|
EDA365欢迎您登录!
您需要 登录 才可以下载或查看,没有帐号?注册
x
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 MACROMODELS5 g5 w8 b+ C0 @6 |7 z* Y8 z$ w
* -------------------------
A) l+ U! i% x2 M; X9 s* FEATURES:
4 {% G l3 [9 y3 R6 [$ \* 300MHz -3dB Bandwidth
. y! Z9 a9 z n* 600V/uS Slew Rate
8 V" f4 N5 M* a7 {3 i& v$ Y/ g9 X* 5.5mA Typical Supply Current
1 e: P+ k* Y1 K' B' q+ l8 E* 120mA Typical Output Current
- M; ~0 ?2 [, k& V# P0 |0 F4 T2 r* Rail-to-Rail Outputs+ U9 Y8 U& ?& z& t
* Available in 5-Pin SOT23-5 (MAX4212)" W8 i8 {9 Y2 X, Z
*. x, T4 U5 A8 Y# ^ z& k
*. H9 ]$ Q7 a3 c3 [" D' E, h
* PART NUMBER DESCRIPTION1 A! W4 ?& V* t [4 x
* ___________ _____________________________
" ~, b2 ^1 Y8 }" {1 W: u/ l* MAX4212 300MHz, Rail-to-Rail Op Amps ; J; S3 ~- H: j9 H& L2 r
*
4 X7 Q1 R1 {# }4 ]*, w! h( c7 c) q% } M# _1 q
* ////////////// MAX4212 MACROMODEL //////////////////
0 x5 ` S- o6 T( a! ^% s*
3 q9 `5 Q) Q9 F( [* ====> REFER TO MAX4212 DATA SHEET <====
6 M3 r, Q( m1 E! S. o: }*
8 m0 M' ?; f+ N1 N J1 C) x6 t* connections: non-inverting input) |; _( E4 G# U
* | inverting input
2 G9 C* J9 J6 g4 d- R* | | positive power supply
+ O" ~7 Y8 g$ z. ?% @: d; X* | | | negative power supply8 i& {1 M) o% l+ I( V# ^
* | | | | output; S, e6 K( E' e L
* | | | | |
! }2 [5 h) c4 [) m* | | | | |
s! e8 w3 B/ y) D' j3 O( `* | | | | |& c1 B, {* t/ @ l
* OUTPUT CONNECTS: 1 2 99 50 97' `/ I1 }8 M: K! G" {9 p
*2 q R4 w- Y- I V* Q
*
, `' J2 M1 h) p.SUBCKT MAX4212 1 2 99 50 97* S+ S$ p G* U! h" W6 q
****************INPUT STAGE**********************
V7 A; z- q! j, S9 DI1 99 4 .5e-3
* J4 x0 w6 a! @: u( nIBIASE 1 2 5.5ua0 R3 u+ A' p. L
M1 5 2 4 99 MOSFET
* u2 E3 l" O5 r+ ]R3 5 50 2828
1 q8 W: P @) l _- S9 T2 j0 SM2 6 7 4 99 MOSFET, v* _/ f/ r0 v
R4 6 50 2828) L7 p5 ~1 Z V t* L
CI1 1 0 2P, `/ a! w7 F$ E% j# _+ g
CI2 2 0 2P; V, L* W0 s$ w, E; P/ o* L! |
*DP1 1 99 DA
i$ ]2 N7 ~! R2 b7 C% a, V*DP2 50 1 DA0 N7 U: F# b! y! Z( c( h: x
*DP3 2 99 DB
3 h% l- U0 Z( s. {4 }# S*DP4 50 2 DB# z) R0 Q3 R( \ D% U; {3 S1 s9 u% D
************************
_9 b1 w: u9 z8 Y9 F% z************ GAIN, 1ST POLE, SLEW STAGE************
0 p6 J) j* V5 i2 E5 {7 Y' G5 zEH 99 98 99 50 0.5
: D% D2 Z5 n: L7 z/ Z5 K6 V2 k4 `7 LG0 98 9 5 6 7.87e-30 t; l1 o3 t/ y1 E% O8 K6 C% e
VB 9 10 0V
8 S$ O9 H+ ?8 B1 ^- iR0 98 9 127E3
. e1 [5 k" C0 u, j4 ^( u& \# D v* jC3 10 98 1.488e-11
( e; d1 ~$ q. D6 p, l0 w$ u% m*C3 10 98 1.166e-11
! F! g8 Q) n& {3 j*** ***********& Q8 U% r0 K/ M3 o
D1 9 111 DP4 {/ I% C$ Q7 J. w6 _
D2 112 9 DP
7 R# u3 n) I6 p& t WV11 99 111 50MV( B" N/ g* ?$ `( y! K5 e; y f. a
V12 112 50 50MV
, i$ L- ]; z; c7 m************( @8 b F) S1 D% V! [$ Q3 ^
I2 99 50 5.1mA
7 t6 A3 H! t* v2 O# c) \VOS 7 1 0v H/ m; K7 h& b2 n
******** POLE STAGE **********
0 t9 h7 k" @ j% P+ H4 I' `G3 98 15 10 98 1E-33 a% E. W" M9 o
R12 98 15 1E3% E# X( O) r; j6 i }8 {3 ~
***************************
" x! M9 ~* o% o. I6 W5 s! Z3 X*********** change for second pole
5 P" ?" ~% S( k3 cC5 98 15 .48p
2 @+ M" ? g) K, {*
6 p7 k: m% }$ s$ {! E: @# w$ V*************OUTPUT STAGE****************. o* T3 b2 x. i I! ~ }
F5 99 38 VA8 1
/ h# s/ ], @8 Y1 f& @* tD9 40 38 DX8 A1 s$ ?% \% N' J- n; X
D10 38 99 DX5 M' D1 ^9 Y* h2 { |
VA7 99 40 0
& A5 k7 [& g# l, pG12 98 32 15 98 1E-3* N5 }# p* q! h. `) h, g+ A
* ^ INSERT NODE FROM LAST STAGE HERE
" g. ]! s9 z# F+ L. x! fR15 98 32 1E3
& K1 o$ F3 U# [& D5 q' W, v3 z*D3 32 36 Dx# Z+ w7 v! y8 y2 G4 o
*D4 37 32 Dx
; M h, n% ~. s*V5 34 37 .3V
# r% }: d* b9 d& S" K/ k/ f) o+ D; T*V4 36 34 -.3V# i; x' C1 X! F) N5 X; ~# p& }
*** V5,V4 SET ISC3 A; m$ s H: Y6 Z$ S
R16 34 97 7.55
/ u6 Z- r6 }! o- \ u5 IE1 99 33 99 32 1& w9 v, d. ~9 X! h- S# N" w
VA8 33 34 0V
3 x" X8 X9 d8 K6 l******************************************! L% n# j: v! A, x! D
.MODEL DA D(IS=100E-14 RS=.5K)
z0 G6 C! T8 ^+ B; k.MODEL DB D(IS=100E-14 RS=.5K). l- l7 U' Y# }
.MODEL DX D(IS=100E-14)
, R. Y1 o! A9 ~1 C.MODEL Dp D(N=0.05), `7 t) ^ `! G! z
.MODEL MOSFET PMOS(VTO=0 KP=1.8E-3)+ [7 p I/ @$ a8 S" ]
*VTO ESTABLISHES INPUT VOLT. RANGE , was -1.72 `8 n- b7 E6 A
**% R2 j7 o, l5 ^0 c; L V: ~; h
.ENDS
7 i3 c! Y! d* R9 H' R- b3 s6 ^% u 1 t( i5 C# C) s- I5 m3 g# s
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
3 ^! ~* z; L1 T, x小弟初学模拟电路,请各位大侠指教啊。多谢, C! r+ l: m5 b# \% E. |& J
|
|