Question

Problem 3 The drain current Ip through MN and Mp is 0.5mA. Please calculate (1) How much is the DC biasing voltage VB (2) How much is the small signal gain. w= 300; μ.cox = 1001쓺1 ; VrHp VouT 0.1申; IN NMOS MN. :- 0.1申 Assume MN and Mp are in saturation and drain current goes through these CMOS is 0.5mA. The equation below is to figure out the bias voltage VIB THp ubstitute the parameters w-300, μ,Cox-100問; Vrhı,--0.4(vl: 0.1 ',-0.5mA into the equation, get (0.5)1001T721300(Vas-VrHp) 0.5mA= Simplify the equation and get Vas--(0.2 + VTip)--0.6 V ve = ve = vs _ 0.6 VDD-0.6V = 0.2V for VDD-1.8V Vin RDs,NKDs,0.1 0.5m 20 KOhm

Can you explain where the negative on the equation VGs = -(0.2 +Vthp) = -0.6 and explain the equation of vb = vg = vs - 0.6

And also why are we using the gm of pmos and not the nmos

Answer 1

AC equivale Problem 3 The drain current l through MN and Mi is 0.5mA: Please calculate (1)How much is the DC biasing voltage V (2) How much is the small signal gain VOuT PMOS Mp: w= 300; μ.cox-1001 ; VrHpーー0.41Vj: λ = TMP 0.1 ]; VrHn-0.4[V]; λ = NMOS MN. : w= 100; μ.cox = 200 0.1 Vin Assume MN and Mp are in saturation and drain current goes through these CMOS is 0.5mA. The equation below is to figure out the bias voltage VB MN - 1001 i Vra,--0.4V1-0.11 :1,-0.5mA Substitute the parameters w 300;MpCax into the equation, get (0.5) 1001 1300(es-v,m) 0.5mA= Simplify the equation and get potenbial) Vout SN Vin = 20 KOhm RDS,N= RDS,- Vin lIp 0.1 0.Sm CamScan