 19 of 24 ADA4941-1 ᆌᆩ ߁ຎ ADA4941-1ᅃۙሺᅮĂ܋ڇገֶۉݴუٷݣഗLjժ ኍܔൻݴߛۯՐ୲ADCႜକᆫࣅă܋ڇገֶݴሺᅮᆯᅃ ߲ݒઍྪஏ੦Ljྪஏᆯᅜူଇ߲ྔևۉፆࠓׯǖRFࢅ R Gă ๑ᆩREFᆅগ REFᆅগॽए၍ยዃሞݒ၎ୟ০ዐLjժᆩፕ႑ࡽ ڦएጚăሞٷևݴᆌᆩዐLjREFᆅগยዃྺ႑ࡽዐक़ ӦۉޗೝLjࢪ้ܠᄺྺዐक़ۉᇸۉუăܔᇀມटႠ႑ ࡽࢅມۉᇸࠃۉLjREFཚยዃྺۉںუăሞۉڇᇸᆌᆩ ዐLjॽREFยዃྺ႑ࡽዐक़Ӧۉޗೝ༵ࠃਏᆶፌၭ ֶݴ฿ۙڦፌᆫۯༀྷݔႠీă൩ጀᅪLjREFኻ ࣷᆖၚݒ၎႑ࡽୟ০ईVONă ܠٷຕᆌᆩᄲ൱ሞ߳ࠃ༵܋ਏᆶ၎ཞୁࠌఇۉೝڦ ֶݴ႑ࡽăሞVOPࢅVONฉ֪ଉڦڟ႑ࡽీਏᆶ ႴۉೝࠌڦఇۉუLjڍڦ܋ۉუీփᅃᄣăཚ ࣷՆ௨ُૌ႑ࡽLjᅺྺ݆ᆶၳں૧ᆩٷݣഗڦۯ ༀྷݔă ැॽVINۨᅭྺแेڟᆅগۉڦუLjሶਦۨଇ߲႑ࡽ ୟ০ݴײݛڦ՚ྺײݛ21ࢅײݛ22ă VOP = VIN (21) VON = −VIN + 2 (REF) (22) ړREFۉუยዃྺ႑ࡽڦዐक़ӦۉޗೝLjሶଇ߲ ႑ࡽࣷዘ۠Ljܸ฿ۙࣷ३ณڟፌၭăܸॽREFۉუยዃ ڟඪࢆഄݛںLjሶࣷڞዂଇ߲ኮक़၄฿ۙă ྺକᅃօຫREFᆅগڦፌॅᆩ݆Ljူ௬ઠੂੂۉᇸۉ უྺ10 V႑ࡽ࿋ᇀ2 Vࢅ7 Vኮक़ۉڇڦᇸӄ૩ăԨ ૩ዐ႑ࡽڦዐक़Ӧۉޗೝժփዐक़ۉᇸۉუLjܸ 4.5 VăཚࡗॽREFยዃྺ4.5 Vժࢮ฿ۙLjሶ๑ᆩ ײݛ21ࢅײݛ22ઠऺ໙ࡕăړ႑ࡽ࿋ᇀዐक़ۅ4.5 V ้LjOUT+ྺ4.5 VLjٷၭᇑVONᅃᄣăኄፕᅃዖए၍ ጒༀLjֶُ้ݴۉუྺ0ăړሺेڟ7 V้LjVOP ߶ጷሺेڟ7 VLjܸVONࣷই2 Văኄፕᅃ߲ኟ ރኵ႑ࡽLjֶُ้ݴۉუڪᇀ5 Văړ႑ࡽই2 V้LjVOPምْ߶ጷ2 VLjܸVONࣷሺेڟ7 Văኄ ፕᅃ߲ރኵ႑ࡽLjֶُ้ݴۉუڪᇀ−5 VăᅺُLj ݴֶڥۉუྺ10 Vރރኵă ٗኮമڦ༪ஃᅜੂٷၭྺ2܋ڇڦገֶݴሺᅮසࢆ ํ၄ڦă ాևݒઍྪஏࠀࡼ دཥሏ໙ٷݣഗժփԈࡤೌాݒઍᇮॲLjܸADA4941-1ದ ᆶଇ߲ೌా1 kΩۉፆLjኄଇ߲ۉፆࠓׯକᅃ߲ాևݒઍ࣍ ୟăሞऺ໙ഗॲڦጺࠀࡼ้LjՂႷ୯ኄၵۉፆࠀڦ ࡼăగၵ൧ူLjኄၵۉፆࡼࠀڦీᇑഗॲৢڦༀࠀ ࡼփ၎ฉူă૩සLjۉᇸۉუྺ±5 VĂREFᆅগথںLj OUT−ྺ+4 VDC้Lj߲1 kΩۉፆฉྺୁۉڦ4 mALjᅺُ ߲ۉፆྺࡼࠀڦ16 mWLjଇ߲ۉፆڦጺࠀࡼྺ32 mWă ኄᇑৢༀࠀࡼփ၎ฉူLjᅺُऺ໙ഗॲጺࠀࡼ้ՂႷ୯ ሞాăܔᇀୁ႑ࡽLjሶႴᄲႜݴߵݛဆă ্ᆩ༬Ⴀ ADA4941-1ਏᆶਸ࠲ࠀీLjሞ༬้ۨक़ॽᆩഗॲࠀڦ ࡼইፌگăዃ࿋้Ljਸ࠲ࠀీփࣷॽഗॲዃᇀߛፆ ੇईෙༀཉॲူăਸ࠲༬Ⴀྺߛۉೝᆶၳăᆶ࠲ߛۉگೝ ۉუ༬ႠLj൩֖९ࡀ߭༬Ⴀă Rev. B | Page 20 of 24 ADA4941-1 ཁे3टۅSallen-Key୳հഗ 54ቛ๖ڦ3टۅSallen-Keyگཚ୳հഗLj ڦপೕ୲ 100 kHzăԈࡤڦ1.69 kΩۉፆᆩᇀॽᅺA1ዐ฿ۙ ୁۉሰڦׯୁဃֶইፌၭăൻڦۯADCገ࣑ഗཚ Ⴔᄲֶݴሏݣሞ܋ದዃᇸRC୳հഗă୳հഗڦೕ ୲ၚᆌ൸၍ස55๖ă ADA4941-1ዐڦཞ၎ٷݣഗᆩፕSallen-Key୳հഗ࣐ڦ؋ ٷݣഗăܸ3टگۅཚ୳հഗยऺᆩᇀሞADCኮമ၌ ႑ࡽټă႑ࡽံୁࡗཞ၎पժሞتႜࡗ୳ă থጣLj୳հࢫڦ႑ࡽୁࡗݒ၎पLjᅜइࢻڥցă OUT+ 3 10nF 562Ω 562Ω 1.69kΩ 1 562Ω 8 FB VS+ 6 560pF 3.9nF OUT– A2 REF + VO, dm – 0.1μF 1kΩ VS– 2 33Ω 2.7nF 1kΩ +5V A1 IN 4 5 33Ω 2.7nF 500Ω –5V 0.1μF 05704-058 VIN 54. Sallen-Keyگཚ୳հഗᇑ100 kHzপኹೕ୲ 0 VO, dm = 3V p-p –10 –20 VO, dm/VIN (dB) –30 –40 –50 –60 –70 –80 –100 10 100 1k 10k 100k 1M FREQUENCY (Hz) 55. 54๖ۉୟڦೕ୲ၚᆌ Rev. B | Page 21 of 24 10M 100M 05704-059 –90 ADA4941-1 ൻۯAD7687 ADC −2ሺᅮದዃ ADA4941-1ᅃࢇAD7687ݴߛڪՐ୲ADCڦൻۯ ഗLjස56๖ăԨ૩Ԉࡤ54๖ڦSallen-Keyگཚ୳հ ഗLjํڍाฉᆶă56๖ۉڦୟথӦޗሞ0 Vࢅ 3 Vኮक़܋ڇڦ႑ࡽă ADA4941-1ᅜሞሺᅮྺ−2ڦದዃူ߾ፕă၂Lj−2ڦሺ ᅮཚࡗ०࣑ࢻںڇ+2ሺᅮۉୟڦઠํ၄Ljڍُت ถڦದዃᆶփཞăದዃ֑ᆩሺᅮઠഽۙٷݣ ഗ(A1)ፕྺݒ၎ٷݣഗ๑ᆩLjܸփሞഄ९ཞ၎ఇ๕ ူ߾ፕăኟසഄఁ๖LjٗVINڟVO, dmۉڦუሺᅮྺ− 2 V/Văᆶ࠲ۉᇸۉუྺ±5 V้−2ሺᅮದዃڦ൧Lj൩֖ ९57ă ADR443༵ࠃ࿘ۨĂگሯำڦ3 VएጚۉუᇸLjࢫएጚ ۉუᇸᆯഄዐᅃ߲AD8032ٷݣഗ࣐؋ժแेڟAD7687 REF܋Ljܸ༵ٗࠃ6 Vݴֶڦଉۉײೝăཞ้Lj एጚۉუ࣏ࣷႜܾݴೕࢅ࣐؋تLjܸٗၠADA4941-1 ༵ࠃ1.5 Vڦዐक़ۉᇸۉუREFۉೝă −2ሺᅮದዃሞਏᆶӦڦޗᆌᆩዐፌྺᆶᆩLjᅺྺ ࠌఇۉუࣷԍۉ࢛ۨೝăᅺُLj႑ࡽٷၭ၌ᇀ Ӧޗ၌ă−2ሺᅮਏᆶگፆੇLjٷၭڪᇀRGă +5V 0.1μF OUT+ 1kΩ 3 10nF 562Ω VS+ IN 8 VS– ADA4941-1 2 REF 500Ω 6 VIN 0V TO 3V 560pF 3.9nF 2 0.1μF VIN VOUT GND 33Ω 4 IN– GND REF 5 1 0.1μF +5V +5V 10μF 5 2.7nF –5V ADR443 OUT– A2 IN+ VDD AD7687 0.1μF 1kΩ A1 2 3 10μF 0.1μF 6 3 8 1 0.1μF 2 4 1/2 4 AD8032 10μF 1kΩ 5 7 1kΩ 6 1/2 AD8032 56. ADA4941-1ൻۯAD7687 ADC RF 1kΩ OUT+ 3 RG 1kΩ 1 8 VIN FB 1kΩ +5V VS+ VS– 2 500Ω 6 + VO, dm – 1kΩ A1 IN 4 A2 REF 500Ω –5V 57. −2ሺᅮದዃ Rev. B | Page 22 of 24 OUT– 5 05704-060 562Ω FB 33Ω 2.7nF 05704-061 562Ω 1.69kΩ 1 4 ADA4941-1 ྔႚ٫ 5.00 (0.1968) 4.80 (0.1890) 8 4.00 (0.1574) 3.80 (0.1497) 1 5 4 6.20 (0.2441) 5.80 (0.2284) 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 0.25 (0.0098) 0.10 (0.0040) 0.51 (0.0201) 0.31 (0.0122) COPLANARITY 0.10 SEATING PLANE 0.50 (0.0196) 0.25 (0.0099) 45° 8° 0° 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 012407-A COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. 58. 8ᆅগՔጚၭ႙ހጎ[SOIC_N] ༹(R-8) ๖٫ڇ࿋ǖmmࢅ(inches) 0.60 MAX 5 PIN 1 INDICATOR 2.95 2.75 SQ 2.55 TOP VIEW 8 12° MAX SEATING PLANE 0.50 0.40 0.30 0.70 MAX 0.65 TYP 0.05 MAX 0.01 NOM 0.30 0.23 0.18 0.20 REF 1.60 1.45 1.30 EXPOSED PAD (BOTTOM VIEW) 4 0.90 MAX 0.85 NOM 0.50 BSC 0.60 MAX 1 1.89 1.74 1.59 PIN 1 INDICATOR FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET. 090308-B 3.25 3.00 SQ 2.75 59. 8ᆅগᆅগॐࠓႊೌपހጎ[LFCSP_VD] 3 mm x 3 mmLjגԋ༹Ljມଚᆅগ(CP-8-2) ๖٫ڇ࿋ǖmm ۩ࠔኸళ ႙ࡽ! ADA4941-1YRZ ADA4941-1YRZ-RL ADA4941-1YRZ-R7 ADA4941-1YCPZ-R2 ADA4941-1YCPZ-RL ADA4941-1YCPZ-R7 1 ࿒!ྷݔ܈ −40°C +125°C −40°C +125°C −40°C +125°C −40°C +125°C −40°C +125°C −40°C +125°C ހጎ௮ຎ! 8ᆅগSOIC_N 8ᆅগSOIC_N 8ᆅগSOIC_N 8ᆅগLFCSP_VD 8ᆅগLFCSP_VD 8ᆅগLFCSP_VD Z = ࢇޙRoHSՔጚڦग़ඹഗॲă Rev. B | Page 23 of 24 ހጎၜ! R-8 R-8 R-8 CP-8-2 CP-8-2 CP-8-2 ۩ࠔຕଉ! 98 2,500 1,000 250 5,000 1,500 Ք๎ H0C H0C H0C ADA4941-1 ጀ ©2009–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05704-0-3/09(A) Rev. B | Page 24 of 24