Find the inverter threshold (value of Vin where both the nMOS and pMOS are in saturation) for VTn = -VTp = VT and the following beta ratios: Give your answers in terms of VDD. a. r = 1(Bn = Bp ) b. r = 0.1 c. r =0. 5 d. r = 2 e. r = 10
The circuit in Fig. 4 consists of P-type and N-type MOSFET. (i) Prove that Q2 always operates in saturation region, (ii) Demonstrate that Vin-Vout transfer characteristic is a straight line as long as Q1 operates in saturation mode of operation, (iii) Determine the range of Vin over which the transistor Q1 will operate in saturation mode of operation. Where needed, provide your answer in terms of supply voltage VDD, threshold voltage VT, and transistor parameter K (which is expressed by (1/2)unCox(W/L). (B) For the MOSFET based circuit in Fig. 5, find: (i) The ranges of Vin over which both the transistors Q1 and Q2 will operate either in linear mode or saturation mode of operation, (ii) The Vout range over which both the transistors will be operating in saturation mode for a given Vin.