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110 views19 pagesECA 2 Unit 5
Electronic Circuits and Analysis Engineering
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0% found this document useful (0 votes)
110 views19 pagesECA 2 Unit 5
Electronic Circuits and Analysis Engineering
Uploaded by
Purna SreeCopyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF or read online on Scribd
/ 19
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MOSFET AMPLIFIERS |
.
An instaneoug 9fe bo
Soule Vollage fs
Yes = Yaset Ys
Combinatin DC AC comPoned ,
oe Ac an componee soe
cohete Vase és 9 component. Dag 6S Accomponeud
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id
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given Vive Oy & ky 2 (oy, %
0,
fhe mast A
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= Vo Rite = Vos
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ae)
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Mo -
Ye = Gm Caller yeiie) |
Rut CR UR») :
above eqns, -ve igo Indicatta that
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Aqivalent — vuilitanee bin gat
tu nal
SOurCe le the up loop
current = doyree dues ste ~—ooveratl eae ae
: fy = 11 C70 Ie)
= up ll Rp
signa) vettage goin,
ie q a wmmMm Source amplyier Yop = ty
Re OM, = OK, Re bOkKL, Rei= YRA thy
tant pram, VINE OU, Ken= 005m, Aso
TE snore ywittor tn paturatting gin
05m (0:99~ 9.4)”
psm(o5ay -oagyma
— Yog= Von - Toko
= 2:3 — (0:194)(t0) Gm= 2VknIng
= 2 V (orc (orlaum)
= 0159 mp
A= - 4m CRN R) (s011@p) % = site
Ret QR) aes
= Cosqm) (966k (yo) (0102) (s:/4urn)
Sie = 289-Bst-
= -S.00 Tol Rp = _ToRD
y+ Rp
R= WURD= A6Ebr Seam
Source Amptfier with soure Recirtoy »-
ES
wal
eer = tends «tp At alilin © He
eget §— variation in tramuiitor
per AN. mple. te Vatue of te
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§- pont wrth not Maes
—Aburee uk tnthuded le
fb Meduoir = “He voltage Fuume ko ic venp highv
: Vo= ~4mVge Rp —> C1)
ie middle
—M 4M + Gnigcky 0
aut
(49meRs
(oop,
Vottage
gain NT
Chource gfotlower)
n to owl aud
AC
terminal: Fe!
vpp gi!
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Aource follower —beaaune Olp atron
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— anatysic:-
=O vartage wage gle
Vor gnvtgl@e tito) —9 01)
any kin atte oop,
~W+ Vort Yo = 0
V95= Vi- Vo
We Vor+ Vo
Wi = V9s4 gry (R11)
Vi = Vou (14 gm isl)
:>__Vb
149m (Ret ¥0)
oppging vottage divition vule In +p y
Viz Vt ( Ry Re
Ry + Biller)
Be
i
Pb
Vo= gmVae (Qstreo)
Vo = Goal eitRo)
Nap (t+ gov eesti) = ee )
ae Rei ARR)
= Ym(Rrro. Ve (Rite) x
: cS x (tam)
t-4g9m( Ril) i T=—gmVag —901)
Appt ve 1 Ae middle loop
04 Vos+ V=0
; V=—Vas
E oo -9m(-V)
™ = ae = Ro
I gm
overatt = Op tmpedanee ,
le
Ro — “gm WR Ro
fv, Ri, Ro of emmon dain tkt | souree
tke: Tho kt parameren Ore = Vpp=12¥,
york» Rp = WyOdk » Ro = OK, Vay eh5V, kn= 4mAly’
molly. , Roi = yee St
~V94 Vasq + Ina, = 8
v) -
“Yg4 Vga, + 0: (tn (Vgs- Vind / =?
e
- 886 + Meg + (o-st)| W004 (g.-1) | y
-h
+ Vasq + 3 Vgc-4 436 — AV4sq 20
Vag —8V a0 - 2320
Vgsg = 204V pe
dng = 01004 ( Vycg 3)” ° oa
V = Jnisekr
> 004 91-15)
h45mp ay = (ihird)(120k)(0: 99K)
is Ome IV ining Our C14 (int) O93) )
= 2 \(aim) Gi4)m > Oitaty
=ON2 = tomer
Riz PQ,
= broke
DF Bur = 006k , Rol = py IR
gout Ainpiifier -- get (hy Be Mgnal Ground. the coupling
t expo 4 tuple —Aignal tp pounce 6G &
coups Olp voltage OMe RI
“grat! 4ignal Analycrs:-
i= Py
Replace MOSFET With = a@mall Signal eqyuival ent
“okt: AMume Ry = 00
Rg ¢ guia D
Ti
YM Vip Pot) = Vo
+4 ae
=
My = — gens (®DURL) 1)
lt KVL in Leop Ne
Di Rsi — V4. -\Vy = 0
(alg) 4s = Me
mk I] = Me
= ih 2
Vos gent — (2)
= gms (Ron RL)
1+ 9mRej
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(+ gmRey
gatt oaaplifier ip 4 op are in
hse lf 20
fen” Sat tere a Site aS aa to
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Gote amplifier if eurrent: Ther ehore a e
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§n - cases tke Ip le ts,
= v peaERD)
ce ay Rot Re
fe the ‘lp node Apply key :
oe
i
Mas ( Qt ob) = 1)
$= SRG
: GrARe +
To = 4m BolT Rs)
(Rot @ )Lt+ amesi)
ae Ap = mRp Rey
z (Ro+8L) (Mamey ) o|p WM i bance '
=i
+ KVL in Wop
it op
. TiRti- vas=°
Hg gana
We io 5 Vg 6 (t+ gens, ) =0
rv yas Vgt=0 er£2°
igh20 arle
deplttion —Irad device: Po = Vig ~ 00
ols Rolixe
Npp n ipl mp)
b{ Vie | yn
Vy | Mu(sat) Vas Ov
pas Leyes
So ys a eee
es
pone sdipution mode moot can alo
: Bet O — Apnd = vdawiee » Comrider the
Bia meget — with «= galt & sure
a The = trawwictor §=— may bein
Aeturetion = 1 © non— saturation regions.
id otto of = tte = n-channel del eteor
Ve hat =— Vc ccop) tte
icin = (00d owe «= can be) ied
: ano-ther mosyee as shun. 0
mip that can Se Ss tt
Or a an Inve(ter i
a
a Driver
a At oobeve tkt, load device m
Aranuator Mp moy be blond =n a
4 nm saturation wealon depending on a
vettog.- Wun geo, thy sdtiver +ranttyy ‘
. OFF Mate be Ty=0=Py te thor fe ore
amp QUT load.” vy = Vyp.
Vi=vop, Wawer +rantctoy ON aud
‘8 wirtnt pow Qe nad ad tal
avon . load appt © oe Ven uct
Bonar errant, & wing
cke above -
t Mince -2V > Knp = Sonal"
Mo for viz 5¥
\‘e “lranaittor Mp ott baud
and tu
tw Satucntlo? ragit
Vip — Yar) as _ Vo= Vp, Vic Var = 8Y
Vas-= 0
whl) = sve] (Duan ~ Yao]
OB = BVaD~ Veep
Mash - 8 Voeo+ ore =o
Vaso = 4F-4v (or) ory.
Vo Cannot be > than Supply Voltage
mene Old Saln tt puipy,
Mes Vor Vonp= 5-1 = YVv sy onv (Vo
pVptcae,
Voc~ Vait = Upecsat)
whieh — eon trarulttor yy always — bra fn
Ay = kn(Vog— vent”
The Monten charackmitres Of above cat
Tp mA»
Kg
Moo Inverter
device fg COnnedes in a
ope be =O Sl
a digital Wye
ie aotu. «regi Oh
dover = tra mirtov
non~ Aatu. —-yeqion ampufitr with — auhancenint — boads-
VpP
eral equtvolent ck a above tke
—(Gma vas )( roll tt ro)