Sem 7

Electronics and Telecommunications

Year 4

Fourth Year

`UNIT - 5`

`Analog CMOS DesignQ1) Determine Icopy in following circuits. Assume all MOS transistors are in saturation and the influence of r0 can be ignored.<div style="overflow-x:auto;"><img align="left" alt="" src="https://glossaread-contain.s3.ap-south-1.amazonaws.com/epub/1645289162_7339506.png"/></div> Q2) Determine Icopy in following circuits. Assume all MOS transistors are in saturation and the influence of r0 can be ignored.<div style="overflow-x:auto;"><img align="left" alt="" src="https://glossaread-contain.s3.ap-south-1.amazonaws.com/epub/1645289162_8517315.png"/></div> Q3) If VDD=3V, Q1, Q2 identical L= 1 m, W=100m, Vt=0.7V, kn’=200 A/V2, ro = 200k1. Determine R for I0=100  A. 2. What is the lowest value for VO ?3. How much IO changes when VO changes 1V?<div style="overflow-x:auto;"><img align="left" alt="" src="https://glossaread-contain.s3.ap-south-1.amazonaws.com/epub/1645289162_931444.png"/></div> Q4) If VDD=3V, Vtn=|Vtp|=0.6V, kn’=200 A /V2, kp’=65 A/V2, L=0.4 m, W=4 m, ro1=200k , ro2,3 = 100k , IREF=100 A1. What is the small-signal voltage gain, Vo/Vi ? 2. What is the maximum Vo for which the above is valid?<div style="overflow-x:auto;"><img align="left" alt="" src="https://glossaread-contain.s3.ap-south-1.amazonaws.com/epub/1645289162_9842372.png"/></div> Q5) Explain Differential amplifier with diagram. Q6) What is cascode amplifier? Explain using suitable diagram. Q7) What is a source follower? What is current gain, voltage gain, input and output impedence? Q8) Write short note on current source inverter and push pull inverters. Q9) Explain current mirror circuits. Q10) Define current source and sink. `