For the CS amplifier in problem 1, find the 3-dB frequency, fH. O a. 15 KHz O b. 2 GHz O c. 315 MHZ Od 212 MHZ It is r
Posted: Fri Apr 29, 2022 9:06 am
- For The Cs Amplifier In Problem 1 Find The 3 Db Frequency Fh O A 15 Khz O B 2 Ghz O C 315 Mhz Od 212 Mhz It Is R 1 (32.8 KiB) Viewed 17 times
- For The Cs Amplifier In Problem 1 Find The 3 Db Frequency Fh O A 15 Khz O B 2 Ghz O C 315 Mhz Od 212 Mhz It Is R 2 (72.46 KiB) Viewed 17 times
V/V
For the CS amplifier in problem 1, find the 3-dB frequency, fH. O a. 15 KHz O b. 2 GHz O c. 315 MHZ Od 212 MHZ
It is required to analyze the frequency response of the IC current source-loaded CS amplifier for the case Rsig = 0. Here, IBIAS = 100 PA, (W/L)2 = 2(W/L)3, Cgs1 = 50 fF, Cgd1 = 10 ff, Cdb1 = Cdb2 = 20 fF, Cgd2 = 10 ff, unCox = 500 HA/V^2, (W/L)1 = 20, and VA1 = |VA2| = 6 V. For simplicity, assume that the signal voltage at the gate of Q2 is zero. Find the low- frequency (dc) gain VO/Vsig. Hint: The total capacitance at the output node = Cdb1 +Cdb2 +Cgd2, and the equivalent circuit is as shown. Note that we are not neglecting output capacitances and that Rsig =0. Q3 Q2 Cgdi HI + i IBIAS ov Vsig Cgsl HB Vg1 Emi Vgs! rol 12 Cdbi Caь2 HH Cada V Rsig IH IH = = = = = Hi Q RL CL V sig