Fairchild Integra II Series, 692AD/TXI, 692AD Instruction Manual
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FAIRCHILD
DOUBLE
AMPLIFIER
CARDS
---
MODEL
692AD
-
692AD/TXI
INTEGRA
II
SERIES
1B692AD/268
INSTRUCTION MANUAL
-
AIRCHILD
SOUND
EQUIPMENT
CORPORATION
,
10-40 45th Avenue, Long Island City, N.Y. 11101 , 212 784-6163
www.SteamPoweredRadio.Com
www.SteamPoweredRadio.Com
FAiiiCiiILD
MODEL
692AD
AHFLIFIZR
CARD
DV
DESCRIPTION
The
MODEL
692AD
is
designed
to
provide
amplification
for
micro-
phone
signals
as
well
as
boosting
of
signals
up
to
levels
of
+18dbm.
This
card
can
be
used
in
stereo
circuits
or
cascading
(one
amplifier
feeding
the
other).
The two
sections
of
the
card
are
completely
isolated,
providing
maximum
flexibility
for
the
system
designer.
The
advantages
of
the
"package"
are
compactness
of
design,
excellent
performance
and
economics.
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ERFORMANCE
SPECIFICATIONS
GAIN•··•••·••·••·••·•••••··•
Without
transformer
from
22
to
51
db,
continuously
variable
With
input
transformer,
36
to
66
db
FREQUENCY
RESPONSE
•.•••••••••
From 20
to
20K, ±
.5
db
DISTORTION
(THD)
••••••••••••
At
+17.5
dbm
out
.35%
NOISE
w/tlAX.
GAIN
.•..•••••••
POwER
REQUIREMENTS••••••••••
Without
transformer
128
db
in-
put
noise
with
open
input
With
transformer,
primary
shorted,
139 db
input
noise
24V
DC
at 6 ma
maximum
I L
1-"'
INPUT
Il'iPEDANCE
•••••••••••••
Without
transformer
greater
than
100K
With
transformer
200 ohms
OUTPUT
IMPED.ANGE··••••••··••
15
ohms (recommended
load
impe-
dance
150 ohms
up,
inductive
or
non-inductive)
tlA.X.
PO./ER
HANDLING
CAPABIL-
ITIES
• • • • • • • • • • • • • • • • • • • • +18 d
bm
CIRCUIT
DESCRIPTION
Both
amplifiers
on
the
692AD
card
are
identical.
Each one
is
capable
of
maximum
output
of
+18 dbm. The
amplifier
is
Class
AB,
direct
coupled,
with
minimum
of
18
db
of
negative
feedback.
Out-
put
stage
is
complementary
symmetry
circuit,
using
silicon
tran-
sistors
exclusively.
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