AD8551/AD8552/AD8554
* VOLTAGE NOISE REFERENCE OF 42nV/rt(Hz)
SPICE macro-model for the AD855x
*
* AD8552 SPICE Macro-model
VN1 80 98 0
* Typical Values
RN1 80 98 16.45E-3
* 7/99, Ver. 1.0
HN 81 98 VN1 42
* TAM / ADSC
RN2 81 98 1
*
*
* Copyright 1999 by Analog Devices
*
* INTERNAL VOLTAGE REFERENCE
*
* Refer to “README.DOC” file for License
* Statement. Use of this model indicates
* your acceptance of the terms and
* provisions in the License Statement.
*
EREF 98 0 POLY(2) (99,0) (50,0) 0 .5 .5
GSY 99 50 (99,50) 48E-6
EVP 97 98 (99,50) 0.5
EVN 51 98 (50,99) 0.5
*
* Node Assignments
* LHP ZERO AT 7MHz, POLE AT 50MHz
*
noninverting input
*
*
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1
inverting input
E1 32 98 POLY(2) (4,6) (11,12) 0 .5814 .5814
*
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2
positive supply
R2 32 33 3.7E+3
*
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negative supply
R3 33 98 22.74E+3
*
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output
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C3 32 33 1E-12
*
*
*
* GAIN STAGE
.SUBCKT AD8552
99 50 45
*
*
G1 98 30 (33,98) 22.7E-6
R1 30 98 259.1E+6
* INPUT STAGE
*
CF 45 30 45.4E-12
M1
M2
4
6
7
2
8
8
8 PIX L=1E-6 W=355.3E-6
8 PIX L=1E-6 W=355.3E-6
D3 30 97 DX
D4 51 30 DX
M3 11 7 10 10 NIX L=1E-6 W=355.3E-6
M4 12 2 10 10 NIX L=1E-6 W=355.3E-6
RC1 4 14 9E+3
*
* OUTPUT STAGE
*
RC2 6 16 9E+3
M5 45 46 99 99 POX L=1E-6 W=1.111E-3
M6 45 47 50 50 NOX L=1E-6 W=1.6E-3
EG1 99 46 POLY(1) (98,30) 1.1936 1
EG2 47 50 POLY(1) (30,98) 1.2324 1
RC3 17 11 9E+3
RC4 18 12 9E+3
RC5 14 50 1E+3
RC6 16 50 1E+3
*
RC7 99 17 1E+3
RC8 99 18 1E+3
* MODELS
C1 14 16 30E-12
C2 17 18 30E-12
I1 99 8 100E-6
I2 10 50 100E-6
V1 99 9 0.3
*
.MODEL POX PMOS (LEVEL=2,KP=10E-6,
+ VTO=-1,LAMBDA=0.001,RD=8)
.MODEL NOX NMOS (LEVEL=2,KP=10E-6,
+ VTO=1,LAMBDA=0.001,RD=5)
.MODEL PIX PMOS (LEVEL=2,KP=100E-6,
+ VTO=-1,LAMBDA=0.01)
.MODEL NIX NMOS (LEVEL=2,KP=100E-6,
+ VTO=1,LAMBDA=0.01)
.MODEL DX D(IS=1E-14,RS=5)
.ENDS AD8552
V2 13 50 0.3
D1
8
9 DX
D2 13 10 DX
EOS 1 POLY(3) (22,98) (73,98) (81,98)
7
+ 1E-6 1 1 1
IOS
*
1
2 2.5E-12
* CMRR 120dB, ZERO AT 20Hz
*
ECM1 21 98 POLY(2) (1,98) (2,98) 0 .5 .5
RCM1 21 22 50E+6
CCM1 21 22 159E-12
RCM2 22 98 50
*
* PSRR=120dB, ZERO AT 1Hz
*
RPS1 70 0 1E+6
RPS2 71 0 1E+6
CPS1 99 70 1E-5
CPS2 50 71 1E-5
EPSY 98 72 POLY(2) (70,0) (0,71) 0 1 1
RPS3 72 73 15.9E+6
CPS3 72 73 10E-9
RPS4 73 98 16
REV. 0
–19–
ADI [ ADI ]
