Question

2) For the circuit below, Vrh] = 1 V and k = 4 mA/V2. Calculate i and determine the operation modes of the MOSFETs. W 1 ΚΩ 2.5 V. 100 kΩ 1 ΚΩ. 5V 4V 0.5 kΩ:

Please solve and explain clear way.

Answer 1

그 I! 8.5 I was + 2014 0.5kn PE Itaano ISD F 47 I = 2.5-0= 2.5mA I kn N = (Nmos)- Nasa 4- 2.5= 1.55 As Vgs) wth Hence Mmos ON het oN in saturation moodle then IDS 2 (Vasavthy? 4 [1.5-1]² IDs = 0.5mA kve for N- 5= IDS-2 & VDS+2.5 Vos= 5-2.5-0.5 VDS3 28 As VDs) vas-wth - 2 115--0-5V Hence Apxumption was correct Mamos on in saturation mode IDS 0.5mA And

Now, Kch at Node x IDST LSD - 1 0.5+ ISD = 3.5mA 4 ISDE 2MA for p [pm os WE=4 - ISD*0.5 Vs=4- 2*0.5 Ns = 37 Nsa - Vs-ver-3-0 INSG=37 VSD = NS-VD 3-2.5 2 VSD = 0.55 AS VSG > With rene pmos And NSG-puthl = 3-1=2v WSDL usar Withi Hence linear mop or Trode mode On Now KCL at p Mode ISD & Ia tuzo 2+0+1=0 i=-2 mA

Sommary P [pmas] ON in linear mode /Triode mode NC M mas ON in saturation mode And = -2mA pmos PMOSFET N mos- NaMOSFET Considered xa un Lox W). Mot tricluded 2 Hese

Note Nmos pmos ده(دمام Vsa slvtIDON VDSL Vasart NSD < VSG-IVEL Triode ID = Un Loxw Sergs-V4) Yos-voy FSD = up cox (m) [luss - 1 tl) - vB] VSD7 VG-Pt) Nmos NDS7 Vasavt fexturation mode vascut Vsullvt) oft