PGA PGA Programmable Gain AMPLIFIER FEATURES DIGITALLY PROGRAMABLE GAINS G VV CMOSTTLCOMPATIBLE - PDF document

PGA103 FEATURESAPPLICATIONS V+VÐ GAINA O = G Â¥ VIN ¨ International Airport Industrial Park Â¥ Mailing Address: PO Box 11400 Â¥ Tucson, AZ 85734 Â¥ Street Address: 6730 S. Tucson Blvd. Â¥ Tucson, AZ 85706Tel: (520) 746-1111 Â¥ Twx: 910-952-1111 Â¥ Cable: BBRCORP Â¥ Telex: 066-6491 Â¥ FAX: (520) 889-1510 Â¥ Immediate Product Info: (800) 548-61321993 Burr-Brown CorporationPDS-1208BPrinted in U.S.A. November, 1993 PGA103 ¨ SPECIFICATIONS PARAMETERCONDITIONSMINTYPMAXUNITS G = 1Tvs TemperatureT to Tvs Power SupplyV307010351035 || pF150nA100pA/16nV/11nV/11nV/2.8pA/0.3pA/76pAp-p0.02%0.05%0.2%2ppm/10ppm/30ppm/0.003% of FSR0.005% of FSR0.01% of FSRVoltage, Positive(V+) Ð3.5(V+) Ð2.5VNegative(VÐ) +3.5(VÐ) +2.5V1000pF25mA1.5MHz750kHz250kHzSlew RateV10V9V/Overload Recovery50% Overdrive2.5Digital Low VoltageÐ5.60.8V2V+V PGA103SPECIFICATIONS PARAMETERCONDITIONSMINTYPMAXUNITS18VCurrentV3.5mAÐ40+85Ð40+125 The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumesno responsibility for the use of this information, and all use of such information shall be entirely at the userÕs own risk. Prices and specifications are subject to changewithout notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrantany BURR-BROWN product for use in life support devices and/or systems. Top ViewDIP/SO-8 Supply Voltage.................................................................................Analog Input Voltage Range.....................................................VÐ to V+Logic Input Voltage Range........................................................VÐ to V+Output Short Circuit (to ground)............................................ContinuousOperating Temperature................................................Ð40Storage Temperature....................................................Ð40Junction Temperature...................................................................+150Lead Temperature (soldering,10s)..............................................+300MODELPACKAGENUMBERPGA103P8-Pin Plastic DIP006PGA103USO-8 Surface-Mount182 234 8765 V+VOVÐNCA0A1GroundVIN ELECTROSTATICMODELPACKAGETEMPERATURE RANGEPGA103P8-Pin Plastic DIPÐ40PGA103USO-8 Surface-MountÐ40 PGA103 ¨ PADFUNCTION6VÐ8V+ PGA103 DIE TOPOGRAPHY Internally connected to VÐ power supply. MILS (0.001")MILLIMETERSDie Size69 x 105 51.75 x 2.67 Die Thickness20 30.51 Min. Pad Size4 x 40.1 x 0.1BackingGold TYPICAL PERFORMANCE CURVES = +25 = NCNC 101001k10k100k1M 10k100k1M10M Ð10 PGA103 TYPICAL PERFORMANCE CURVES = +25 = 2ms/div50mV/div G=10G=100 Current Noise (pA/ÖHz) Voltage Noise (nV/ÖHz) Ð50Ð250255075100125 LARGE SIGNAL RESPONSE2ms/div5V/div 1101001k10k100k1M Limited 1101001k10k100k1M 100 PGA103 ¨ APPLICATION INFORMATION Figure 3 shows a circuit used to trim the offset voltage of thePGA103. An op amp buffers the trim voltage to provide alow impedance at the ground terminal. This is required tomaintain accurate gain. Remember that the logic inputs, A0and A1, are referenced to this ground connection, so thelogic threshold voltage will be affected by the trim voltage.This is insignificant if the offset adjustment is used only totrim offset voltage. If a large offset is used (greater than0.1V), be sure that the logic input signals provide valid logiclevels when referred to the voltage at the ground terminal,pin 3. GAINS1ClosedClosed10ClosedOpen100OpenClosedNot ValidOpenOpenpin 3. This must be a low-impedance connection to assure in series with the and Athe logic table in Figure 1. The digital inputs interface is invalid. This logic code will not cause damage, butis selected. The output will recover when a valid code isimmediately selects a new gain. Switching time of the logicanalog circuitry. Locate the latch circuitry as far as practical V 0.8V (V+) 0A1PGA103 V+VÐ S1S0 100mV. INVO = G (VIN Ð VTRIM)2 13VTRIM(1)OPA602 100kW +15VÐ15V PGA103 VINVO = G Â¥ VINV+ +15VVÐ Ð15V21378641 10 100 Not Valid0 0 0 1 GAINA 0.1µF0.1µF A1A0 PGA103 amplifier input.FIGURE 4. Programmable Gain Instrumentation Amplifier. G = 0.1, 1, 10 VINVO11.3kWD1 Ð15VA1A0D1, D2; IN4148102kWAccepts inputs to ±120V.A1A0D2 PGA205 PGA103 INÐVIN+V+VÐV+VÐG1 = 1, 2, 4, 8G2 = 1, 10, 100213768G = G1 Â¥ G24A1A01 2 10 100 0 0 0 1 GAIN0 0 0 VO MODELCHARACTERISTICSINA103Low Noise, 1nV/INA105G = 1 Difference AmpINA106G = 10 Difference AmpINA114Resistor-Programmed Gain, PrecisionINA111FET Input, High Speed IAINA131Precision, G = 100 IA FIGURE 6. Instrumentation Amplifier with Programmable Gain Output Amp.FIGURE 5. Wide Input Voltage Range Amplifer. PGA103 INÐVIN+G1G2 = 1, 10, 100G = G1 Â¥ G2A1VO 0 PACKAGINGINFORMATION OrderableDevice Status(1) PackageType PackageDrawing Pins PackageQty EcoPlan(2) Lead/BallFinish MSLPeakTemp(3) PGA103P OBSOLETE PDIP P 8 TBD CallTI CallTI PGA103U ACTIVE SOIC D 8 75 Green(RoHS&noSb/Br) CUNIPDAU Level-3-260C-168HR PGA103UE4 ACTIVE SOIC D 8 75 Green(RoHS&noSb/Br) CUNIPDAU Level-3-260C-168HR(1)Themarketingstatusvaluesaredefinedasfollows:ACTIVE:Productdevicerecommendedfornewdesigns.LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect.NRND:Notrecommendedfornewdesigns.Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartinanewdesign.PREVIEW:Devicehasbeenannouncedbutisnotinproduction.Samplesmayormaynotbeavailable.OBSOLETE:TIhasdiscontinuedtheproductionofthedevice.(2)EcoPlan-Theplannedeco-friendlyclassification:Pb-Free(RoHS),Pb-Free(RoHSExempt),orGreen(RoHS&noSb/Br)-pleasecheckhttp://www.ti.com/productcontentforthelatestavailabilityinformationandadditionalproductcontentdetails.TBD:ThePb-Free/Greenconversionplanhasnotbeendefined.Pb-Free(RoHS):TI'sterms"Lead-Free"or"Pb-Free"meansemiconductorproductsthatarecompatiblewiththecurrentRoHSrequirementsforall6substances,includingtherequirementthatleadnotexceed0.1%byweightinhomogeneousmaterials.Wheredesignedtobesolderedathightemperatures,TIPb-Freeproductsaresuitableforuseinspecifiedlead-freeprocesses.Pb-Free(RoHSExempt):ThiscomponenthasaRoHSexemptionforeither1)lead-basedflip-chipsolderbumpsusedbetweenthedieandpackage,or2)lead-baseddieadhesiveusedbetweenthedieandleadframe.ThecomponentisotherwiseconsideredPb-Free(RoHScompatible)asdefinedabove.Green(RoHS&noSb/Br):TIdefines"Green"tomeanPb-Free(RoHScompatible),andfreeofBromine(Br)andAntimony(Sb)basedflameretardants(BrorSbdonotexceed0.1%byweightinhomogeneousmaterial)(3)MSL,PeakTemp.--TheMoistureSensitivityLevelratingaccordingtotheJEDECindustrystandardclassifications,andpeaksoldertemperature.ImportantInformationandDisclaimer:TheinformationprovidedonthispagerepresentsTI'sknowledgeandbeliefasofthedatethatitisprovided.TIbasesitsknowledgeandbeliefoninformationprovidedbythirdparties,andmakesnorepresentationorwarrantyastotheaccuracyofsuchinformation.Effortsareunderwaytobetterintegrateinformationfromthirdparties.TIhastakenandcontinuestotakereasonablestepstoproviderepresentativeandaccurateinformationbutmaynothaveconducteddestructivetestingorchemicalanalysisonincomingmaterialsandchemicals.TIandTIsuppliersconsidercertaininformationtobeproprietary,andthusCASnumbersandotherlimitedinformationmaynotbeavailableforrelease.InnoeventshallTI'sliabilityarisingoutofsuchinformationexceedthetotalpurchasepriceoftheTIpart(s)atissueinthisdocumentsoldbyTItoCustomeronanannualbasis. 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