NTE NTE1230 Datasheet
NTE1230
Integrated Circuit
FM Multiplex Stereo Demodulator
Description:
The NTE1230 is a monolithic integrated circuit in a 16–Lead DIP type package designed for use as
an FM stereo multiplex demodulator. This device includes 2 channel amplifiers that can make the
0dB line output.
Absolute Maximum Ratings:
Maximum Supply Voltage, V
Lamp Driver Current, I
L
Preamp Output Stage Current, I
Operating Temperature Range, T
Storage Temperature Range, T
Recommended Operating Conditions:
Supply Voltage, V
CC
Electrical Characteristics:
(TA = +25°C unless otherwise specified)
max 20V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CC
, I
6
8
opr
stg
–20° to +80°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–40° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(TA = +25°C unless otherwise specified)
(TA = +25°C, VCC = 9V, f = 1kHz, Input = 100mV, L + R = 90%,
40mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pilot = 10% unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Quiescent Current I
Lamp “ON” Level V
Hysteresis of Lamp “ON – OFF” – – 4.0 dB
Channel Separation
Left Channel
Right Channel 35 – – dB
CC
L
Sep
– 15 20 mA
50 – 100 mV
35 – – dB
9V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total Harmonic Distortion
Left Channel
Right Channel – – 1.5 %
Output Voltage
Left Channel
Right Channel 200 – 400 mV
Channel Balance Ba – – 2.0 dB
SCA Rejection L + R = 80%, Pilot = 1–%, SCA = 10% – 55 – dB
THD
V
O
– – 1.5 %
200 – 400 mV
Pin Connection Diagram
Input
Bypass
GND
Pilot Lamp
Lt Ch Amp Input
Lt Ch Amp Output
Rt Ch Amp Input
Rt Ch Amp Output
1
2
3
4
5
6
7
8 9
16 9
16
Bypass
Bypass
15
19kH
14
13
12
11 MPX Output Lt
10 MPX Output Rt
Trap
Z
Trap
38kH
Z
38kHZ Trap
V
CC
.245
(6.22)
Min
.260 (6.6) Max
18
.785 (19.9) Max
.300 (7.62)
.200 (5.08)
Max
.100 (2.54)
.700 (17.7)
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