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6
. .
. . .
11/54
-- EE ..... ... -- EE ..... ...
I
6
1. . - zener
3. .
5.
22
-- EE ..... ... -- EE ..... ...
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MOS
ro6 ro7
33
-- EE ..... ... -- EE ..... ...
MOS
ID ,VOV,GS , m o .
1, 2, dc
0,
.
V.
Q8 = Q5 = Q7 I=IREF =ID7 =ID6 = 90 A
44
-- EE ..... ... -- EE ..... ...
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MOS
55
-- EE ..... ... -- EE ..... ...
MOS
VD1 = VSS+VGS3 = -2.5 + 1 = -1.5 V
Q1 o : VDS1 < VGS1 - Vtp VD1 < VG1 - Vtp
iCMmin = VD1 + Vtp = -1.5 - 0.8 = -2.3 V.
: VSD5VOV5 VD52.5 0.3 = 2.2 V = V V = 2.2 - 1.1 = 1.1 V.
:
VSD7VOV7 VD72.5 0.3 = 2.2 V
Q6o:
66
-- EE ..... ... -- EE ..... ...
VDS6VOV6 VD6-2.5 + 0.3 = -2.2 V
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Vos
:
6 = 7:
77
-- EE ..... ... -- EE ..... ...
-- EE ..... ... -- EE ..... ...
8
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:
: p2 >> p1:
99
-- EE ..... ... -- EE ..... ...
CC t< Z ,P2
= 4 x Q13
1010
-- EE ..... ... -- EE ..... ...
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MOS
:
()
:
PSRR
11
-- EE ..... ... -- EE ..... ...
12
-- EE ..... ... -- EE ..... ...
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:
) :
13
-- EE ..... ... -- EE ..... ...
14
-- EE ..... ... -- EE ..... ...
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2
-
-MOS
15
-- EE ..... ... -- EE ..... ...
3
PMOS
16
-- EE ..... ... -- EE ..... ...
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(4)
CMOSp-
Buffer
17
-- EE ..... ... -- EE ..... ...
(5)
pMOS
1.5 2
n-pMOS (Body effect)
Cc Miller.
(buffer)
.
18
-- EE ..... ... -- EE ..... ...
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:421 dsdsmv rrg=
IWW
211
1
1 asoxpDoxpmLLg == :
tiDGi
Di
idsi VV
Iar + ,
(r0 rds):
,
5x10-6 V1/2/m
7662 dsdsmv rrg=
buffer: (
body effect gs8) 98893
dsdssmL
mv
ggggG ++++=
19FSB
m
Vsg
+=
22:
-- EE ..... ... -- EE ..... ...
offset:
()
offset:
offset
MOS
20
-- EE ..... ... -- EE ..... ...
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offset
+ =VV
ID6= ID7
VGS7
:
( )( ) ( )( )56
4
7/
/2
/
/
LW
LW
LW
LW
=
21
-- EE ..... ... -- EE ..... ...
() offset
offset
offset
22
-- EE ..... ... -- EE ..... ...
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() offset
23
-- EE ..... ... -- EE ..... ...
(PSRR)
.
)0( =psout v
v
)0()(
)(
===
=
inout
n
ps
vvd
OUT vvsA
sV
SRR
ps
)rr(gPSRR oNoPmN=:
24
-- EE ..... ... -- EE ..... ...
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Slew Rate
max
dVSR out
=
dVCi
SSI
CC
25
-- EE ..... ... -- EE ..... ...
Settling Time
,
.
26
-- EE ..... ... -- EE ..... ...
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n-p-
..
,
.
, ,
p-Slew-Rate.
p-2
n-.
-2 ,
.
p-.
27
-- EE ..... ... -- EE ..... ...
.
.
45
AVIN
OUT
+=
1
28
-- EE ..... ... -- EE ..... ...
-
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- ec
-40dB/dec
29
-- EE ..... ... -- EE ..... ...
Miller
p2
CMOSgm2
gm1
gm
CMOS
30
-- EE ..... ... -- EE ..... ...
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GB:
1
ccIIImIIImmv CCRRg 2
211 ===
45
=
= tantantan21 pp
rg
= GB z 10 GB, :
=
45tantantan180 1
2
1
1
1
pp
o
31
-- EE ..... ... -- EE ..... ...
+
+=+
+ 7.5tan90)1.0(tantan))0((tan1352
11
2
11
p
GB
p
GBAv
GBpGBGB
22.1818.0tan3.39 21 =
22
GBzGBp 102.22
1616 10
10mm
mm gggg
>> mm
C
g
C
g 16 2.2>cc c
Lc CC 22.0>:
32
-- EE ..... ... -- EE ..... ...
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Miller
180
:
33
-- EE ..... ... -- EE ..... ...
:
Miller.
[ ]{ }32
2)/(1)( CRgCssV cmco
=
o
in
oRz
)/1(2
=
RgCmc
o Rz=1/gm2
>
34
z m
-- EE ..... ... -- EE ..... ...
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:(1)
0)(1
11
1 = +
+++
oinc
cin
ninm VV
RsCVsC
RVg
0)(1
2
2
2 = +
+++
ino
c
co
oinm VV
RsCsVsC
RVg
{ }32
2 )/(1)( CgCs
sV
sV cmco =
2
RzV2
gm2V2
:
gm2
gm 6
35
-- EE ..... ... -- EE ..... ...
:
:(2)
2121gg mm=CCgCCCCb +++++=
[ ])()( 2211212121 CCCCCCCCCc ccc ++++= CCCd=
RzR1R2, :
CCp1
1
1
1
+
3
1p
=
cmcm
22
2
gCp mcm
1=
22121 cc 2 gmc
2/1 mg= , .
36
-- EE ..... ... -- EE ..... ...
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.
:
CMOS.
37
-- EE ..... ... -- EE ..... ...
MOS
(1)
cC
ISR 5= (1)
11 2== gg mm( )42542
1 ++ Idsds
v
)( 766
6
76
62
+
=+
=
IggA m
dsds
mv (3)
m
GB1
=mg 6
=mg 6
=cC LC cC
38
-- EE ..... ... -- EE ..... ...
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MOS
(2)
(min)01(max)035
(max) += VVI
VV DDin
(CMR): (7)
5I
3
)(5(max)01
1
(min) satDSssin
:
DSsatDS
IV
2)( = (9)
( : )
.
39
-- EE ..... ... -- EE ..... ...
MOS
40
-- EE ..... ... -- EE ..... ...
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MOS
p-MOS
(max)01)(55
(max) = VVI
VV satSDDDin
(CMR): (7p)
5 =I
1
(min)01(max)03
3
(min) ssin p :
41
-- EE ..... ... -- EE ..... ...
MOS
..
:
. , v
2. , GB
3. ,ICMR
4. , CL
. ,
6.
7. ,Pdiss
42
-- EE ..... ... -- EE ..... ...
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MOS(1)
1.
(n-MOS)
.
2. Miller C . p22.2 GB
60 (10
.
Cc: Lc CC 22.0>
. I5,
SR:cCSRI =5
SR, .
. I5,
43
, .
-- EE ..... ... -- EE ..... ...
MOS(2)
4. (W/L)3 n- :
5/ ==I
LWS
103
'
3 (min)(max)(max))( + VVVVK inDD
S 1. S
(W*L), .-
.
5. p3 >10GB,
Cgs3
Cgs4
(= 0.667 W3L
3C
ox) :
GBC
g
gs
m 102 3
3 >
44
-- EE ..... ... -- EE ..... ...
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MOS(3)
6.
1 = 2 :
5
'
2
2
2211
IK
gSSCGBg mcm ===
7. (W/L)5.
:
mVVVVsatV SSinDS 100maxm n 11
5 =
VDS 5
100mV,
(W/L)5.
2'
55
2
satVK
IS =
45
-- EE ..... ... -- EE ..... ...
MOS(4)
8. (W/L)6 : p2 2.2GB
VSG4 =VSG6: I6:
cLmm gg . 26=6
46mgSS =
'
2
66
gI m=
9. , :
m
maxmin 666 outDDDSDSDS VVsatVVV ===
gm6=2
6gm=( )satVK DS6
'
6
6
6
'
6
62 SK
()
I5 I6
465567=
-- EE ..... ... -- EE ..... ...
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MOS(5)
11.
.
622=g
A mm =
,
766325 ++ IIv SSDDiss 65
I5 I6, (W/L)2/
(W/L)6. .
, I5 I6.
.
12.
47
.
-- EE ..... ... -- EE ..... ...
.. MOS(1)
..
.
,
60. L= 1 m.
48
-- EE ..... ... -- EE ..... ...
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.. MOS(2)
49
-- EE ..... ... -- EE ..... ...
.. MOS(3)
1. L = 1 m.
2. Miller Cc:
3 pF.
pFCC Lc 2.222.0 ==
3. I5: ACSRI c 301010103612
5 ===
. 3
151030
)/(2
6
33 =
==
LWS
: (W/L)3 = (W/L)4 =15.
... +
5. p3 >10 GB: (Cox= 2.47 fF/m2)
'
sradCLWC
gp
ox
p
gs
m /1081.2667.022
9
33
33
3
33 =
=
50
-- EE ..... ... -- EE ..... ...
448 z. p3 >>10 GB (= 50 z)
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.. MOS(4)
. gm1: SCGBg cm 25.9410321051 ===
: 0.379.230110
.5
'
121 ==== IK
gSSN
m
7. (W/L)5.VDS5:
VVDS 35.085.0310110
1030)5.2(1
6
6
5 =
=
(W/L)5 : 5.449.4)35.0(10110
10302 26
6
5 = =
S
()
51
-- EE ..... ... -- EE ..... ...
.. MOS(5)
'. m6 m1 . . Pm 444 ==
: 9425.94
150
.15
4
646 ===
m
m
g
gSS
6: AAS
gI m 955.94
9410502
)105.942(
2 6
26
'
2
66 =
==
9. , (W/L)6 :
7.37
25.21050
105.9426
6
'
66 =
==
satVK
gS m
S6, ,
52
-- EE ..... ... -- EE ..... ...
.
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.. MOS(6)
10. W/L :1095 6
=
==
VOUT (min) :
.1030
.6
VsatVV DSout 351.085.0952
)((min) 7 =
==
0.5 V .
11.
.
VVgg
A mmv /7696105.9421045.9222
66
6662 ===
....766325
( )( ) mWVAAVVIIP SSDDdiss 625.05)9530(65 =+=++=
53
-- EE ..... ... -- EE ..... ...
.. MOS(7)
, , ,
WL 20
.
.
12
