7.16 In the cascaded MOSFET amplifier of Fig. 7-21, Cc∞o. Find (a) the voltage-gain ratio Av/v, and (b) the current-gain ratio A₁ = i₁/i. 218 R Cc VDD Rp2 Cc R21 Rp Cc RI R12 gml Fig. 7-21 R22 8m2 rds2 RL UL SMALL-SIGNAL MIDFREQUENCY FET AND TRIODE AMPLIFIERS [CHAP. 7 (a) The small-signal equivalent circuit is given in Fig. 7-22. Using the result of Example 7.1, but replacing RD with RDI | RG2 where RG2 =R21 || R22, we have RGI Similarly, G₁ Al= -8m1rds (RD||RG2) Fdsl + (RD||| RG2) G₂ Rp RL UL Rot RG2 Vg2 d2 dil Fig. 7-22 A2 -8m2d2(RD2 ||RL) d2+(Rp2||RL) Then (b) Realizing that RG₁ = R₁|||R₁2, we have Bmi8m2rds1d2(RD1 || RG2)(RD2 ||RL) [ds]+(RD|RG2)]["d2 + (RD||RL)] iL vo/RL RG A A₁ = i v₁/RGI RL where A, is given by (3). (1) (2) (3)

7.16 In the cascaded MOSFET amplifier of Fig. 7-21, Cc∞o. Find (a) the voltage-gain ratio Av/v, and (b) the current-gain ratio A₁ = i₁/i. 218 R Cc VDD Rp2 Cc R21 Rp Cc RI R12 gml Fig. 7-21 R22 8m2 rds2 RL UL SMALL-SIGNAL MIDFREQUENCY FET AND TRIODE AMPLIFIERS [CHAP. 7 (a) The small-signal equivalent circuit is given in Fig. 7-22. Using the result of Example 7.1, but replacing RD with RDI | RG2 where RG2 =R21 || R22, we have RGI Similarly, G₁ Al= -8m1rds (RD||RG2) Fdsl + (RD||| RG2) G₂ Rp RL UL Rot RG2 Vg2 d2 dil Fig. 7-22 A2 -8m2d2(RD2 ||RL) d2+(Rp2||RL) Then (b) Realizing that RG₁ = R₁|||R₁2, we have Bmi8m2rds1d2(RD1 || RG2)(RD2 ||RL) [ds]+(RD|RG2)]["d2 + (RD||RL)] iL vo/RL RG A A₁ = i v₁/RGI RL where A, is given by (3). (1) (2) (3)

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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