2. Calculate lo. Ves, and estimate the small-signal resistance looking into the drain of the Mo...
Please help, and explain as much as possible. Thank
you!
2. Consider an N-channel MOSFET circuit where the gate and drain terminals are shorted to- gether2 as shown in Figre 2. Assume that the MOSFET has trans-conductance parameter of gm = 0.5mA/V and the threshold voltage of 0.7V (a) Identify in which region the n-channel MOSFET is operating (Triode region or Saturation region)? (b) Write MATLAB code to compute the drain current for the following gate-to-source voltage, Vcs Ves-VDs 0,1,2,3,4,5,6,7...
Question 1: 7.33 +15V 1O MO R-200k 16n 7k MO 7.33 Figure P7.33 shows a discrete-circuit amplifier. The input signal is coupled to the gate through a very large capacitor (shown as infinite). The transistor source is connected to ground at signal frequencies via a very large capacitor (shown as infinite). The output voltage signal that develops at the drain is coupled to a load resistance via a very large capacitor (shown as infinite). All capacitors behave as short circuits...
Rsig Nahyan vgs ( gmugs, r01 RDS Vsig ) Ril Consider the small signal equivalent circuit of an amplifier shown above. The parameters are given to be: R1 = 3000, R2 = 10160, R2=100%, RD=RL=50 Rsig = 202, VGS1=3.5V. Vt = 0.5V and kn = 1mA/V^2. The transistor output resistances are represented by ro1, ra2 with both the transistors in saturation and having |MAL= 40V and same DC current flowing through them Find the small signal parameter of the MOSFET:...
Problem 2 In the CS amplifier circuit below, the input signal vois coupled to the gate through a very large capacitor (shown as infinite). The transistor source is connected to ground at signal frequencies via a very large capacitor. The output voltage signal that develops at the drain is coupled to a load resistance via a very large capacitor a) If the transistor has V, = 1 V, and k',W/L = 2 mA/V2, find VGS, ID, and VD- b) Find...
1. Consider the CMOS source follower (or common drain) amplifier shown below. The NMOS transistor operates in the saturation region. C, C2 are coupling capacitors. 「en C2 Rs 2ok The small-signal model for NMOS transistor is given below gnUgs The parameters are given below: (1) Please derive the complete small-signal circuit for the amplifier (10pts). (2) Apply Miller Effect to the small-signal circuit from step (1) to estimate the 3dB bandwidth of the amplifier. (Note: applying Miller Effect introduces a...
ANSWERS:
Vgs = 350 mV
Vds = 3 V
Av = -40
Rout = 1000 kOhm
Example: Common source voltage amplifier • Considering the circuit below - Check that the MOSFET works under saturation – Calculate Av = Vout/Vin under small-signal - Evaluate the equivalent Rout under small-signal Rout 20uA Vpp = 5V R = 100k12 VTH = 250mV B = 4000uA/V2 2-0 VOD VOUT GS
Qb. The figure below shows a different NMOS FET in a circuit. The bias resistors Rei and Roz are chosen such that the drain current lo#1mA, and Ves=1.819V. It is operating in the saturation region. Find the small signal gain A-v./V. Write the value of A, in the answer box. NOTE: 1) Here we are interested in the mid-band small signal gain, where for the small signal analysis the capacitors shown in figure 2 can be considered as short circuits,...
Q6. An amplifier circuit using an n-MOSFET is shown in Fig. Q6. The n-MOSFET has the following parameters: K'-1 mA/V2 and λ-0.02 w. v°' is a small signal AC voltage ource 8V 8V Vout Ra 2.56 mA Fig. Q6 (a) Calculate the DC gate voltage, Va. (b) Assuming that the n-MOSFET is operating in the saturation region and neglecting channel length modulation, calculate the threshold voltage, VrHN, given that the voltage drop across the de current sorce, Inas, has been...
Question 2: a) Find the value of Vgs? b) If the threshold voltage of the NMOS 0.7V, identify the region of operation for the MOSFET (i.e. Triode Saturation or Cutoff) v,= 10V SATE e) Write the formula to calculate Current (ID) for the circuit in Figure 1 Fig. 1 Question 3: a) Find the value of Vgs* b) If the threshold voltage of the NMOS 0.7V, identify the region of operation for the MOSFET (i.e. Triode, Saturation or Cutoff) c)...
ANSWER ALL QUESTIONS: 0-1. Study the circuit diagram given in Figurel and answer the following questions. (1.5 marks) i.) When the square wave voltage is + 5V, the transistor will be in which region? c) Saturation ii.) When the square wave voltage is OV, the transistor will be in which region? a) Cutoff region b) Saturation c) Active region iii.) When transistor operates in Saturation region, what are the values of Vce, and Ic? iv.) When transistor operates in Cutoff...