Question

tran 0 100m 99m 0.001m ;op 0 100m 99m 0.001m VDD V1 + RG1 RG3 RD1 10k 1 Meg 1 Meg 12 Cc2 RD2 10 1p M2 M1 Rsig vsig vin G Cc1 HH 47 2N7002 2N7002 Cc3 500 S: vout HE 1р V2 RG2 800k Cs RS1 7.429 47 RG4 1 Meg RS2 300 RL 1 Meg SINE(O 10m 5k)

*Note : MOSFET-2N7002 Parameter => Vt : 1.47V, kn = 0.048 A/V^2

1. Obtain [ the Voltage and current ] of [ each node and branch ] at DC bias point (operating point) in the common-source + source-follower figure above.

2. Obtain the small-signal equivalent model of the figure above at DC bias point , then obtain open-circuit voltage gain Avo, input resistance Rin, output resistance Rout.

Answer 1

V= 1.429 xu8( 3.863 tu. 9 1) Joly stage. I 12101 van tex soxtos lok 0.8812 +0.8 vy us 7.uzak vun 5-33 (vl 200k ID= kn (vus-utrip Ina 48(5-33--140)? (mA) Ib u8( 3.863-vs) 2 2+² .427 V5) VS 7.42GX48 (14.93-7.227 vstup ²) 356.592 u² - 2756.39 us & 5323.92 = 0 V= 3.952 (v) (af) 3.78 (v) Nusa 5.33- 3.982 = 1.3A8 < vont vus: 5-33-2.78 cl 1155 Xitoy vusa 1,55(v) IDI u8 (3. 863-3.78)2 = 0.331 mA)

VD = 12- 10x 0.331 8. 69 (u) VDS 8.69 -3.28 = 4.913lv Stage 2 : 12111 vur Dla Qv Blob VD ID=4826-Ve- 1.472 (na) ID= 48(4.53-vs} (MA) vy tour Iueto33 im Va 300 (48) 14.53-4} 14.ucur2_9.06ust 20:521) 14.4062 – 130.464 ust 295.502 luuu 131.46uut 295.502=0 (or 1 4.003(W) VCE 5.127(ul 0.88 < uthy vusa 6- 5.127= vusa 6- 4.003 = 1.997> uth 43 (4.53- 4.603)? 13.3.(MA) 30 11.879 VD- 12- 10 x 13.37 VIO NDI: 1.8634(v armas zxu ( vagonun) = 2*481 155-HUA) 4.68xūtoy Sony gma-2km (vuur vm. 2x48(1.997 - 1. UP) 50.500 luer,

2) Smau sinal equivalent arcut 192 vi T + vgs, Ilok • Ref: 10 82 Ren nugs ube P Rin 300 gim Ri Refra 2 Reras 0.811 do a 0- 8x) o.un (Mary 0.44 (mary o.uunior vi a vi o.uuylor +500 Vg2= Refa= nga a (lokll0.5m) emingen 10x108x500 x 103 x 7.68x603 vi 510 vg2=-15129 vi Rc- 3collim & 300 Usa= 300 x 50.592х 103 1982 vood 15. 18 vaße N12 16.18 T6.18 vga 0.938 vg2 og vo= Zo vgs. 300 + (1 -0.938) vg vor – 18.54 x 75.2avi Avvo 13.9.–1396

9 Rin= 0.44 x 106 +500 440.5 (kr) Rett vin=o vgg1=0 I vg2=0 apply kch at un gma vgs, gnyugszt in= vn vn 300 in Vn 300 50.592 4103 (on valtina olx 300 ina val z oo 50.592x153) t un Rout- 18.54 (n)