Question


Consider a common-source MOSFET amplifier with active load and resistive feedback (Chapter 5, slide 33) a. (10 pts) Let Rs = 250 Ω. Determine the value of gml needed for an input match assuming drain resistances rdi Td2-00. b. (10 pts) Determine 0 k2. c. (10 pts) Determine the amplifiers NF for the resistance values in parts (a) and (b) if the amplifiers gain if R - 2 0.01 Siemens. Let the excess noise factor rl.

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Answer #1

Draw small signal equivalent of simplified circuit of CS stage with resistive feedback. __+ out side roş Y8mVgs & 1 Given ryR = 1 R = V1 * Smiles &m1 For matched input, the input resistance Remust equal to the source resistance Rs. R.. = Rs Rg, = 25

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