實(shí)驗(yàn)一、共源級(jí)放大器設(shè)計(jì)

1、實(shí)驗(yàn)一、共源極放大器設(shè)計(jì)一. 實(shí)驗(yàn)?zāi)康? 掌握共源極放大器的設(shè)計(jì)方法。2 掌握共源極放大器的調(diào)試與性能指標(biāo)的測(cè)試方法。二. 預(yù)習(xí)要求1. 根據(jù)指標(biāo)要求，設(shè)計(jì)并計(jì)算電路的有關(guān)參數(shù)。2 畫(huà)出所設(shè)計(jì)的電路，列出元件的值。3 .制定出實(shí)驗(yàn)方案，選擇實(shí)驗(yàn)用的儀器設(shè)備。4. 寫(xiě)出預(yù)習(xí)報(bào)告三共源極放大器的設(shè)計(jì)方法1確定放大電路(選擇場(chǎng)效應(yīng)管)。2. 手工計(jì)算場(chǎng)效應(yīng)管的直流轉(zhuǎn)移特性曲線(xiàn)，并將特性曲線(xiàn)描繪在方格紙上，在曲線(xiàn)上 確定出MOS管的飽和區(qū)，確定輸入電壓、輸出電壓的范圍。3確定靜態(tài)工作點(diǎn) Q： (Vimin+Vimax) /24.確定電路中的其他參數(shù)的值。四電路的設(shè)計(jì)要點(diǎn)：1. 電路圖設(shè)計(jì)參見(jiàn)附錄。2調(diào)

2、整靜態(tài)工作點(diǎn)：可修改場(chǎng)效應(yīng)管的w和電阻值。3動(dòng)態(tài)調(diào)試：從放大器的輸入端輸入f=1kHz , Ui=100mV的正弦信號(hào)(加直流偏置，靜態(tài)工作點(diǎn)Q)。若放大器的輸出波形頂部或底部出現(xiàn)明顯失真，說(shuō)明靜態(tài)工作點(diǎn)沒(méi)有設(shè)置在 恰當(dāng)?shù)奈恢?，?yīng)調(diào)整電路使輸出波形無(wú)明顯失真。若頂部和底部同時(shí)出現(xiàn)失真，說(shuō)明靜態(tài)工作點(diǎn)選擇恰當(dāng)。此時(shí)應(yīng)減小輸入信號(hào)幅度，使輸出波形不失真。4. 測(cè)量Au及f。5. 對(duì)測(cè)量結(jié)果進(jìn)行驗(yàn)算并進(jìn)行誤差分析(1) 列出靜態(tài)工作點(diǎn)的測(cè)量值(2) 性能指標(biāo)的測(cè)量值(3) 根據(jù)調(diào)整后的電路參數(shù)，列出理論計(jì)算值。(4) 將理論計(jì)算值與測(cè)量值進(jìn)行比較算出它們的相對(duì)誤差五. 實(shí)驗(yàn)內(nèi)容1. 按以下指標(biāo)要求，

3、設(shè)計(jì)一個(gè)共源極放大器。1) 電壓放大倍數(shù)|Aj >42) 負(fù)載電阻 RL=10k Q3) 下限頻率fi_w 20Hz，上限頻率 如>200kHz2對(duì)所設(shè)計(jì)的電路進(jìn)行設(shè)計(jì)、調(diào)試。3對(duì)電路的性能指標(biāo)進(jìn)行測(cè)試仿真，并對(duì)測(cè)量結(jié)果進(jìn)行驗(yàn)算和誤差分析。六. 實(shí)驗(yàn)報(bào)告要求實(shí)驗(yàn)報(bào)告包括以下內(nèi)容：1. 項(xiàng)目名稱(chēng)2. 已知條件和指標(biāo)要求3. 所需的軟件仿真語(yǔ)句4. 電路的設(shè)計(jì)過(guò)程，所選用的電路原理圖。5. 調(diào)試過(guò)程，標(biāo)有經(jīng)調(diào)試后所采用的元件數(shù)值的電路圖。6 主要技術(shù)指標(biāo)的計(jì)算值、仿真值7 數(shù)據(jù)處理及誤差分析&電路的改進(jìn)建議和實(shí)驗(yàn)中的體會(huì)附錄：1. 所需的軟件仿真語(yǔ)句.inelude .op .

4、de .print .tranac DEC 5 1 100MEG 交流仿真語(yǔ)句 .print ae vdb(out) vm(out)交流輸出語(yǔ)句2. 需要設(shè)計(jì)的電路圖n I圖2電阻負(fù)載的PMOS共源極電路圖1電阻負(fù)載的NMOS共源極電路F屮 0UT)P *直 4丄 OUT )+Fy1*+e+s圖4圖3 NMOS做二極管連接負(fù)載的 NMOS驅(qū)動(dòng)共源極電路自行繪制PMOS做二極管連接負(fù)載的 NMOS驅(qū)動(dòng)共源極電路、NMOS做二極管連接負(fù)載的 PMOS驅(qū)動(dòng)共源極電路、PMOS做二極管連接負(fù)載的 PMOS驅(qū)動(dòng)共源極電路。圖4固定偏置NMOS驅(qū)動(dòng)共源極電路自行繪制電流源負(fù)載共源極電路。若仿真不完可在下次

5、繼續(xù) A_A實(shí)驗(yàn)報(bào)告在做實(shí)驗(yàn)三時(shí)交.inelude路徑并加負(fù)載電容以下文件與數(shù)據(jù)僅供參考，但均經(jīng)過(guò)仿真測(cè)試，實(shí)際使用注意 圖1電阻負(fù)載的NMOS共源極電路的 TSPICE文件 一、直流傳輸特性* SPICE netlist written by S-Edit Win32 7.03* Written on May 5, 2007 at 20:20:56* Waveform prob ing comma be.options probefilename="gongyuanji_amp_R_NMOS.dat"+ probesdbfile="go ngyua

6、nji_amp_Nmos.sdb"+ probetopmodule="r_5".in clude "D:Ta nn erta nn erTSpice70modelsml2_125.md"* Main circuit: r_5M1 OUT IN Gnd Gnd NMOS L=2u W=22u AD=66p PD=24u AS=66p PS=24u R2 OUT Vdd 5K TC=0.0, 0.0* End of main circuit: r_5vin IN Gnd 1.0vvdd Vdd Gnd 5.0.dc lin source vin 0

7、 5.0 0.02.print dc v(OUT) v(IN)5.5kvleaaLrov0 5 0 55.0v(OUT)N5winV i.op= ( V Imin +V Imax) /2=1.7VV o.op= ( VOmin +V Omax) /2=3.4V二、查看電阻值對(duì)傳輸特性的影響* SPICE netlist written by S-Edit Win32 7.03* Written on May 5, 2007 at 20:20:56* Waveform prob ing comma be.options probefilename="gongyuanji

8、amp R NMOS.dat"+ probesdbfile="go ngyuanji_amp_Nmos.sdb"+ probetopmodule="r_5".in elude "D:Ta nn erta nn erTSpice70modelsml2_125.md"* Main circuit: r_5M1 OUT IN Gnd Gnd NMOS L=2u W=22u AD=66p PD=24u AS=66p PS=24uR2 OUT Vdd LOAD TC=0.0, 0.0* End of main circuit: r_5

9、vin IN Gnd 1.0vvdd Vdd Gnd 5.0.print dc v(OUT) v(IN).PARAM LOAD=5K.step lin param LOAD 5k 65k 20k.dc lin source vin 0 5.0 0.025.55.00 5 0 5N5v(OUT)win三、查看模型對(duì)電壓傳輸特性的影響* SPICE netlist written by S-Edit Win32 7.03* Written on May 5, 2007 at 20:20:56* Waveform prob ing comma be.options probefilen

10、ame="gongyuanji_amp_R_NMOS.dat"+ probesdbfile="go ngyuanji_amp_pmos.sdb"修改md文件+ probetopmodule="r_5".in clude "D:Ta nn erta nn erTSpice70modelsml1_typ.md" * Main circuit: r_5M1 OUT IN Gnd Gnd NMOS L=2u W=22u AD=66p PD=24u AS=66p PS=24uR2 OUT Vdd LOAD TC=0.0, 0

11、.0* End of main circuit: r 5 vin IN Gnd 1.0 vvdd Vdd Gnd 5.0print de v(OUT) v(IN).PARAM LOAD=5K.de lin source vin 0 5.0 0.02N5vin (V)四、查看直流工作點(diǎn)* Main circuit: r_5M1 OUT IN Gnd Gnd NMOS L=2u W=22u AD=66p PD=24u AS=66p PS=24uR2 OUT Vdd LOAD TC=0.0, 0.0 * End of main circuit: r_5 vin IN Gnd 1.8 vvdd Vdd

12、 Gnd 5.0 .op.PARAM LOAD=5K此結(jié)果用文本察看* T-Spice 7.16 Simulation Sun Jun 03 14:24:32 2007D:Ta nn erta nn ers on gm on iN5(CAZM)* Comma nd line: tspice -o D:Ta nn erta nn ers ongmon iN5.out D:Ta nn erta nner'songmon iN5* T-Spice Win32 7.16.20020124.16:49:19* Operat ing System: Win dows NT/95* Warni ng

13、 T-SPICE : un used model "pmos"*SEDIT: probesdbfile="go ngyuanji_amp_ nm os.sdb" *SEDIT: probetopmodule="r_5"*SEDIT: Alter blocks = 0* Device and node coun ts:MOSFET geometries - 1JFETs-0Diodes - 0* MOSFETs - 1* BJTs - 0* MESFETs - 0Capacitors - 0In ductors - 0Resistors

14、 - 1Mutual in ductors - 0* Tran smissi on lines - 0 Coupledtran smissi on lines - 0*Voltage sources - 2Current sources - 0*VCVS -0VCCS -0*CCVS -0CCCS -0*V-c on trol switch - 0I-c on trol switch - 0*Macrodevices - 0Functionalmodel in sta nces - 0*Subcircuits - 0Subcircuit in sta nces - 0*Independent

15、nodes- 1Boun daryno des - 3*Total no des - 4* * 1 WARNING MESSAGES GENERATED*SEDIT: Alter=0*SEDIT: An alysis types DCOP 1 ACMODEL 1 AC 0 TRANSIENT 0 TRANSFER 0 NOISE 0* BEGIN NON-GRAPHICAL DATADC ANALYSIS-v(OUT) = 2.8488e+000一 丄_輸入為 =8伏的輸出 亠v(Vdd) = 5.0000e+000v(IN) = 1.8000e+000i(vin) = O.OOOOe+OOO

16、i(vvdd) = -4.3025e-004* END NON-GRAPHICAL DATA* BEGIN NON-GRAPHICAL DATAAC SMALL-SIGNAL MODELS0M1MODELnmosTYPENMOSID4.30e-004VGS1.80e+000VDS2.85e+000VBS0.00e+000VTH7.23e-001VDSAT7.87e-001RS0.00e+000RD0.00e+000GM6.89e-004GDS1.95e-005GMB0.00e+000GBD1.01e-012GBS1.01e-012CGS5.75e-014CGD6.36e-015CGB0.00e

17、+000CBD7.38e-015CBS1.78e-0141R2RVDROPCURRENT5.00e+003-2.15e+000-4.30e-004Eleme nt n ame cross-refere nee:0 : M11 : R2* END NON-GRAPHICAL DATA* Parsi ng* Setup* DC operat ing poi nt0.00*0.00 sec onds0.01 seco ndsseconds* Total* End of T-Spice output file五、動(dòng)態(tài)調(diào)試0.01 seco nds* Main circuit: r_5M1 OUT in

18、 Gnd Gnd NMOS L=2u W=22u AD=66p PD=24u AS=66p PS=24uR2 OUT Vdd LOAD TC=0.0, 0.0* End of main circuit: r_5.PARAM LOAD=5K.in clude "D:Ta nn erta nn erTSpice70modelsml2_125.md" .tra n 2u 6mc2 out GND 800ffvdd vdd GND 5.0 vin in Gnd sin 2.5 0.5 1000 0.0 0.0 0.0.print tran in outN5Time (ms)此輸出明

19、顯失真調(diào)靜態(tài)工作點(diǎn)電壓由2.5伏降為1.9伏vin in Gnd sin 1.9 0.5 1000 0.0 0.0 0.0調(diào)靜態(tài)工作點(diǎn)電壓由2.5伏降為1.8伏vin in Gnd sin 1.8 0.5 1000 0.0 0.0 0.0w(eN5Time (ms)N5ECTime (ms)六、察看電壓增益.in elude "D:Ta nn erta nn erTSpice70modelsml2_125.md"* Main circuit: r_5M1 OUT IN Gnd Gnd NMOS L=2u W=22u AD=66p PD=24u AS=66p PS=24uR2

20、 OUT Vdd LOAD TC=0.0, 0.0* End of main circuit: r_5vin in gnd 0.5 AC 2 90vvdd Vdd Gnd 5.0.ac DEC 5 1 100MEG.PARAM L0AD=5K.print ac vdb(out) vp(out)* Vdb=20lg (vout/vin )電壓增益的常用表示方法vp為電壓的相位)g dre.s 3 e ag.h novp" - _lll_ 1i i linnL"U HHi_Jl> 1 1 11 III11 1 l> II IM1 i 1 fe 11 IN11 1 I

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