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(a) Design the Widlar current source such that
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Microelectronics: Circuit Analysis and Design
- What is the voltage gain (Av) of the circuit when = 100, r0 = 40 kΩ, RB = 360 kΩ, RC = 3.3 kΩ, RE = 220 Ω, Rs = 15 kΩ and RL = 379 kΩ? NOTE-1: The output impedance r0 of the transistor will be taken into account in the calculations. NOTE-2: Capacitors are negligible at mid-band frequency.arrow_forwardA common emitter amplifier as shown in Figure Q2 has the following parameters, β = 100, R1= 33K, R2 = 10K, RC = 3K3, RE = 1K, ro = and VBE = 0.7 V.State all assumptions made.i. Check whether βRE>>10R2 is satisfiedii. Use the appropriate approach of analysis to determine the Quiescent point; IBQ,ICQ and VCEQ.iii. Draw the small signal equivalent circuit. Determine input impedance, Zin, outputimpedance, Zout, and the voltage gain, AV, if RL=20kΩ.arrow_forwardFor the given amplifier circuit, asnwer the following question: a) For R1= 12 kΩ, R2= 10 kΩ, RE= 1 kΩ, RC = 1.2 kΩ, determine the following dc parameters: VB, VE, IE, and VC . (assume stiff voltage divider) b) For r’e = 5.5 Ω, R1= 12 kΩ, R2= 10 kΩ, RE= 1 kΩ, RC = 1.2 kΩ, RL = 7.5 kΩ, RS = 500 Ω, determine the input resistance at the base ( Rin(base) ), the total input resistance ( Rin(tot) ), voltage gain (Av) ,and attenaution. c) Assume that the overall voltage gain A’v = 120, the dc collector voltage VC = 6.3 V, and Vin = 15 mV rms. Determine the ac collector voltage (Vc) , then draw the total collector voltage waveform d) For r’e = 5.5 Ω, RE= 1 kΩ, RC = 1.2 kΩ, RL = 7.5 kΩ, determine the voltage gain if C2 is removed. Explain the effect of removing C2 on gain stability.arrow_forward
- Since β = 200, Vcc = 20 V, R1 = 47 kΩ, R2 = 6.8 kΩ, RC = 4.7 kΩ, RE = 2.45 kΩ in the circuit in the figure, what would be the value of the input impedance (Zi) of the system? NOTE: The output impedance of the transistor r0 will be neglected.arrow_forwardSince Vcc = 25 V, Vi = 2 mV, RB = 470 kΩ, RC = 1.5 kΩ, RE1 = 470 Ω, RE2 = 1.2 kΩ, RL = 42 kΩ and β = 110 in the circuit in the figure, the value of the output voltage (Vo) find it. NOTE-1: Capacitors are negligible at mid-band frequency. NOTE-2: The output impedance (r0) of the transistor will be neglected.arrow_forwardA- Calculate the common-mode output voltage and A, voltage gain for the circuit below, where V; = 5mV, Ry = 50K, Rg = 45K0, 1y = ryy = rp = 20K0 and B=p=p,=175.arrow_forward
- Since Vcc = 12 V, Vin = 690 mV, RB = 780 kΩ, RC1 = 27.9 Ω, RC2 = 25.4 Ω, RE = 470 Ω, RL = 47 Ω and β1 = β2 = 100 in the circuit in the figure Find the current (IL) flowing through RL? NOTE-1: VBE1 = VBE2 = 0.7 V will be taken. NOTE-2: Output impedances of transistors (r0) will be neglected. a. 16,56 mA b. 23,46 mA c. 8,28 mA d. 17,94 mA e. 20,70 mA f. 13,80 mA g. 26,22 mA h. 11,04 mAarrow_forwardPlease answer ASAP, I'll upvote... The circuit shown is a common source amplifier with a current mirror bias. It is given that the NMOS (M1) parameters are μoCox = 3mA/V2, VTH,n = 0.5V and λ = 0.02 and the PMOS (M2 and M3) parameters are μoCox = 1mA/V2 and VTH,p = −0.6V . The PMOS transistor M3 does not have channel length modulation while PMOS transistor M2 has λ = 0.02. It is also given that the dimensions of M2 and M3 have equal widths of 5µm and lengths of L2 = 3µm and L3 = 1.5µm, respectively. M1 has length of L1 = 1µm and width of W1 = 2µm. Find the drain current of M2 given that IBIAS = 2mA and VOUT = 2.5V.arrow_forwardFor the circuit shown in Fig. 1 below, the transistor parameters are B =150, VBE =0.7V and VT=26mV. a) Determine the operating point parameters. b) Draw the small signal equivalent circuit based on the re mode c) Determine: i Gain of the transistor, Av Input impedance, Za i. Gain with signal, An V. Output voltage, given that V, =30mVSinotarrow_forward
- Since Vcc = 12 V, Vin = 690 mV, RB = 780 kΩ, RC1 = 27.9 Ω, RC2 = 25.4 Ω, RE = 470 Ω, RL = 47 Ω and β1 = β2 = 100 in the circuit in the figure Find the current (IL) flowing through RL? NOTE-1: VBE1 = VBE2 = 0.7 V will be taken. NOTE-2: Output impedances of transistors (r0) will be neglected.arrow_forwardThe ac equivalent circuit for an amplifier is shown . Assume the capacitors have infinite value, RI = 10 kΩ, RB = 5 MΩ, RC = 1.5 MΩ, and R3 = 3.3 MΩ. Calculate the input resistance and output resistance for the amplifier if the BJT Q-point is (2 μA, 2 V). Assume βo = 40 and VA = 50 V.arrow_forwardAnswer ASAP. I'll upvote. Thank you. Given: The circuit shown is a common source amplifier with a current mirror bias. It is given that the NMOS (M1) parameters are μoCox = 3mA/V2, VTH,n = 0.5V and λ = 0.02 and the PMOS (M2 and M3) parameters are μoCox = 1mA/V2 and VTH,p = −0.6V . The PMOS transistor M3 does not have channel length modulation while PMOS transistor M2 has λ = 0.02. It is also given that the dimensions of M2 and M3 have equal widths of 5µm and lengths of L2 = 3µm and L3 = 1.5µm, respectively. M1 has length of L1 = 1µm and width of W1 = 2µm. Sketch the small signal model of transistor M3 (Hint: Is there any small signal in any terminal ofM3? If yes, then where is it? If no, then what happens to the small signal model?).arrow_forward
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