Concept explainers
(a)
The small-signal voltage gain for given
(a)
Answer to Problem 10.81P
Explanation of Solution
Given:
Calculation:
The given circuit is,
The transistor
Now calculate the small-signal voltage gain,
Substitute the given values,
Substitute
Conclusion:
(b)
The small-signal voltage gain for given
(b)
Answer to Problem 10.81P
Explanation of Solution
Given:
Calculation:
The given circuit is,
The transistor
Now calculate the small-signal voltage gain,
Substitute the given values,
Substitute
Conclusion:
(c)
The small-signal voltage gain for given
(c)
Answer to Problem 10.81P
Explanation of Solution
Given:
Calculation:
The given circuit is,
The transistor
Now calculate the small-signal voltage gain,
Substitute the given values,
Substitute
Conclusion:
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Chapter 10 Solutions
Microelectronics: Circuit Analysis and Design
- For the circuit given below, transistor parameters are given as -= 0.1mA/V², Vth,p=-1V, A=0. Using these information, a) Design the circuit (find the values of R1and R2) such that Ip=100HA. b) Find the small signal voltage gain Vo/Vi of the circuit. R1 10 V - R2 ww0-2.5 Varrow_forward2. This is a small signal problem. Suppose the MOSFETS drawn have lp = 1 mA when VGS = 2.5 V, and Vth = 0.5 V. Suppose the BJTs drawn have Ic = 1 mA when VBE = 0.7 V. Av VDD = 5V VDD VDD T T Rc = 1 kn Vin RB2 = 10 kn RB1 = 10 kn w/li w Rp = 1 kn R₁ Vout (a) Derive voltage gain Ay and input impedance Zin assuming R₁ ➡8. (b) Plot Ay as a function of R, assuming R, is attached between Vout and ground. (c) Rederive Ay and Zin assuming Roo and after swapping the BJT and MOSFET. RLarrow_forwardFor the circuit in Figure 10.20 in the text,VCC = 5 V, RC = 1 kΩ, RB = 10 k, and βmin = 50.Find the range of values of VBB so that the transistor isin saturation.arrow_forward
- 9. State the relationships of the small signal hybrid- π parameters gm & rn to the transistor dc quiescent values. Draw the small signal model of the adjacent BJT amplifier circuit: Rs=0.5 KQ ww HH Cc Vcc= 10 V R₁ = • 56 ΚΩ www 3 R₂ = 12.2 kQ2 Rc=2kQ - VO RE=0.4 KQarrow_forwardVi RB Vcc Rc our A BJT (B=200) is implemented in an amplifier circuit, with a VCC of 15 volts. One wishes to set the Q point at IC = 5.76 mA and VCE = 6.73 volts (DC). Determine RB.arrow_forward4. For the transistor in the figure shown below, the parameters are ß = 100 and VÀ = ∞. a. Design the circuit such that lEQ = 1mA and the Q-pt is in the center of the dc load line. b. If the peak-to-peak sinusoidal output voltage is 4V, determine the peak-to-peak sinusoidal signals at the base of the transistor and the peak-to-peak value of Vs. If the load resistor R₁ = 1kQ is connected to the output through a coupling capacitor, determine the peak-to-peak value in the output voltage, assuming vs is equal to the value determined in part (b). Vcc=+10 V www Rs = 0.7 kΩ Cc www RB RE voarrow_forward
- Q.5. Consider the emitter-follower circuit shown in Figure below. Assume all transistors are matched with VB Efon) = 0.7 V, VCEfsat) = 0.2 V, and VA = 00. Neglect base currents. Determine the maximum and minimum values of output voltage and the corresponding input voltages for the circuit to operate in the linear region. v* =5 V R =1 kQ -OvO R = 1 kQ Q2 V- =-5 V ww.arrow_forward2) Consider the circuit given below. (Assume: K-4mA/V', Vt=-1V, A=0, (K= µCox.(W/L)) da Perform DC analysis and calculate Va. Vsg, Vs, voltages, and Ip, gm, ro values bo Draw a small-signal equivalent circuit Co Calculate Av, Rin, Rout values as shown on the schematic Also ) satwaton mode Test for Fill inthe table VG VSG O2m A Rin Vs QUin ID vo Coo 9m Ro Av Rout Rin Routarrow_forwardDesign a common-emitter amplifier to provide a small-signal voltage gain of approximately -10. 1. Consider the circuit shown in Figure 1. Show the following calculations in your notebook: Calculate a value for Rc so that A, z –10 Calculate values for R1 and R2 so that the circuit is bias stable and near the center of the load line. (Note: Use the datasheet for the 2N5209 transistor to make your calculations more accurate). Vcc = 10 V R1 Rc Cc2 Cci RL Vs R, REj = 499 Q Figure 1: Common-emitter amplifier for part #1arrow_forward
- Consider the circuit. The transistor has a parameter β that varies between 50 and 200. The operation of the circuit and the electrical variables at the end points must be known. end points. Calculate the following for β = 50 and β = 200. a) lE, VE and VB (DC analysis). b) The input resistance Rin (small signal analysis). c) Voltage gain V0/ Vsig (Small Signal Analysisarrow_forwardThis is about BJT amplifiers.arrow_forwardFind this simple circuit configuration (Vth & Rth) seen from the output terminalsarrow_forward
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