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如题，预算放大器的spice模型能否模拟它的噪声特性呢，比如max4212厂商提供的spice模型为* MAX4212 FAMILY MACROMODELS
1 ]5 I( C! J; a& D7 w+ O3 [# G% I* -------------------------
# `1 @- ]+ B+ z* e" w, O/ T9 @2 M. w* FEATURES:$ @4 R, [: M- Z& M4 @
* 300MHz -3dB Bandwidth' ^" n4 d8 T4 z& }
* 600V/uS Slew Rate4 z; r4 m' N7 J: R. {
* 5.5mA Typical Supply Current4 x% E; [) r, a) e8 D( Z! ?; |( B
* 120mA Typical Output Current. @4 O" h" L% a0 f
* Rail-to-Rail Outputs
; Z4 U% p6 N$ L. s$ `* Available in 5-Pin SOT23-5 (MAX4212)5 M3 N" H( t1 y4 ?$ \: A! T( B
*3 ~+ F2 s$ a0 P, V$ U
*4 E" r+ G1 e7 U! `8 r
* PART NUMBER DESCRIPTION$ K. o( Z6 r, b; t1 b; R0 b5 ~
* ___________ _____________________________6 y7 p- z0 H! k' Z
* MAX4212 300MHz, Rail-to-Rail Op Amps
% b0 C3 F( G4 `+ ?& i2 e*
9 q( J* T3 T4 T5 O5 u*
" a$ N+ [2 f" p* ////////////// MAX4212 MACROMODEL //////////////////
8 X, Q: T$ f4 F*; ? M) \" u& n4 o
* ====> REFER TO MAX4212 DATA SHEET <====
4 ]5 j( `& ~+ l% B5 m*" w6 u- L! a9 t: _
* connections: non-inverting input
4 H2 `& u% O8 u; b% m7 C* | inverting input
) e& n& s' C+ j, G4 m: |/ ^1 G* | | positive power supply- c% \+ L5 N5 W
* | | | negative power supply
9 [% c4 ~, E& [( B2 E- H. s& l& j* | | | | output1 C: @/ G2 }. P, I% ^4 z9 G; J
* | | | | |" d2 |! l0 }( T2 n; S9 W5 I
* | | | | |
6 R* G; `* T7 Z' h0 A* | | | | |
. L+ u# Q8 F+ \2 Z* OUTPUT CONNECTS: 1 2 99 50 972 K% B) |4 _) _; F: z. h# @
*
D2 u/ d* T$ A+ T*
5 ]4 X F$ O, H/ g0 e& f' n1 w.SUBCKT MAX4212 1 2 99 50 974 D" k; c% P( a6 I/ `9 d
****************INPUT STAGE*********************** `" Y1 J: P2 {/ x% i
I1 99 4 .5e-3- ~7 U1 {4 h) a
IBIASE 1 2 5.5ua
v$ r8 r6 o; a! N" f- LM1 5 2 4 99 MOSFET3 p$ r% v; A4 F8 ^) y' L# E
R3 5 50 28287 C2 }, G9 h7 P& z- z# v
M2 6 7 4 99 MOSFET' r: J9 q j; @( K4 d& J6 J* Z! N8 p
R4 6 50 2828
/ z7 J( i2 k% S9 VCI1 1 0 2P
/ c9 k( v+ j4 _$ ?; h) q9 p# OCI2 2 0 2P
- f I; s1 u+ u) s$ F( [/ I- w*DP1 1 99 DA
, G' x: S, b/ p& I*DP2 50 1 DA x- d/ d, r' h7 w0 p
*DP3 2 99 DB* R' ?8 `+ f3 m
*DP4 50 2 DB* M1 F# L' H) C' X' A6 k) ], ?
************************
2 q9 `* F" t; }9 A% F; u1 M************ GAIN, 1ST POLE, SLEW STAGE************
) g3 T8 a) t2 }5 u$ b0 nEH 99 98 99 50 0.5
& z2 N8 Y$ o- C% R; o+ k! z! cG0 98 9 5 6 7.87e-3
, J" k8 J, B: y9 k; QVB 9 10 0V
/ d( N4 S) A, E6 d$ V; zR0 98 9 127E3
4 H( V! w7 B0 c; Z1 aC3 10 98 1.488e-11
9 ]5 `7 |5 X& T8 X* i*C3 10 98 1.166e-11
% M2 T: O& l- Y1 q*** ***********7 P/ `. l! r2 X9 S: b
D1 9 111 DP
: M3 \; j, a3 G+ LD2 112 9 DP
! V* ^& @" m: X3 R! g5 {$ kV11 99 111 50MV& E, V& s! \5 e; Z, e0 W
V12 112 50 50MV
/ k8 _2 c( A% W************
* W0 \! Z. G- f4 G" g. m3 x2 A2 {I2 99 50 5.1mA& G D0 r I+ D
VOS 7 1 0v. w8 Q- _5 H* e' l2 A
******** POLE STAGE **********
( j. ^" e5 M2 p" Y X& T; j1 F2 \7 HG3 98 15 10 98 1E-3- N- H9 A/ P4 x5 Y
R12 98 15 1E3
( A8 z, L+ o5 i/ `***************************% U1 M$ o4 ?/ v" _ C) I* W
*********** change for second pole% ~4 f0 N; f% }9 |
C5 98 15 .48p
5 { E9 q: r9 X7 L$ `- ~*
& u1 S o( O ?5 Z" z9 B*************OUTPUT STAGE****************
" f. c* V! E. x, S0 G0 DF5 99 38 VA8 1! ]) x0 E: G! u2 B! D% S% e
D9 40 38 DX
! Z+ q2 d v0 T9 T4 L9 r2 T& RD10 38 99 DX
! Q P; E- P7 \" P- ^VA7 99 40 0; R0 M1 O! v9 S3 \; M0 Q
G12 98 32 15 98 1E-3: t S" `. D( D( Z U* ?8 f0 @7 K
* ^ INSERT NODE FROM LAST STAGE HERE
7 n0 @3 [& A2 k! P' HR15 98 32 1E3
$ u) q. D. D; \# e8 J# \7 f- H3 x*D3 32 36 Dx
- w8 B8 y: z% y7 n/ i*D4 37 32 Dx0 D" Q0 M7 i6 e( G6 V* m2 n
*V5 34 37 .3V
. H+ G" s0 |* z2 k# \*V4 36 34 -.3V4 D, p4 Z/ m5 Q$ N/ e
*** V5,V4 SET ISC
, x( D" P# S9 g G2 n/ K+ QR16 34 97 7.55
# V; |3 S+ z3 M+ yE1 99 33 99 32 1: t+ {' I% b" V* o( z! j
VA8 33 34 0V
' h! V4 c$ Z/ g/ N; k******************************************
8 W" _1 I' [% {5 g.MODEL DA D(IS=100E-14 RS=.5K)* T8 N& V6 k& b( U6 A
.MODEL DB D(IS=100E-14 RS=.5K)) Z9 ]8 b1 V% b9 D( A
.MODEL DX D(IS=100E-14)1 `0 f: g! x1 N7 ~4 G
.MODEL Dp D(N=0.05)) H6 F% F2 S* q; q1 E5 K9 p4 C
.MODEL MOSFET PMOS(VTO=0 KP=1.8E-3)
3 M/ v5 X% X, {/ M! P+ y w*VTO ESTABLISHES INPUT VOLT. RANGE , was -1.7
" ]* d. a/ E' m**
4 q# ]+ C2 a7 U3 i! ? h.ENDS U4 h% K" E9 Z2 O. |1 g
5 x8 W& g/ e" I# n4 }$ O4 x用cadence中提供的ac 分析中的noise分析对含有max4213的电路进行噪声分析时，仿真的噪声曲线包含了该芯片的噪声么7 k0 n4 u/ }- A* _& T A
小弟初学模拟电路，请各位大侠指教啊。多谢$ E+ u9 [; o! q- N6 e' [7 g
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发表于 2011-6-15 16:24
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