*EL5130-- Model Rev. A 2/013/2004
*low power, wide bandwidth amplifier---500MHz
*The AC response for this model is based on Vs=+/-5V
*SR,open loop gain and are modeled.
* connections:        +input
*                       |  -input
*                       |    | +Vsupply
*                       |    |    | -Vsupply
*                       |    |    |    |  output
*                       |    |    |    |    |
.subckt EL5130          3    2    7    4    6
*
*Input Stage
q3 11 3 13 npn5134
q4 12 2 13 npn5134
q1 7 10 11 npn5134
q2 7 10 12 npn5134
i1 13 4 0.6mA
r1 7 10 3.7k
i2 10 4 157u
*
* 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 1.2k
*
* current noise generator
*iin 0 32 3.121uA
*di 32 0 din
*cb 32 33 1GF
*vcin 33 0 dc 0V
*f1 2 3 vcin 0.5
*
*Gain Stage
g1 14 500 12 11 0.04
r2 14 500 424k
vs1 14 14a 0V
c1  14a 500 4.1p
*Slew rate limit stage
*rising limit
vpl 7 23 dc 1V
d1 14a 23 dx
d2 14a 24 dx
d3 24 23 dx
fp1 24 23 poly(1) vs1 -10e-4 1
*falling limit
vnl 26 4 dc 1V
d4 25 14a dx
d5 26 14a dx
d6 25 26 dx
fn1 25 26 poly(1) vs1 -10e-4 -1
*G2 stage
g2 15 500 14a 500 0.01
r10 15 500 100
c5 15 500 1.3p
*
*positive feedback stage
c4 21 14 0.01p
r11 6 21 100
*
*Output stage
q8 4 15 17 pnp5134
q6 7 15 18 npn5134
q5 7 17 20 npn5134
q7 4 18 19 pnp5134
i4 7 17 1.5m
i3 18 4 1.5m
r3 20 6 10
r4 19 6 10
*
*voltage reference
eref 500 0 poly(2) (7,0) (4,0) 0 0.5 0.5
rref 500 0 1M
*
*Output swing and current limiting
* Supply current
idc 7 4 0.001m
*models
.model PNP5134 pnp  
+ BF=70 VAF=17 IS=5e-15
+ TF=4.5e-11 RB=0 RC=0 RE=0
+ CJE=0.03p CJS=0.088p 
+ CJC=.03p 
.ENDS
.model NPN5134 npn 
+ BF=100 VAF=40 IS=5e-15
+ TF=4.5e-11 RB=0 RC=0 RE=0
+ CJE=0.03p CJS=0.088p 
+ CJC=.03p 
.ENDS
.model din d(kf=1.92e-15 af=1)
.model den d(kf=1.28e-15 af=1)
.model dx d(Is=1e-14 Cjo=.1pF Rs=.1 N=0.001)
.ends EL5130