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Assume the NMOS and PMOS transistors in a CMOS inverter have kn'= 100 µA/V², Vthn = 0.7 V, kp'= 50 µA/V², Vthp = -0.7 V. The power supply voltage for the circuit is VDD = 2.5 V. (a) If W/L=2 for both NMOS and PMOS, calculate the input voltage Vin when the transition occurs (the "C" point on the inverter input/output voltage transfer curve where both NMOS and PMOS transistors are in saturation). (b) In order to achieve an inverter whose transition occurs at precisely Vin = VDD/2 = 1.25 V, how should you choose the W/L for the NMOS and PMOS?

Assume the NMOS and PMOS transistors in a CMOS inverter have kn'= 100 µA/V², Vthn = 0.7 V, kp'= 50 µA/V², Vthp = -0.7 V. The power supply voltage for the circuit is VDD = 2.5 V. (a) If W/L=2 for both NMOS and PMOS, calculate the input voltage Vin when the transition occurs (the "C" point on the inverter input/output voltage transfer curve where both NMOS and PMOS transistors are in saturation). (b) In order to achieve an inverter whose transition occurs at precisely Vin = VDD/2 = 1.25 V, how should you choose the W/L for the NMOS and PMOS?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Please help with parts A and B! I especially need help with part B

Assume the NMOS and PMOS transistors in a CMOS inverter have kn'= 100 µA/V², Vthn = 0.7 V, kp'= 50 µA/V², Vthp = -0.7 V. The power supply voltage for the circuit is VDD = 2.5 V. (a) If W/L=2 for both NMOS and PMOS, calculate the input voltage Vin when the transition occurs (the "C" point on the inverter input/output voltage transfer curve where both NMOS and PMOS transistors are in saturation). (b) In order to achieve an inverter whose transition occurs at precisely Vin = VDD/2 = 1.25 V, how should you choose the W/L for the NMOS and PMOS?
Transcribed Image Text:Assume the NMOS and PMOS transistors in a CMOS inverter have kn'= 100 µA/V², Vthn = 0.7 V, kp'= 50 µA/V², Vthp = -0.7 V. The power supply voltage for the circuit is VDD = 2.5 V. (a) If W/L=2 for both NMOS and PMOS, calculate the input voltage Vin when the transition occurs (the "C" point on the inverter input/output voltage transfer curve where both NMOS and PMOS transistors are in saturation). (b) In order to achieve an inverter whose transition occurs at precisely Vin = VDD/2 = 1.25 V, how should you choose the W/L for the NMOS and PMOS?
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