5.31. The circuit of Fig. 5.124 must be designed for maximum gain while maintaining O, in...
Q5: In the following circuit, identical diodes Dl and D2 use constant voltage drop (CVD) model. VD,ON = 800 mV, R1 = 1 K. Determine the change in Vout if Vin changes from +2.4V to +2.5V. (Hint: use small signal model) Vin - DR Nyu out 'out 1K12 z Q6: The following BJT circuit has VBE = 0.8V, VA = 10V, Vcc = 2.5V. The amplifier must be designed for maximum small signal voltage gain Ay, while maintaining Q1 operating...
stron For the circuit depicted in Fig. 4.64, calculate the maximum value of Var that produces a collector-base forward bias of 400 mV. Assumes 4 x 10-16 A and VA RC1k32 01 Figure 4.64 Vcc= the tolerance is +/-595
11.41 O The circuit of Fig. P11.41 represents the inter- nal circuitry of a simple BJT operational amplifier. In answering the following questions, use appropriate en- gineering approximations where required. Assume the BJTs in the circuit to be matched and to have the fol- lowing parameters: Cli = 1 pF, VA 00, VBE = 0.7 V, Vsat 0.2 V,尾= 200, and η = 1 . Find the bias currents through each BJT and the bias voltages of nodes A, B,...
D 6.112 The MOSFET in the circuit of Fig. P6.112 has = 5 mA/V, and V, = 40 V. (a) Find the values of Rs,RD, and RG so that ID=0.4 mA, the largest possible value for R is used while a maximum signal swing at the drain of +0.8 V is possible, and the input resistance at the gate is 10 MS2. Neglect the Early effect. (b) Find the values of gm and r, at the bias point. (c) If...
3 (40 pts) MOSFETs in the following active loaded differential amplifier circuit has K 2.5K 250LA/N 0.5V with Vs V-10V Given Va a 0.BV and V Vas Va -0 BV. and assuming saturation mode for aแ devices. answer the questions a (12 pts) In order to establish a bias current of s 200HA calculate the value of R and W/Lratios of matched devices เฉ. ฉ6) matched devices (Q4、Q5), and Q7 b. (8 pts) Calculate the output resistances of matched devices...
plz solve these two question. 9.5. Suppose the circuit of Fig. 9.41 is real- shown in Fig. 9.42, where Q3 plays the role of /1. Assuming VAi VA2 VA,n and VA3 VA. p, determine the output impedance of the circuit. Rout Rout Vcc Vcc Vb1 a1 Vb3 V1 a Q2 Q Figure 9,42 Figure 9.41 HO 9.49. The current mirror shown in Fig. 9.74 must deliver 1 0.5 mA to a circuit with a total power budget of 2 mW....
D-17.121 The MOSFET in the circuit of Fig. P7.121 has V, 0.8 V, k,-5 mA/V", and V,-40 V (a) Find the values of Rş, Rp, and Ro so that Ip 0.4 mA, the largest possible value for Rp is used while a maximum signal swing at the drain of ±0.8 V is possible, and the input resistance at the gate is 10 M2. Neglect the Early effect. (b) Find the values of g and r at the bias point. (c)...
9.49. The current mirror shown in Fig. 9.74 must deliver I1= 0.5 mA to a circuit with total power budget of 2 mW. Assuming VA = 00 and B > 1, determine the required value of IREF and the relative sizes of QREE and Q1. - Vcc 2.5 V Circuit /REF QREF 9.49. The current mirror shown in Fig. 9.74 must deliver I1= 0.5 mA to a circuit with total power budget of 2 mW. Assuming VA = 00 and...
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)...
D **7.124 The MOSFET in the amplifier circuit of Fig. P7.124 has V, 0.6 V and 5 mA/V'. We shall assume that Vis sufficiently large so that we can ignore the Early effect. The input signal v has a zero average. (a) It is required to bias the transistor to operate at an overdrive voltage 0.2 V. What must the dc voltage at the drain be? Calculate the dc drain current Ip. What value must Rp have? (b) Calculate the...