The following circuit is used for questions Q5 through Q8. Assume all transistors are in forward...
Consider the following circuit. Assume that the transistors are in Forward Active with Vbe = 0.7 V. You may assume that Icle and b 0. Determine Rc so that lo = 800uA. Show your work! 5V RC vo Idio Q1 Q2 1k 1k
Look at the circuit below and try not to freak out!). Assume all transistors are in the active mode. You must now decide whether to include or neglect the Early effect (r.) in your model for each transistor - use the rules we established in class (don't just neglect it every time!). & Voc ¢ Voc a VoR Toetan SRE Rino R Fig 2 a) [3 points] Draw a small-signal model for this circuit (this may take a full page...
(iii Assuming that the transistor in the circuit in Figure 2 is in forward active mode and VBE 0.7V and B = 200, calculate the DC bias values of the base current, the collector current and the voltage VCE 20 knS 12 kS 4.7 pF 47uF 3.3 knS 200S Figure 2
Question 26 Ip) of all transistors in the circuit. You may ignore the influence of channel-length modulation and body effect in your bias calculations Consider the circuit shown in Figure 7. Determine the bias point (VGs, Vps, VDD R R IREF VOUT VCM-n 2 VCM 2 Q3 VDD 5 V VCM 2 V Vt 0.5 V kn1 8 mA/V2 kn2 16 mAV2 kn3 kn4 = 8 mA/V2 1 R 3 kn IREF = 1 mA Fig. 7 Select the correct...
Q5. Consider the circuit in Fig.1 (right). Assume 9m, 9o, VT, W, L, Mn, and Cox of the transistor are knwon and isolation capacitors are sufficiently large. Assume the transistor operates in saturation. (1) Find input resistance Rin (5 marks). (2) Find output resistance Rout (5 marks). (3) Find voltage gain v./vs (10 marks). (Q4). Right - MOSFET amplifier (Q5).
(Total 10) Consider the following circuit where all transistors are identical with β-o, VA-e, versat: 0.3V, Vetlos-0.7 V except for Q4, and VT = 25 mV. Given that the voltage drop across R4 is 1.5 V Determine 1. 12V (a) [5] The value of resistor R3. (b) [3] The scale current ls of Q4 (c) [2] The voltage between collector and base of transistor 04, i.e., Vce. Q1 Q5
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Questions 1-3 below are about the amplifier circuit of Figure 1. Here Vcc is a fixed voltage The base voltage vB(t) is time-varying, and is of the form vB(t) V(t) where VB is a DC offset, and vb(t) is a time-varying purely AC signal. Suppose the amplitude of vb is A. Assume that the capacitor C is...
December 2013 Elec-B5, Advanced Electronics QUESTION (1) In the following circuits, assume all transistors have the following parameters: K 0.5 mA/V2, VT,-1 V and λ-0.02. Given: 1M bias I mA M M2 꼬 + 2 고 (~ 2 a) Estimate the differential gain vourlVIN in (V/V) b) Find the common mode input resistance Ricm c) Find the common mode input range. d) Estimate the common mode rejection ratio, CMRR. Express your result in dB. Useful formulae: for n-channel MOSFET (6...
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Problem 2 On the circuit on Figure P2, transi stor Q1 has a threshold voltage of Vt = 2 V and a transconductance parameter of k = 100 mA/V2. Note that Vcc = -Vee = 4.5 V. Moreover, capacitors C1, C2, and C3 can be assumed to be very large VDD 4.5.0 R3 25kQ R1 300kn C2 Vout C1 Rsig Q1 1k0 R2 200kn Vsig (R4 2kQ C3 -4.5V VSS...
A common source amplifier circuit based on a single n-channel MOSFET is shown in Figure 4b. Assume that the transconductance gm-60 mS (equivalent to mA/ V) and drain source resistance, os, is so large it may be neglected. 0) Calculate the open circuit voltage gain Av Yout/ Vis. i) The amplifier has a load of 10 k2. Determine the current gain Va. = 12 V 150k 4k3 Vout Vin 200k GND = 0 V Figure 4b a) State the name...