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Consider the fully cascoded diff-amp in Figure 11.37 . Assume
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Microelectronics: Circuit Analysis and Design
- the transistor in the circuit above has gm=0.11mS and ro=33Kohm. Given the following condition: R1=770Kohm, R2=890Kohm, RD=5.4Kohm, R3=20Kohm, R6=6.9Kohm, Rsig=2Kohm, determine the input impedance of the amplifier in Kohm.arrow_forwardThe ac equivalent circuit for an amplifier is shown. Assume the capacitors have infinite value, RI =750Ω, RB =100 kΩ, RC =100 kΩ, and R3 =100 kΩ. Calculate the input resistance and output resistance for the amplifier if the BJT Q-point is (75 μA, 10 V). Assume βo =100 and VA =75 V.arrow_forwardIf the circuit of problem 2 is configured as a common-emitter amplifier, calculate the resulting voltage and current gain. Assume a load resistor of 1k ohm. Circuit of problem 2: determine the operating point of a universal trasnsistor DC bias cirucit when Vcc=15V, R1=10k ohm, R2=2.2k ohm, Rc=680 ohm, Re=100 ohm. Assume beta (b)=200 and Vbe=0.72V.arrow_forward
- The ac equivalent circuit for an amplifier is shown. Assume the capacitors have infinite value, RI = 100 kΩ, RG = 10 MΩ, RD = 560 kΩ, and R3 = 1.5 MΩ. Calculate the voltage gain for the amplifier if the MOSFETQ-point is (10 μA, 5 V). Assume Kn = 100 μA/V2 and λ = 0.02 V−1.arrow_forwardThe outer surface of a transistor is cooled convectively by a fan-induced flow of air ata temperature of 25 °C and a pressure of 1 atm. The transistor’s outer surface area is 5x 10 -4 m 2 . At steady state, the electrical power to the transistor is 3 W. Negligible heattransfer occurs through the base of the transistor. The convective heat transfercoefficient is 100 W/m 2 K.Determinei. the rate of heat transferbetween the transistor and theair, in Wii. the temperature at thetransistor’s outer surface, in °C.arrow_forwardKnowing the equation of collector current IC for the transistor amplifier circuit, please calculate the current and voltage stabilization factors. Rc=2000ohm Re=500ohm Rb=500ohm Rb=1000ohm Beta0=200arrow_forward
- In the circuit given in the figure, 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 = 166 kΩ?NOTE-1: The output impedance r0 of the transistor will be taken into the calculations.NOTE-2: Capacitors are negligible at mid-band frequency.arrow_forwardPlease complete 1-3 In the Common Emitter Amplifier shown, the emitter current is found to be equal to IE =1mA. Assuming that the collector resistance RC = 1 kΩ, Calculate The internal emitter resistance, r’e. The gain of this amplifier, Av. The voltage gain in dB. Given an input voltage of 50 mV, calculate the output voltage.arrow_forwardGiven the diferrential amplifier with a constant-current source at the emitter (instead of the resistor RE),Assume Q1, Q2, and Q3 are identical transistors with β=hfe=100 and VBE=0.7V. (a) Determine the common-mode gains Acs (for single-ended) and Acd (for double ended).For AC analysis: The constant current source has an infinite equivalent resistance.(b) Determine the common-mode rejection ratio CMRR for single-ended output.(c) Determine the common-mode rejection ratio CMRR for double-ended output.arrow_forward
- Consider the emitter follower in Figure 1 with VCC = 10V, I = 100 mA, and RL = 100Ω. (a) Find the power dissipated in Q1 and Q2 under quiescent conditions. (vO = 0V) (b) For a sinusoidal output voltage of maximum possible amplitude (neglecting VCEsat ), find the average power dissipation in Q1 and Q2. Also find the load power.arrow_forward1) Find the operating point of the transistor by drawing the load line of the BJT transistor circuit given below. Calculate the voltage values VE and VC. (β = 100, VBE = 0.7 V, R1 = 10 KΩ, RC = 4.7 KΩ, RE = 3.3 KΩ, VCC = 10 V, VEE = - 4 V)arrow_forward(a) What are the Q-points for the transistors in the amplifier as shown if VDD = 9 V, VSS = 9 V, ISS = 40 μA, RSS = 1.25 MΩ, and RD = 300 kΩ? Assume Kp = 200 μA/V2, γ = 0.6 V0.5, 2φF = 0.6 V, and VTO = −1 V. (b) What are the differential-mode gain, common-mode gain, CMRR, and differential-mode and common-mode input resistances?arrow_forward
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