EL4094C
Video Gain Control/Fader
R
810 0 290k
OL
EL4094C Macromodel
Ccomp 810 0 3.5p
This macromodel is offered to allow simulation of
general EL4094 behavior. We have included
these characteristics:
b
G1 10 0 810 0 10
R
10 0 0.1
OUT
L
OUT
10 4 350.200n
RL
OUT
10 4 80
Small-signal frequency response
Output loading effects
Input impedance
Off-channel feedthrough
Output impedance over frequency
r1 10 910 10
c1 910 911 300p
r2 911 0 90
***
*** Input channel A
***
R
INA
22 910 16k
Signal path DC distortions
ra 11 0 1k
V
V
I-V characteristics
overdrive recovery delay
GAIN
Cfeedthrougha 23 8 130p
Rfeedthrougha 8 22 1.0
Ela 23 22 1 0 1.0
GAIN
100% gain error
Rspice3 23 22 1E12
These will give a good range of results for various
operating conditions, but the macromodel does
not behave identically as the circuit in these ar-
eas:
b
G1a 11 0 POLY(1) (22, 910) 0.0 0.001 3E
G2a 810 0 POLY(2) (11,0) (13, 0) 0.0 0.0 0.0 0.0 0.001
b
6
***
***Input channel B
***
Temperature effects
Signal overload effects
R
25 910 16k
INB
rb 20 0 1k
Signal and /V operating range
G
Current-limit
Video and high-frequency distortions
Supply voltage effects
Slewrate limitations
Noise
Cfeedthroughb 24 1 130p
Rfeedthroughb 1 25 1.0
E1b 24 25 8 0 1.0
Rspice4 24 25 1E12
b
G1b 20 0 POLY(1) (25, 910) 0.0 0.001 3E
G2b 810 0 POLY(2) (20,0) (19, 0) 0.0 0.0 0.0 0.0 0.001
b
6
***
Power supply interactions
***Gain control
***
Rspice1 13 0 1E12
Rspice2 18 0 1E12
R10 14 0 1E7
The macromodel’s netlist is based on the Pspice
simulator (copywritten by the Microsim Compa-
ny). Other simulators may not support the
POLY function, which is used to implement mul-
tiplication as well as square-low nonlinearities.
b
C10 14 0 8E 16
D1 14 15 Dclamp
D2 16 14 Dclamp
******
******
*
*
*
e
.model Dclamp D (TT 200n)
V1 15 0 4999.3
V2 0 16 4999.3
V3 13 17 0.5
V4 19 18 0.5
V
INB
V
l
l
l
l
l
OUT
/V
l
l
l
G
*
*
V
l
l
G
b
G10 14 0 7 6 0.001
V
l
INA
b
G11 7 6 14 0 2E
E10 17 0 14 0 1E
b
8
*
.subckt EL4094subckt
l
l
l
l
b
4
(1
4
6
7
8)
b
E11 18 0 14 0 1E
b
4
***
***
.ends
******
11
ELANTEC [ ELANTEC SEMICONDUCTOR ]
