(a) Find the differential-mode input resistance, based on the the small-signal differential input voltage and current for the BJT differential pair defined in Fig. 2(a) (b) Find the common-mode input...
Problem 2: BJT Small-Signal Voltage Amplifiers In the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you wi meet two additional amplifier architectures-one that is based on dual DC supplies combined with a DC current source, and the other that utilizes a pnp BJT with single-supply biasing In both problems (below) you need to manually find the amplifier's Q-point (that is, the DC values of Ic and...
Problem 2: BJT Small-Signal Voltage Amplifiers in the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you will meet two additional amplifier architectures- one that is based on dual DC supplies combined with a DC current source, and the other that utilizes a pnp BJT with single-supply biasing. In both problems (below) you need to manually find the amplifier's Q-point (that is, the DC values of Ic...
Can u answer these questions with explanation!! Evaluate the differential input resistance (in kOhms) for a BJT differential amplifier with emitter degeneration resistors of 328.70hms, Beta of 31.63, common DC current source of 1.75mA with output resistance of 475kOhms. C2 C1 le Ro Find the common mode rejection ratio for a MOSFET differential pair with randomly selected 4kOhm E12 resistors as the drain load biased by a current source of 5mA with output impedance of 44kOhm. W/L= 8 and μ.cox-4mA/V...
3.1. For the BJT differential pair configuration shown below, assume the input transistor beta is very large. Then find the differential signal vd = vB1 − vB2 sufficient to cause: 3.2. A differential amplifier resembling that below uses I = 200μA, RC = 10kohm and VCC = 3V. Assume beta is very large 3.4.For the emitter follower in the figure below, given VCC = 15 V, VEE = −15 V, RL = 1 kohm and beta = 100 for all...
In a small signal voltage amplifier using a pnp transistor shown below, the voltage gain is 350.2. The value of a-0.95. Find the equivalent model emitter resistance re in Ohms if Rc-4.1K2. The BJT is operating at room temperature and VBE 0.7V RE-10K CCI vi Cc2 Rc In a small signal voltage amplifier using a pnp transistor shown below, the voltage gain is 350.2. The value of a-0.95. Find the equivalent model emitter resistance re in Ohms if Rc-4.1K2. The...
A common-emitter BJT amplificr is shown in Fig.8.1. Note the DC biasing values and the BJTsmall-signalmodel parameters from the class-signment #9 on DC Bia ing. Neglect the value of Rs in your calculations, k1 Rs-a k2: 1· Cal ulatethesmall-agalpannetas ofthe amplifi randcompletethecalculated valuesinTable8-1 Smalls-signal voltage gai, AVk Small-signal input resistance,k, Small-signaloutput resistance, Ro VW RC 2k C2 RB 570k Rs C1 1 10uP 0.1m 1 Vs CE RE 2k SINE(0 1mV 1kHz 0 0 00) tran 0 2ms 0 1us...
The circu with (WL)1-4 50/0.5 and Iss 21 0.5 mA. (a) Calculate the small-signal voltage gain. (b) Determine the maximum output voltage swing if the input CM level is 1.3 V. Figure 5.23 (a) Differential pair with current-source load; (b) circuit for calculation of Gmi (c) circuit for calculation of Rout uit of Fig. 5.23(a) is designed VDD M3 M4 Vout Vin Iss The circu with (WL)1-4 50/0.5 and Iss 21 0.5 mA. (a) Calculate the small-signal voltage gain. (b)...
shows two versions of a common-emitter amplifier and (i Fig. 1 (a) Find the expression for the small-signal voltage gain of Fig. 1(i) in terms of relevant small- signal parameters. (b) Over what frequency range will the gain of the Fig. 1(i) circuit be the same as that of the Fig. 1(i) circuit? (c) Which of the two circuits will show less variation in its de biasing in the presence of processing or temperature variations? Justify your answer. (d) Explain,...
Rsig/2 Figure P8.45 8.46 Find the voltage gain and the input resi amplifier shown in Fig. P8.46 assuming β = 100. resistance of the +5 V 25 x1 0 02 250 Ω 250 Ω Rin 0.2 mA Figure P8.46 Rsig/2 Figure P8.45 8.46 Find the voltage gain and the input resi amplifier shown in Fig. P8.46 assuming β = 100. resistance of the +5 V 25 x1 0 02 250 Ω 250 Ω Rin 0.2 mA Figure P8.46
EXERCISES 8.12 For the circuit in Fig. 8. 19, let 1-1 m1A, Vcc-15 VR-|0 kQ, with α 1, and let the input voltages be: t'ai = 5 + 0.005 sin 2π × 1000t. volts, and = 5-0.005 sin 2π × 10001, volts. (a) If the BJTs are specified to have gr of 0.7 V at a collector current of 1 mA. find the voltage at the emitters. (b) Find g, for each of the two transistors. (c) Find ic for...