4.23 The circuit in Fig. P4.23 utilizes three identical diodes having I 10-16 A. Find the...
1. The below circuit utilizes four identical diodes having Is=10-16 A and V1=26mV. If a current of 1 mA is drawn away from an output terminal by a load, what is the change in output voltage? Assume that a diode will have a voltage drop of 0.75V when 15V voltage is applied to a below circuit and no load was connected, as shown below (20 pts) +15V R ovo
Q1: The cascode current source in Fig. 8.4.1 utilizes two identical PMOS transistors fabricated in a V, 0.18-um CMOS process for which VDD 1.8 V pcor - 100 ???2 vG2 02 Design the circuit to obtain 1-50 ?? and Ro-I ?? and to allow for the maximum pos- sible voltage swing at the output terminal of the current source. Utilize Vov 0.2 V. Specify the 01 tor Gl ify the required values of the dc bias voltages VGI and VG2....
Part IIl: Diodes The Ideal-Diode Model a) For the circuit below, find ID and VD for the case VDD 5 V and R 10 k2. Assume that the diode has a voltage of 0.7 V at 1-mA current. Use (a) iteration and (b) the constant-voltage-drop model with VD 0.7 V 홍Yo b) Design the circuit below to provide an output voltage of 2.4 V. Assume that the diodes available have 0.7-V drop at 1 mA. +10 V Vo
Part IIl:...
) The current-mirror circuit shown in Figure 3 utilizes pnp transistors having Isl 10-5A and/s2-2x10-5A for transistors Q1 and Q2 respectively and for both transistors a β 50, and |Val 10 V to source a current at Vo.It is required to design the circuit to provide an output current oflo= 1 mA at Vo = 2 V. What values of REF and R are needed? 0i 02 /REF lo
) The current-mirror circuit shown in Figure 3 utilizes pnp transistors...
D1, D2, D3 and D4 are identical diodes and the threshold voltages VD 0.65 V. The reverse polarity voltage (VZ) between the ends when the reverse polarizing current of the Zener diode is at least 10 mA (ID5) is 8.2 V. The threshold voltage of the Zener diode is VDZ-0.65 V. Draw the change of the output voltage (VO) for the input voltage between-20V <Vi <20V, (R-1kQ) Ds Ds D2
D1, D2, D3 and D4 are identical diodes and the...
4. In the diode circuit below diodes Day and Da2 are identical have a voltage of 0.7V at ImA current. The diodes Dbị and Db2 are identical and have 10 times the junction area of Dal. Also all diodes have n=2 and VI = 25mV. The circuit employs a supply current ISUPPLY=20mA. (a) Draw the i-v curve for diodes Da and D. Label axes and all relevant points. [8] (b) Find the value of Vout at nominal supply and no...
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(b) The circuit shown in Figure 2 utilizes two diodes, Di and D2, a R, resistor R1 = 10 Ω. Assume a piecewise linear (PWL) model for the diode that has VD 07 and r-5 Ω. Draw the output voltage, vo, as function of the input voltage, Vin, characteristics of this circuit at point assuming the input voltage has a peak-to-peak voltage of 3 Volt. There is no need to draw the...
*4.57 Consider the voltage-regulator circuit shown in Fig. P4.57. The value of R is selected to obtain an output voltage Vo (across the diode) of 0.7 V. Figure P4.57 (a) Use the diode small-signal model to show that the change in output voltage corresponding to a change of 1 V in Vt is AV AV: = v* +-0.7 V+ V++V, -0.7 This quantity is known as the line regulation and is usually expressed in mV/V. (b) Generalize the expression above...
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)...
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...