*EL8100, EL8200, EL8300 and EL8400 -- Model Rev. A 8/01/2003
*low power, wide bandwidth amplifier---200MHz
*The AC response for this model is based on Vs=5V and RL=1K
*SR,open loop gain, voltage noise and current noise are modeled.
* connections:        +input
*                       |  -input
*                       |    | +Vsupply
*                       |    |    | -Vsupply
*                       |    |    |    |  output
*                       |    |    |    |    |
.subckt EL8100          3    2    7    4    6
*
*Input Stage
vos 9 5 0.8mV
ios 5 500 0.1uA
i1 7 14 200uA
i2 7 15 200uA
r1 14 12 600
r2 15 13 600
r3 14 15 480
r4 10 4 800
r5 11 4 800
q1 10 9 12 qp
q2 11 2 13 qp
*
* voltage noise generator
ie 0 30 3.121uA
ca 30 31 1GF
v1 31 0 dc 0V
de 30 0 den
h1 5 3 v1 6k
*
* current noise generator
iin 0 32 3.121uA
di 32 0 din
cb 32 33 1GF
v2 33 0 dc 0V
f1 2 9 v2 0.8
*
*Gain Stage
g1 16 500 11 10 1.67e-3
r6 16 500 50k
vs1 16 17 0V
cc1 17 20 2.1p
*
*G2 stage
g2 18 500 16 500 1e-3
r7 18 500 1k
*
*G3 stage
g3 19 500 18 500 5.22e-3
r8 19 500 2.73k
cc2 19 20 4.5p
*
*Output satage
g4 20 500 19 500 6.15e-2
r9 20 500 6.2k
l1 20 21 6nH
vs2 21 6 0V
c0 6 500 2p
*
*voltage reference
eref 500 0 poly(2) (7,0) (4,0) 0 0.5 0.5
rref 500 0 1M
esp 499 500 poly(1) (7,4) 0 0.5
esn 498 500 poly(1) (4,7) 0 0.5
*
*Output swing and current limiting
* sourcing current
d9 6 100 dx
d10 100 101 dx
vm1 7 101 0.05
f3 100 101 poly(1) vs2 -0.08 1
*sinking current
d11 102 6 dx
d12 103 102 dx
vm2 103 4 0.05
f4 103 102 poly(1) vs2 -0.15 -1

* Supply current
idc 7 4 1.6m
*models
.model qp pnp  
+ BF=70 VAF=17 IS=5e-15
+ TF=2.5e-10 RB=2 RC=2 RE=2
+ CJE=0.03p CJS=0.088p 
+ CJC=.03p 
.model din d(kf=1.92e-15 af=1)
.model den d(kf=1.28e-15 af=1)
.model dx d(N=0.001)
.ends EL8100
*$