Consider the BiCMOS diff-amp in Figure 11.44 , biased at
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Microelectronics: Circuit Analysis and Design
- 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_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_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_forward
- The ac equivalent circuit for an amplifier is. Assume the capacitors have infinite value, RI = 10 kΩ, RB = 5 MΩ, RC = 2 MΩ, and R3 = 3.3 MΩ. Calculate the voltage gain for the amplifier if the BJT Q-point is (1 μA, 1.5 V). Assume βo = 40 and VA = 50 V. Rework the given problem if IC is increased to 10 μA, and the values of RC, RB, and R3 are all reduced by a factor of 10.arrow_forwardWhat 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_forwardOne NPN transistor is used in the self biasing arrangement. The circuit components values are Vcc = 4.5V, Rc = 1.5K, RE = 0.27 KO, R2 = 2.7 KQ and R1 = 27K. If B=44. a. Find the stability factor b. Determine the Quiescent point Q (VCE, IC)arrow_forward
- What is the voltage gain of the common-emitter amplifier as shown? Assume βF = 135, VCC = VEE = 10 V, R1 = 20 kΩ, R2 = 62 kΩ,RC = 13 kΩ, and RE = 3.9 kΩ.arrow_forwardSOLVE NUMBER 2 .1. Solve the output voltage if the gain is 24 db with aninput of 5mV.? 2. Assume a load resistor, RL of 2.2kΩs and a supply voltage of 24v. Calculate the Collector current (Ic) flowing through the load resistor when the transistor is switched fully "ON", assume Vce = 0, & β = 100. Also find the value of the Emitter resistor, Re with a voltage drop of 1.3v across it, R1, R2, and Ib. Assume also a value of 9 times Ib flowing through the resistor R2, while 10 times Ib flowing through R1.arrow_forwardA 5-V, 10-MHz oscillator have a rise/falltime of 10ns and a 50% duty cycle is applied to a gate. Determine the value of the capacitance such that the 5th harmonic is reduced by 20 dB in the gate voltage Vg(t).arrow_forward
- The common-emitter discrete amplifier shown has the following values: RB1 = 400 kΩ, RB2 = 100 kΩ, RC = 4 kΩ, RE = 500 Ω, Rsig = 1 kΩ, RL = 10 kΩ and VCC = 15 V. Assume VBE = 0.7 V and β = 90. Also assume that the capacitors are shorts for ac. The bias circuit has been analyzed and IC = 1.65 mA, Rin = 1.34 kΩ and Rout = RC. If vsig = 10 mVpeak, determine the peak value of vout.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_forwardFor a non -inverting operational amplifier, Rf = 80 kΩ , Ri = 6 kΩ fT = 2.35 MHz, Determine the closed loop lower critical frequency fc(cl) in kHzarrow_forward
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