10.27A common-emitter amplifier has CC1 = CE = CC2 = 1µF, RB = 100 kΩ, Rsig = 5 kΩ, gm = 40 mA/V, rπ = 2.5 kΩ, RE = 5 kΩ, RC = 8 kΩ, and RL = 5 kΩ. ...

## electricalstudent Latest Questions

10.26A CS amplifier has CC1 = CS = CC2 = 1µF, RG = 10 MΩ, Rsig = 100 kΩ, gm = 2 mA/V, RD = RL = RS = 10 kΩ. Find AM, fP1, fP2, fP3, fZ, and fL. –9.9 V/V; ...

10.25For the CC–CB amplifier of Fig. 10.34(a), let I = 0.5 mA, β = 100, Cπ = 6 pF, Cμ = 2 pF, Rsig = 10 kΩ, and RL = 10 kΩ. Find the low-frequency overall voltage gain AM, the ...

10.24Consider a CS amplifier having gm = 2 mA/V, ro = 20 kΩ, RL = 20 kΩ, Rsig = 20 kΩ, Cgs = 20 fF, Cgd = 5 fF, and CL = 5 fF. (a) Find the voltage gain AM ...

10.23A bipolar current-mirror-loaded differential amplifier is biased with a current source I = 1 mA. The transistors are specified to have |VA| = 100 V. The total capacitance at the output node is 2 pF. Find the dc value, and ...

10.22The differential amplifier specified in Exercise 10.21 has RSS = 75 kΩ and CSS = 0.4 pF. Find the 3-dB frequency of the CMRR. 5.3 MHz

10.21A MOSFET differential amplifier such as that in Fig. 10.26(a) is biased with a current I = 0.8 mA. The transistors Q1 and Q2 have W/L = 100, images = 0.2 mA/V2, VA = 20 V, Cgs = 50 fF, ...

10.20For an emitter follower biased at IC = 1 mA and having Rsig = RL = 1 kΩ, ro = 100 kΩ, β = 100, Cμ = 2 pF, CL = 0, and fT = 400 MHz, find the low-frequency ...

10.19In Example 10.8, even though we found that a dominant pole does not exist, use the method of open-circuit time constants to obtain an estimate for fH. (Hint: Recall that τH = b1.) fH = 1.53 GHz; about 18% lower than ...

10.18Recalling that τH = b1, use the expression for b1 in Eq. (10.103) to find expressions for the three resistances Rgs, Rgd, and RCL for the source follower.