Question

whys is the gain showing to be 20? shouldn't it be 10?

Q (normal) V(vs) V(yout) 2.0V RE 1.6V .measure tran Voutpp pp V(vout) 1.2V 10k .measure tran Vspp pp V(vs) 0.8V .measure tran gain param 20 log10(Voutpp/Vspp) V1 0.4V 0.0V 5 Rs VSAA 1k AC -0.4V- Vout OP27 -0.8V- -1. 2V- V2 SINE(0.2 1k) -1.6V- tran 10m -2.0V- 10ms Oms 2ms 4ms 6ms 8ms Draft17.log Draft17.raw Cursor 1 Q Search V(vout) Source Step = 3.0303% Source Step= 33.3333 % Source Step Source Step Source stepping succeeded in finding the operating point Vert: Horz: 3.7646203ms 1.9873634V 63.6364% 93.9394% Cursor 2: V(vs) Vert Horz: 3.1969217ms 188.55505mV voutpp: PP(v (vout))-3.99617 FROM 0 TO 0.01 0 TO 0.01 Vspp: PPv)0.399015 gain: 20*log10(voutpp/vspp)= Diff (Cursor 2-Cursor 1): Horz -567.69857us Vert: -1.7988083V Date: Sun Jun 2 09:11:35 2019 Freq: 1.7614982KHZ Slope: 3168.6 Total elapsed time: 0.228 seconds V(vout) *****. 27dB 180° RF 18dB- 150° .measure AC ft when mag(V(vout)/V(vs) ) =1 10k 9dB- 120° .measure AC MaxGain max mag(V(vout)) OdB 900 .measure AC f-3dB when mag(V(vout)) = MaxGain-3 V1 -9dB 60° -18d B- 30° -27dB- Rs Vs U Vout 0° -361B- 1k AC OP27 -30° -45 d B- V2 -60° -54d B- SINE(0.2 1k -90° -63DB .ac oct 10 1 1G -72DB- -120 ° 1Hz 10HZ 10ØHZ 1KHZ 10KHZ 1MHZ 10MHZ 1GHZ Cursor T Gmin ste V(vout) Starting source stepping with srcstepmethod=0 Source Step= 3.0303% Freq: Mag: 3.9985082MHZ 2.9872652dB 86.180206 Phase: ource Ste 63.6364 Source Step = 93.9394% Source stepping succeeded in finding the operating point. Group Delay: -3.296931ns Cursor 2: ft: mag(v(vout ) /v (vs ) ) 1 AT 7.41927e+06 maxgain: MAX(mag (v (vout ) ) ) (20.0686dB, 0°) FROM 1 TO le+09 f-3db: mag(v(vout)) maxgain-3 AT 1.12767e+06 Freq: Mag: N/A N/A Phase: N/A- Date: Sun Jun 2 09:43:40 2019 Group Delay: - N/A Total elapsed time: 0.116 seconds

Answer 1

Answer Gain is Calenlatd in two scales (i) linear scale Gi) dB scale fi) dBscale (i) tincar cale Vout (P-P) Vs CP-P =20l Gain nain P-P-feak to peak Veltage Vout (P- 3.71617 y 3,99617 O.399619 O.399619 V 3.99617 Grain 30x0.999997836 O.399619 19.9999565 9.99994 GrainaodB in dB Lunits Gain 10 t is claor that Gain i forom 0f 10 ilineasr scale and 2odB n dB-Scale