NTE7067
Integrated Circuit
Audio IF Detector for High Quality
Multi–Channel TV & VCR
Description:
The NTE7067 is a 4.5MHz to 6.5MHz intercarrier audio IF detector for high–quality multi–channel TV
and VCR sound systems. It is designed for use is quasi–parallel configurations to eliminate audio
buzz and minimize other side–effects present in conventional detection circuits.
This device includes a 3–stage IF amplifier, IF AGC circuit, and transistor intercarrier audio detection
circuit. The NTE7067 operates from a single 8 to 10V power supply and is available in a 9–Lead SIP
type package.
Features:
D
Compact Package
D
Excellent Audio S/N Characteristics
D
Coil–less Circuit
Absolute Maximum Ratings: (T
A
= +25
°
C unless otherwise specified)
Maximum Supply Voltage
V
CC
max
12V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
3
max (V
CC
= 12V)
12V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Allowable Power Dissipation (T
A
≤
+65
°
C), P
d
max
540mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Output Current, I
6
max
3mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
–10
°
to +65
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
–55
°
to +125
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Operating Characteristics: (T
A
= +25
°
C unless otherwise specified)
Recommended Supply Voltage, V
7
9V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Voltage Range, V
7
op
8 to 10V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= +25
°
C, V
CC
= 9V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ Max
Unit
Supply Current
I
7
V
3
(IF AGC) = 4V
17
22
32
mA
Input Sensitivity
VI
IF input level for 0.35V
P–P
detector
output with 40% modulation
34
42
50
dB
µ
AGC Range
GR
(Maximum input for V
O
= 0.35V
P–P
) – V
i
60
70
–
dB
Maximum Input Level
V
i
max
IF input level for detector output increase
of 1dB
100
200
–
dB
µ
Detector Output Amplitude
V
06
4.5MHz output level, P/S = 13dB
90
130
180 mVrms
Audio S/N
S/N
f
p
= 58.75MHz, 87.5% staircase modu-
lation, f
s
= 54.25MHz, (S: FM
±
25kHz,
f
m
= 400Hz N: Non–modulation)
P/S = 13dB
50
56
–
dB
Pin Connection Diagram
V
CC
IF AGC Filter
TP (Open)
Detector Output
Detector Filter
IF Input
IF Input
N.C.
9
8
7
6
5
GND
4
3
2
1
(Front View)
.862 (21.89)
.118 (3.0)
.177
(4.5)
.110
(2.8)
.059 (1.5)
.100 (2.54)
.031 (0.78)
1
9
.053 (1.35)