4.36 The parameters of the circuit in Figure P4.36 are Rs = 4k, R₁ = 850k, R₂ = 350k, and R₁ = 4 ks2. The transistor parameters are VT p = -1.2 V, k₁ = 40 μA/V², W/L = 80, and = 0.05 V-1. (a) Determine IDQ and VsDQ. (b) Find the small-signal voltage gain A, vo/vi. (c) Determine the small-signal circuit transconductance gain Agio/v. (d) Find the small- signal output resistance R.. VDD-10 V Ca R₁ Rs Се Figure P4.36 R₂ RL

Identify the source, drain, gate, and bulk terminalsand find the current I in the transistorsAssume VTN = 0.70 V

Used bule pen

Used bule pen

Calculate the current for the JFET  for VGS = −2 V and VDS = 0.5 V.(b) Repeat for VGS = −1 V and VDS = 6 V

VDD VDD Cc2 o ve RG Figure P4.43 Figure P4.44 4.44 The transistor in the circuit in Figure P4.44 has parameters VTN = 0.4 V, K, = 0.5 mA/V², and 2 = 0. The circuit parameters are Vpp = 3 V and R; = 300 k2. (a) Design the circuit such that Ipo = 0.25 mA and VpsQ = 1.5 V. (b) Determine the small-signal voltage gain and the output resistance R,. ww ww ww ww

Q6) d) Show by means of a diagram how you will normally connect external batteries ini. PNP transistorii. NPN transistore) Describe how a semiconductor will behave at absolute zero temperature.

A MOSFET operated as a switch as shown in Figure 4.3 permits a digital signal operating at very low current levels to control comparatively high- level current devices such as a light-emitting diode (LED). Analysis a. VG IG VDD b. Repeat for VG = 3.3 V. RD ID ALED VD Figure 4.3: Circuit for Problem 4.3 ermine IG, VD, and ID wh VG = 0 V. The [OSFET is operating region?

4.15 For the NMOS common-source amplifier in Figure P4.15, the transistor parameters are: VIN = 0.8 V, K, =I mA/V², and à = 0. The circuit para- meters are VpD = 5 V, Rs = 1 k2, Rp = 4 k2, R = 225 k2. and R2 = 175 k2. (a) Calculate the quiescent values Ipo and Vpso. (b) Deter- mine the small-signal voltage gain for Ri = 00. (c) Determine the value of RL that will reduce the small-signal voltage gain to 75 percent of the value found in part (b). VpD Figure P4.15 ww ww

A circuit responding to temperature is shown in figure 6. Assume the diode equation is given by Ia Ioe(qVa/kT). What is the DC operating point of the circuit at the temperature T. Also determine the small signal output swing Av, due to an incremental change in temperature AT. For this question assume Rį = 0. Heat T+AT V. DD D'B R₁ OV +AV Figure 6: Temperature sensor