m€wmormKMmS
2900
Mauricia
Ave.
Santa
Clara,
CA
95051
(4081
247-8046
Voltage
Controlled
Filter
4
The
CEM
3320
is
a
high
per-
demanding applications, pro-
formance voltage contraEled
vision has been made te allow
four-pole filter complete with trimming for
improved
control
on-chip
voltage controllable
voltage rejection.
Each
filter
resonance.
The
four independent
section features
a
novel variable
sections
may
be
interconnected
gain cell which, unlike the
to provide
a
wide variety
of
filter
traditional
cel!. is fully ternpera-
responses,
such
as
low
pass,
high ture compensated, exhibits a
pass, band
pass
and
all pass. A
better signal-to-noise ratio and
single input exponentially
con-
generates
its
low
distortion pre-
trols
the
frequency over greater
dominanrly in
the
second
than
a
ten octave range with
harmonic.
The
device further
little control voltage
feed-
includes
a
minus two volt regu-
through.
Another input controls
lator
te
ensure
low
power
dis-
the
resonance in
a
modified
sipation and consequent
low
linear
manner
from
zero
to
low
warm-up
drift even with
k15
1
distortion oscillation.
For
those
volt supplies.
Circuit
Block
and
Connection
Diagram
FBECI.
CNTL.
A
T
INPUT
;
'
SIGMAL
INPUT
I
I
m
Low
Cost
I
Voltage Controllable
Frequency:
12
octave range
minimum
Voltage Controllable
Resonance:
From
zero
to
oscillation
Accurate Exponential
Frequency Scale
I
Accurate
Linear
Resonance
Scale
Low Control Voltage
Feed-
through: -45dB typical
Filter
Configurable into Low
Pass,
M
igh
Pass,
AI
l Pass. etc.
II
Large Output:
12V.P.P.
~y
pical
R
Low
Noise: -86dB
typical
I
Low
Distortion in
Passband:
0.1%
typical
II
Low
Warm
Up
Drift
Configurable
into
Low
Distortion Voltage Controlled
Sine
Wave
Oscillator
f
15
Volt
Supplies
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