User's Guide SLOU161A–April2003–RevisedApril2010 THS7530EVM This user's guide describes the characteristics, operation, and use of the THS7530EVM. This evaluation module (EVM) is a demonstration fixture for the THS7530 wideband, fully differential, variable-gain amplifier, and provides 50-Ω input and output termination for easy evaluation with common 50-Ω test equipment.Acompletecircuitdescription,schematicdiagram,andbillofmaterialsareincluded. Contents 1 Description ................................................................................................................... 2 2 THS7530EVMDesign ...................................................................................................... 3 3 EVMSchematicandBillofMaterials ..................................................................................... 6 ListofFigures 1 THS7530EVMSchematic.................................................................................................. 2 2 AC-CoupledSingle-EndedInputwithAC-CoupledDifferentialOutput.............................................. 4 3 AC-CoupledDifferentialInputwithAC-CoupledDifferentialOutput.................................................. 4 4 DC-CoupledSingle-EndedInputwithDC-CoupledDifferentialOutput.............................................. 5 5 DC-CoupledDifferentialInputwithDC-CoupledDifferentialOutput................................................. 5 6 CompleteEVMSchematic................................................................................................. 6 7 EVMBoardLayout:Top(Left)andBottom(Right)..................................................................... 6 PowerPADisatrademarkofTexasInstruments. Allothertrademarksarethepropertyoftheirrespectiveowners. SLOU161A–April2003–RevisedApril2010 THS7530EVM 1 SubmitDocumentationFeedback Copyright©2003–2010,TexasInstrumentsIncorporated

Description www.ti.com 1 Description ThissectiongivesageneraldescriptionoftheTHS7530EVM. 1.1 General Description TheTHS7530isadc-coupledwidebandwidthamplifierwithvoltage-controlledgain.Theamplifierhas highimpedancedifferentialinputsandlowimpedancedifferentialoutputswithhighbandwidthgaincontrol, outputcommonmodecontrol,andoutputvoltageclamping.Itispackagedina14-pinPWPPowerPAD™ package.TheschematicoftheTHS7530EVM,asfurnished,isshowninFigure1. GND +VCC +VCC TP2 J2 +VCC TP1 J1 3.92RkW1 G+ TP4 TP3 C9 C17 C16 C15 C1 C2 + FB1 R2 G+ Open 0.1mF 0.1mF 0.1mF 0.1mF 6.8mF 1kW C3 0.1mF C4 0W T1 U1 1:1 +VCC NC 1 THS7530 14 VCL+ C_R9 39 pF J3 IN+ 1 65 R1 7kW R4 VNICN+ 23 1132 VVCOLC–M R9 24.9W 3 J4 49.9W VIN–4 11 VOUT– 4 3 4 R12 C7 G+ 5 10 VOUT+ 5 1kW 0.1mF G– 6 9 0CW5 PD 7 8 VVSS+– R15 24.9W 6 1 1:1 Shutdown PowerPAD T2 C_R15 39 pF JP1 TLV2371IDBVT TLV2371IDBVT TLV2371IDBVT +VCC +VCC +VCC U2 U3 U4 VCL+ TP8 VCL– TP9 VOCM TP10 4 6 4 6 4 6 IN– 1 R24 VCL+ IN– 1 R25 VCL– IN– 1 R26 VOCM 10Rk2W1 3 IN+2 5 10W C12 10Rk2W2 3 IN+2 5 10W C13 10Rk2W3 3 IN+2 5 10W C14 0.1mF 0.1mF 0.1mF D1 IN4148 Figure1.THS7530EVMSchematic 1.2 Board Description • Powerinput:+5V at+V (J1),testpointTP1 DC CC • Commonreference:GND(J2),testpointTP2andTP4 • Signalinput:IN+(J3) • Signaloutput:OUT– (J4) • Gaincontrol:Gain(R2),testpointTP3 • Highclampvoltage:VCL+(R21),testpointTP8 • Lowclampvoltage:VCL– (R22),testpointTP9 • Outputcommon-modevoltage:VOCM(R23),testpointTP10 • Powerdown:SHD(JP1)openfornormaloperation(pinlabeledPDinthedatasheet). 2 THS7530EVM SLOU161A–April2003–RevisedApril2010 SubmitDocumentationFeedback Copyright©2003–2010,TexasInstrumentsIncorporated

www.ti.com THS7530EVMDesign 2 THS7530EVM Design ThissectiondiscussesgeneraldesignconsiderationsfortheTHS7530EVM. 2.1 General Design Considerations TheTHS7530isdesignedfornominal5-VpowersupplyfromV toV . S+ S– Theamplifierhasfullydifferentialinputs,V andV ,andfullydifferentialoutputs,VOUT+andVOUT–. IN+ IN– Theinputsarehighimpedanceandoutputsarelowimpedance.Externalresistorsarerequiredfor impedancematchingandterminationpurposes. Forbestperformance,theinputandoutputcommon-modevoltageshouldbemaintainedatthemidpoint betweenV andV .Theoutputcommon-modevoltageiscontrolledbythevoltageappliedtoVOCM.If S+ S– leftunconnected,VOCMissetatmid-railbyinternalresistors.Theinputcommon-modevoltagemustbe setbyexternalmeans. VoltageappliedfromV toV controlsthegainofthepartwith38.8dB/Vgaincompliance.Theinput G– G+ canbedifferentialorsingle-ended.V mustbemaintainedwithin±0.8VofV . G– S– VCL+andVCL–areinputsthatlimittheoutputvoltageswingoftheamplifier.Thevoltagesappliedsetan absolutelimitonthevoltagesattheoutput. PDinputcontrolsthepowerdownfeatureofthepart.ATTLlowputsthepartintopowersavingsmode, andahighorunconnectedinputputsthepartinnormaloperatingmode. Powersupplybypasscapacitorsarerequiredforproperoperation.A6.8-mFtantalumbulkcapacitoris recommendediftheamplifierislocatedfarfromthepowersupplyandmaybesharedamongother devices.Aceramic0.1-mFcapacitorisrecommendedwithin0.1in(0,254cm)ofthedevicepowerpin. Theceramiccapacitorshouldbelocatedonthesamelayerastheamplifiertoeliminatetheuseofvias betweenthecapacitorsandthepowerpinifpossible. SLOU161A–April2003–RevisedApril2010 THS7530EVM 3 SubmitDocumentationFeedback Copyright©2003–2010,TexasInstrumentsIncorporated

THS7530EVMDesign www.ti.com 2.2 Other Circuits Figure2throughFigure5showsomedifferentvariationsofcircuitconfigurationsthatcanbebuiltby modifyingtheEVM. V = 5V S+ FB 1 kW 1 kW 0.1mF 0.1mF 6.8mF V CL+ 49.9W 49.9W 33 pF V CL– 0.1mF 24.9W 0.1mF VIN VOUT– V THS7530 OCM V OUT+ PD 24.9W 0.1mF V G– 0.1mF 33 pF V V S– G+ Figure2.AC-CoupledSingle-EndedInputwithAC-CoupledDifferentialOutput V = 5V S+ FB 1 kW 1 kW 0.1mF 0.1mF 6.8mF V CL+ 33 pF 24.9W 24.9W V CL– 0.1mF 24.9W 0.1mF VIN+ VOUT– VOCM THS7530 V V IN– OUT+ 0.1mF PD 24.9W 0.1mF V G– 0.1mF 33 pF V V S– G+ Figure3.AC-CoupledDifferentialInputwithAC-CoupledDifferentialOutput 4 THS7530EVM SLOU161A–April2003–RevisedApril2010 SubmitDocumentationFeedback Copyright©2003–2010,TexasInstrumentsIncorporated

www.ti.com THS7530EVMDesign V = 5V S+ FB 1 kW 1 kW 0.1mF 0.1mF 6.8mF V CL+ 33 pF 49.9W 49.9W V CL– 24.9W VIN VOUT– VOCM THS7530 V OUT+ PD 24.9W V G– 0.1mF 33 pF V V S– G+ Figure4.DC-CoupledSingle-EndedInputwithDC-CoupledDifferentialOutput V = 5V S+ 1 kW 1 kW FB 0.1mF 0.1mF 6.8mF V CL+ 33 pF 24.9W 24.9W V CL– 24.9W VIN+ VOUT– V THS7530 OCM V V IN– OUT+ PD 24.9W V G– 0.1mF 33 pF V V S– G+ Figure5.DC-CoupledDifferentialInputwithDC-CoupledDifferentialOutput SLOU161A–April2003–RevisedApril2010 THS7530EVM 5 SubmitDocumentationFeedback Copyright©2003–2010,TexasInstrumentsIncorporated

EVMSchematicandBillofMaterials www.ti.com 3 EVM Schematic and Bill of Materials Thissectionprovidesacompleteschematicdiagram,boardlayouts,andbillofmaterialsforthe THS7530EVM. 3.1 Complete EVM Schematic Figure6showsthecompleteEVMschematic.ThetwoPCBlayersareillustratedinFigure7. GND +VCC +VCC TP2 J2 +VCC TP1 J1 R1 G+ TP4 GND +VCC TP3 + FB1 R2 G+ C17 C16 C15 C1 C2 C3 +VCC J3 Z4 C4 R3 IN+ U1 R6 T1 +VCC R5 NC 1 THS7530 14 VCL+ R9 J4 1 65 R7 R4 VNICN+ 23 1132 VVCOLC–M 3 VIN– 4 11 VOUT– 4 3 4 R12 C7 +VCC VG+ 5 10 VOUT+ 5 VG– 6 9 VS+ 6 1 J6 Z17 C5 R14 PD 7 GND 8 VS– R15 R16 J5 PowerPAD C9 R19 R18 JP1 +VCC +VCC +VCC U2 U3 U4 VCL+ TP8 VCL– TP9 VOCM TP10 4 6 4 6 4 6 IN– 1 R24 VCL+ IN– 1 R25 VCL– IN– 1 R26 VOCM R21 3 IN+2 5 C12 R22 3 IN+2 5 C13 R23 3 IN+2 5 C14 D1 Figure6.CompleteEVMSchematic Figure7.EVMBoardLayout:Top(Left)andBottom(Right) 6 THS7530EVM SLOU161A–April2003–RevisedApril2010 SubmitDocumentationFeedback Copyright©2003–2010,TexasInstrumentsIncorporated

www.ti.com EVMSchematicandBillofMaterials 3.2 EVM Bill of Materials Table1liststhebillofmaterialsfortheTHS7530EVM. Table1.THS7530EVMBillofMaterials ItemNo. Description Size RefDes Qty PartNumber 1 Bead,ferrite,3A,80Ω 1206 FB1 1 (Steward)HI1206N800R–00 2 Capacitor,tantalum,6.8mF,35V,10% D C2 1 (AVX)TAJD685K035R 3 Capacitor,ceramic,0.1mF,X7R,16V 0508 C1 1 (AVX)0508YC104KAT2A 5 Capacitor,ceramic,0.1mF,X7R,50V 0805 C3,C7,C12,C13, 8 (AVX)08055C104KAT2A C14,C15,C16, C17 6 Diode,Schottky,20V,0.5A SOD-123 D1 1 (DiodesInc.)B0520LW–7 7 Resistor,10Ω,1/8W,1% 0805 R24,R25,R26 3 (PHYCOMP) 9C08052A10R0FKHFT 8 Resistor,24.9Ω,1/8W,1% 0805 R9,R15 2 (PHYCOMP) 9C08052A24R9FKHFT 9 Resistor,1kΩ,1.8W,1% 0805 R7,R12 2 (PHYCOMP) 9C08052A1001FKHFT 10 Resistor,3.92kΩ,1/8W,1% 0805 R1 1 (PHYCOMP) 9C08052A3921FKHFT 11 Resistor,0Ω,1/4W 1206 C4,C5 2 (PHYCOMP) 9C12063A0R00JLHFT 12 Resistor,49.9Ω,1/4W,1% 1206 R4 1 (PHYCOMP) 9C12063A49R9FKRFT 13 Pot.,ceramic,1/4inchsquare,1kΩ R2 1 (Bourns)3362P–1–102 14 Pot.,ceramic,1/4inchsquare,10kΩ R21,R22,R23 3 (Bourns)3362P–1–103 15 IC,TLV2371 SOT-23 U2,U3,U4 3 (TI)TLV2371IDBVT 16 Transformer,1:1 CD542 T1,T2 2 (Mini-Circuits)ADT1-1WT 17 Connector,edge,SMAPCBJack J3,J4 2 (Johnson)142–0701–801 18 Jack,bananareceptacle,0.25-indiameterhole J1,J2 2 (HHSmith)101 19 Header,0.1-inCtrs,0.025-insquarepins 2POS. JP1 1 (Sullins)PZC36SAAN 20 Shunts JP1 1 (Sullins)SSC02SYAN 21 Testpoint,black TP2,TP3,TP4 3 (Keystone)5001 22 Testpoints,red TP1,TP8,TP9, 4 (Keystone)5000 TP10 23 Standoff,4–40Hex,0.625-inLength 4 (Keystone)1804 24 Screw,Phillips,4–40,.250-in 4 SHR–0440–016–SN 25 IC,THS7530 U1 1 (TI)THS7530PWP 26 Board,printedcircuit 1 (TI)EDGE#6441987 SLOU161A–April2003–RevisedApril2010 THS7530EVM 7 SubmitDocumentationFeedback Copyright©2003–2010,TexasInstrumentsIncorporated

REVISIONHISTORY www.ti.com REVISION HISTORY ChangesfromOriginal(April,2003)toARevision......................................................................................................... Page • Updateddocumentformattocurrentstandards ...................................................................................... 1 • ChangedFigure2throughFigure5tocorrectproblemwithoutputindication ................................................... 4 NOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion. 8 RevisionHistory SLOU161A–April2003–RevisedApril2010 SubmitDocumentationFeedback Copyright©2003–2010,TexasInstrumentsIncorporated

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