MAX4451规格书,MAX4450技术资料,MAX4451ESA,MAX4451EPA.pdf

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1、General DescriptionThe MAX4450 single and MAX4451 dual op amps areunity-gain-stable devices that combine high-speed per-formance with Rail-to-Railoutputs.Both devices oper-ate from a+4.5V to+11V single supply or from 2.25Vto 5.5V dual supplies.The common-mode input volt-age range extends beyond the

2、negative power-supplyrail(ground in single-supply applications).The MAX4450/MAX4451 require only 6.5mA of quies-cent supply current per op amp while achieving a210MHz-3dB bandwidth and a 485V/s slew rate.Bothdevices are an excellent solution in low-power/low-voltage systems that require wide bandwid

3、th,such asvideo,communications,and instrumentation.The MAX4450 is available in the ultra-small 5-pin SC70package,while the MAX4451 is available in a space-saving 8-pin SOT23.ApplicationsSet-Top BoxesSurveillance Video SystemsBattery-Powered InstrumentsVideo Line DriverAnalog-to-Digital Converter Int

4、erfaceCCD Imaging SystemsVideo Routing and Switching SystemsDigital CamerasFeatureso Ultra-Small SC70-5,SOT23-5,and SOT23-8Packageso Low Costo High Speed210MHz-3dB Bandwidth 55MHz 0.1dB Gain Flatness485V/s Slew Rateo Single+4.5V to+11V Operationo Rail-to-Rail Outputso Input Common-Mode Range Extends

5、 Beyond VEEo Low Differential Gain/Phase:0.02%/0.08o Low Distortion at 5MHz-65dBc SFDR-63dB Total Harmonic DistortionMAX4450/MAX4451Ultra-Small,Low-Cost,210MHz,Single-SupplyOp Amps with Rail-to-Rail Outputs _ Maxim Integrated Products1VEEIN-IN+15VCCOUTMAX4450SC70-5/SOT23-5TOP VIEW234Pin Configuratio

6、nsRO50 INVOUTZO=50 UNITY-GAIN LINE DRIVER(RL=RO+RTO)RF24RTO50RTIN50MAX4450Typical Operating Circuit19-1522;Rev 2;1/00Ordering InformationPin Configurations continued at end of data sheet.Rail-to-Rail is a registered trademark of Nippon Motorola,Ltd.PARTMAX4450EXK-TMAX4450EUK-TMAX4451EKA-TMAX4451ESA-

7、40C to+85C-40C to+85C-40C to+85C-40C to+85CTEMP.RANGEPIN-PACKAGE5 SC70-55 SOT23-58 SOT23-88 SOTOPMARKAAAADKPAAAAFor free samples and the latest literature,visit www.maxim- or phone 1-800-998-8800.For small orders,phone 1-800-835-8769.深圳市万瑞尔科技有限公司 美信代理商 0755-28269789 http:/MAX4450/MAX4451Ultra-Small,

8、Low-Cost,210MHz,Single-SupplyOp Amps with Rail-to-Rail Outputs 2_ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICS(VCC=+5V,VEE=0,RL=to VCC/2,VOUT=VCC/2,TA=TMINto TMAX,unless otherwise noted.Typical values are at TA=+25C.)(Note 1)Supply Voltage(VCCto VEE).+12VIN_-,IN_+,OUT_.(VEE-0.3V)to(VCC+0.3V)

9、Output Short-Circuit Current to VCCor VEE.150mAContinuous Power Dissipation(TA=+70C)5-Pin SC70-5(derate 2.5mW/C above+70C).200mW5-Pin SOT23-5(derate 7.1mW/C above+70C).571mW8-Pin SOT23-8(derate 5.26mW/C above+70C).421mW8-Pin SO(derate 5.9mW/C above+70C).471mWOperating Temperature Range.-40C to+85CSt

10、orage Temperature Range.-65C to+150CLead Temperature(soldering,10s).+300CStresses beyond those listed under“Absolute Maximum Ratings”may cause permanent damage to the device.These are stress ratings only,and functionaloperation of the device at these or at any other conditions beyond those indicated

11、 in the operational sections of the specifications is not implied.Exposureto absolute maximum rating conditions for extended periods may affect device reliability.PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSVVEE-VCC0.202.25Guaranteed by CMRR testVCMInput Common-Mode Voltage RangeInput Offset Voltage(Note

12、 2)Input Offset Voltage MatchingVOS4261.0mVmVV/C8TCVOSInput Offset VoltageTemperature CoefficientInput Bias CurrentInput Offset CurrentIBIOS(Note 2)(Note 2)6.5200.54AAk70Differential mode(-1V VIN+1V)RINInput ResistanceCommon mode(-0.2V VCM+2.75V)3MdB70955060485857dBV0.050.200.050.150.300.500.250.800

13、.50.800.51.751.01.50.0250.0654570mAmA81204662dBV54694.511.06.59.0mAVCCto VEEVEE=-5V,VCM=0VEE=0,VCM=2VVCC=5VSinking or sourcingVOL-VEEVCC-VOHVOL-VEEVCC-VOHVOL-VEEVCC-VOHVOL-VEEVCC-VOH1V VOUT 4V,RL=500.5V VOUT 4.5V,RL=1500.25V VOUT 4.75V,RL=2k(VEE-0.2V)VCM (VCC-2.25V)RL=2kRL=150RL=75RL=75 to groundISV

14、SPSRRROUTISCIOUTVOUTAVOLCMRRCommon-Mode Rejection RatioOpen-Loop Gain(Note 2)Output Voltage Swing(Note 2)Output CurrentOutput Short-Circuit CurrentOpen-Loop Output ResistancePower-Supply Rejection Ratio(Note 3)Operating Supply-VoltageRangeQuiescent Supply Current(per amplifier)RL=502550SourcingSinki

15、ng深圳市万瑞尔科技有限公司 美信代理商 0755-28269789 http:/MAX4450/MAX4451Ultra-Small,Low-Cost,210MHz,Single-SupplyOp Amps with Rail-to-Rail Outputs _3AC ELECTRICAL CHARACTERISTICS(VCC=+5V,VEE=0,VCM=+2.5V,RF=24,RL=100 to VCC/2,VOUT=VCC/2,AVCL=+1V/V,TA=+25C,unless otherwisenoted.)PARAMETERSYMBOLMINTYPMAXUNITS2nd harmo

16、nic3rd harmonicTotal harmonic distortionSpurious-Free DynamicRangeSFDR-65Bandwidth for 0.1dB GainFlatnessBW0.1dB55MHzLarge-Signal-3dB BandwidthBWLS175MHz485Settling Time to 0.1%tS16nsRise/Fall TimetR,tF4ns-65VOUT=100mVp-p Small-Signal-3dB BandwidthBWSS210MHzdBcfC=5MHz,VOUT=2Vp-pHarmonic DistortionHD

17、-58-63dBcTwo-Tone,Third-OrderIntermodulation DistortionIP366dBcInput 1dB Compression Point14dBmDifferential Phase ErrorDP0.08degreesDifferential Gain ErrorDG0.02%Input Noise-Voltage Densityen10nV/HzInput Noise-Current Densityin1.8pA/HzInput CapacitanceCIN1pFOutput ImpedanceZOUT1.5CONDITIONSVOUT=2Vp-

18、pVOUT=2V stepf1=4.7MHz,f2=4.8MHz,VOUT=1Vp-pVOUT=100mVp-pfC=5MHz,VOUT=2Vp-pfC=10MHz,AVCL=+2V/VNTSC,RL=150NTSC,RL=150VOUT=100mVp-pf=10kHzf=10kHzf=10MHzSlew RateSRV/sVOUT=2V stepNote 1:All devices are 100%production tested at TA=+25C.Specifications over temperature limits are guaranteed by design.Note

19、2:Tested with VCM=+2.5V.Note 3:PSR for single+5V supply tested with VEE=0,VCC=+4.5V to+5.5V;PSR for dual 5V supply tested with VEE=-4.5V to-5.5V,VCC=+4.5V to+5.5V.Channel-to-Channel IsolationCHISO102dBSpecified at DC深圳市万瑞尔科技有限公司 美信代理商 0755-28269789 http:/MAX4450/MAX4451Ultra-Small,Low-Cost,210MHz,Si

20、ngle-SupplyOp Amps with Rail-to-Rail Outputs 4_Typical Operating Characteristics(VCC=+5V,VEE=0,VCM=+2.5V,AVCL=+1V/V,RF=24,RL=100 to VCC/2,TA=+25C,unless otherwise noted.)4-6100k10M100M1M1G SMALL-SIGNAL GAIN vs.FREQUENCYMAX4450-01FREQUENCY(Hz)GAIN(dB)-5-4-3-2-10123VOUT=100mVp-p4-6100k10M100M1M1GLARGE

21、-SIGNAL GAIN vs.FREQUENCYMAX4450-02FREQUENCY(Hz)GAIN(dB)-5-4-3-2-10123VOUT=2Vp-p0.4-0.6100k10M100M1M1G GAIN FLATNESS vs.FREQUENCYMAX4450-03FREQUENCY(Hz)GAIN(dB)-0.5-0.4-0.3-0.2-0.100.10.20.3VOUT=100mVp-p100k10M1M100M1G OUTPUT IMPEDANCE vs.FREQUENCYMAX4450-04FREQUENCY(Hz)IMPEDANCE()1000.010.11102ND H

22、ARMONIC3RD HARMONIC-10-100100k100M10M1M DISTORTION vs.FREQUENCY-70-90-30-500-60-80-20-40MAX4450-05FREQUENCY(Hz)DISTORTION(dBc)VOUT=2Vp-pAVCL=+1V/V-10-100100k100M10M1MDISTORTION vs.FREQUENCY-70-90-30-500-60-80-20-40MAX4450-06FREQUENCY(Hz)DISTORTION(dBc)2ND HARMONIC3RD HARMONICVOUT=2Vp-pAVCL=+2V/V-10-

23、100100k100M10M1M DISTORTION vs.FREQUENCY -70-90-30-500-60-80-20-40MAX4450-07FREQUENCY(Hz)DISTORTION(dBc)2ND HARMONIC3RD HARMONICVOUT=2Vp-pAVCL=+5V/V-100-70-80-90-60-50-40-30-20-100040020060080010001200 DISTORTION vs.RESISTIVE LOAD MAX4450-08RLOAD()DISTORTION(dBc)2ND HARMONIC3RD HARMONICfO=5MHzVOUT=2

24、Vp-pAVCL=+1V/V-100-70-80-90-60-50-40-30-20-1000.51.01.52.0 DISTORTION vs.VOLTAGE SWING MAX4450-09VOLTAGE SWING(Vp-p)DISTORTION(dBc)fO=5MHzAVCL=+1V/V3RD HARMONIC2ND HARMONIC深圳市万瑞尔科技有限公司 美信代理商 0755-28269789 http:/MAX4450/MAX4451Ultra-Small,Low-Cost,210MHz,Single-SupplyOp Amps with Rail-to-Rail Outputs

25、 _501000100 DIFFERENTIAL GAIN AND PHASE-0.01000.0050.0150.025IREDIFF PHASE(degrees)DIFF GAIN(%)MAX4450-10IRE-0.0050.0200.010-0.040.020.040.080.1200.100.06-0.020-100100k10M100M1M1GCOMMON-MODE REJECTION vs.FREQUENCYMAX4450-11FREQUENCY(Hz)CMR(dB)-90-80-70-60-50-40-30-20-10PSR(dB)0-100100k10M100M1M1G PO

26、WER-SUPPLY REJECTION vs.FREQUENCYMAX4450-12FREQUENCY(Hz)-90-80-70-60-50-40-30-20-1000.40.20.61.21.41.00.81.60100 150 200 25050300 350 400 450 500 OUTPUT VOLTAGE SWING vs.RESISTIVE LOADMAX4450-13RLOAD()OUTPUT VOLTAGE SWING(V)VCC-VOHVOL-VEEMAX4450-14INPUT50mV/divOUTPUT50mV/div SMALL-SIGNAL PULSE RESPO

27、NSEVOLTAGE(V)20ns/divRF=24AVCL=+1V/VINPUT25mV/divOUTPUT50mV/div SMALL-SIGNAL PULSE RESPONSEMAX4450-15VOLTAGE(V)20ns/divRF=500AVCL=+2V/VINPUT10mV/divOUTPUT50mV/div SMALL-SIGNAL PULSE RESPONSEMAX4450-16VOLTAGE(V)20ns/divRF=500AVCL=+5V/VINPUT1V/divOUTPUT1V/div LARGE-SIGNAL PULSE RESPONSEMAX4450-17VOLTA

28、GE(V)20ns/divRF=24AVCL=+1V/VINPUT500mV/divOUTPUT1V/div LARGE-SIGNAL PULSE RESPONSEMAX4450-18VOLTAGE(V)20ns/divRF=500AVCL=+2V/VTypical Operating Characteristics(continued)(VCC=+5V,VEE=0,VCM=+2.5V,AVCL=+1V/V,RF=24,RL=100 to VCC/2,TA=+25C,unless otherwise noted.)深圳市万瑞尔科技有限公司 美信代理商 0755-28269789 http:/M

29、AX4450/MAX4451Ultra-Small,Low-Cost,210MHz,Single-SupplyOp Amps with Rail-to-Rail Outputs 6_Typical Operating Characteristics(continued)(VCC=+5V,VEE=0,VCM=+2.5V,AVCL=+1V/V,RF=24,RL=100 to VCC/2,TA=+25C,unless otherwise noted.)20ns/divINPUT1V/divINPUT1V/divLARGE-SIGNAL PULSE RESPONSEMAX4450-19VOLTAGE(

30、V)RF=500AVCL=+2V/V110k100101k100k1M10MVOLTAGE NOISE vs.FREQUENCY MAX4450-20FREQUENCY(Hz)110100RL=100VOLTAGE NOISE(pA/Hz)911101312151416020010030040050250150350450 500ISOLATION RESISTANCE vs.CAPACITIVE LOADMAX4450-22CLOAD(pF)RISO()LARGE SIGNAL(VOUT=2Vp-p)SMALL SIGNAL(VOUT=100mVp-p)0501001502002503000

31、200100300400500600700800SMALL-SIGNAL BANDWIDTH vs.LOAD RESISTANCEMAX4450-23RLOAD()BANDWIDTH(MHz)8001001k10kOPEN-LOOP GAIN vs.RESISTIVE LOAD2010MAX4450-24RLOAD()OPEN-LOOP GAIN(dBc)4030506070CURRENT NOISE(pA/Hz)110k100101k100k1M10MCURRENT NOISE vs.FREQUENCY MAX4450-21FREQUENCY(Hz)110100RL=100MAX4451CR

32、OSSTALK vs.FREQUENCYMAX4450-25FREQUENCY(Hz)CROSSTALK(dB)-140-80-100-120-60-40-2002040600.1M1M10M100M1G深圳市万瑞尔科技有限公司 美信代理商 0755-28269789 http:/Detailed DescriptionThe MAX4450/MAX4451 are single-supply,rail-to-rail,voltage-feedback amplifiers that employ current-feed-back techniques to achieve 485V/s s

33、lew rates and210MHz bandwidths.Excellent harmonic distortion anddifferential gain/phase performance make these ampli-fiers an ideal choice for a wide variety of video and RFsignal-processing applications.The output voltage swings to within 55mV of each sup-ply rail.Local feedback around the output s

34、tageensures low open-loop output impedance to reducegain sensitivity to load variations.The input stage per-mits common-mode voltages beyond the negative sup-ply and to within 2.25V of the positive supply rail.Applications InformationChoosing Resistor ValuesUnity-Gain ConfigurationThe MAX4450/MAX445

35、1 are internally compensated forunity gain.When configured for unity gain,the devicesrequire a 24 resistor(RF)in series with the feedbackpath.This resistor improves AC response by reducingthe Q of the parallel LC circuit formed by the parasiticfeedback capacitance and inductance.Inverting and Noninv

36、erting ConfigurationsSelect the gain-setting feedback(RF)and input(RG)resistor values to fit your application.Large resistor val-ues increase voltage noise and interact with the amplifi-ers input and PC board capacitance.This cangenerate undesirable poles and zeros and decreasebandwidth or cause osc

37、illations.For example,a nonin-verting gain-of-two configuration(RF=RG)using 1kresistors,combined with 1pF of amplifier input capaci-tance and 1pF of PC board capacitance,causes a poleat 159MHz.Since this pole is within the amplifier band-width,it jeopardizes stability.Reducing the 1k resis-tors to 1

38、00 extends the pole frequency to 1.59GHz,but could limit output swing by adding 200 in parallelwith the amplifiers load resistor.Table 1 lists suggest-ed feedback and gain resistors,and bandwidths forseveral gain values in the configurations shown inFigures 1a and 1b.Layout and Power-Supply Bypassin

39、gThese amplifiers operate from a single+4.5V to+11Vpower supply or from dual 2.25V to 5.5V supplies.Forsingle-supply operation,bypass VCCto ground with aMAX4450/MAX4451Ultra-Small,Low-Cost,210MHz,Single-SupplyOp Amps with Rail-to-Rail Outputs _7Pin DescriptionPINOUTVEEIN+INA-OUTAVCCIN-INB+INB-OUTBIN

40、A+421856731Amplifier Output2Negative Power Supplyor Ground(in single-supply operation)3Noninverting InputAmplifier A InvertingInputAmplifier A Output5Positive Power Supply4Inverting InputAmplifier B NoninvertingInputAmplifier B InvertingInputAmplifier B OutputAmplifier A NoninvertingInputINRGVOUT=1+

41、(RF/RG)VINRFRTORTINROVOUTMAX445 _Figure 1a.Noninverting Gain ConfigurationINRGVOUT=-(RF/RG)VINRFRTORSRTINROVOUTMAX445 _Figure 1b.Inverting Gain ConfigurationFUNCTIONMAX4450NAMEMAX4451深圳市万瑞尔科技有限公司 美信代理商 0755-28269789 http:/Note:RL=RO+RTO;RTINand RTOare calculated for 50 applications.For 75 systems,RT

42、O=75;calculate RTINfrom the following equation:0.1F capacitor as close to the pin as possible.If operat-ing with dual supplies,bypass each supply with a 0.1Fcapacitor.Maxim recommends using microstrip and stripline tech-niques to obtain full bandwidth.To ensure that the PCboard does not degrade the

43、amplifiers performance,design it for a frequency greater than 1GHz.Pay care-ful attention to inputs and outputs to avoid large para-sitic capacitance.Whether or not you use a constant-impedance board,observe the following design guide-lines:Dont use wire-wrap boards;they are too inductive.Dont use I

44、C sockets;they increase parasitic capaci-tance and inductance.Use surface-mount instead of through-hole compo-nents for better high-frequency performance.Use a PC board with at least two layers;it should beas free from voids as possible.Keep signal lines as short and as straight as possi-ble.Do not

45、make 90 turns;round all corners.Rail-to-Rail Outputs,Ground-Sensing Input The input common-mode range extends from(VEE-200mV)to(VCC-2.25V)with excellent common-mode rejection.Beyond this range,the amplifier outputis a nonlinear function of the input,but does not under-go phase reversal or latchup.Th

46、e output swings to within 55mV of either power-supply rail with a 2k load.The input ground sensingand the rail-to-rail output substantially increase thedynamic range.With a symmetric input in a single+5Vapplication,the input can swing 2.95Vp-p and the out-put can swing 4.9Vp-p with minimal distortio

47、n.Output Capacitive Loading and StabilityThe MAX4450/MAX4451 are optimized for AC perfor-mance.They are not designed to drive highly reactiveloads,which decrease phase margin and may produceexcessive ringing and oscillation.Figure 2 shows a cir-cuit that eliminates this problem.Figure 3 is a graph o

48、fthe optimal isolation resistor(RS)vs.capacitive load.Figure 4 shows how a capacitive load causes exces-sive peaking of the amplifiers frequency response ifthe capacitor is not isolated from the amplifier by aresistor.A small isolation resistor(usually 20 to 30)placed before the reactive load preven

49、ts ringing andoscillation.At higher capacitive loads,AC performanceis controlled by the interaction of the load capacitanceand the isolation resistor.Figure 5 shows the effect of a27 isolation resistor on closed-loop response.Coaxial cable and other transmission lines are easilydriven when properly

50、terminated at both ends with theircharacteristic impedance.Driving back-terminatedtransmission lines essentially eliminates the linescapacitance.Table 1.Recommended Component ValuesMAX4450/MAX4451Ultra-Small,Low-Cost,210MHz,Single-SupplyOp Amps with Rail-to-Rail Outputs 8_-25+25-10+10-5+5-2+2-1+149.