NTE801
Integrated Circuit
FM Stereo Demodulator
Description:
The NTE801 is a monolithic device in a 14Lead DIP type package designed for use in solidstate
stereo receivers.
Features:
D
Requires No Inductors
D
Low External Part Count
D
Only Oscillator Frequency Adjustment Necessary
D
Integral Stereo/Monaural Switch 75mA Lamp Driving Capability
D
Wide Dynamic Range: 0.5 to 2.8V
(pp)
Composite Input Signal
D
Wide Supply Range: 8V to 14V
D
Excellent Channel Separation Maintained Over Entire Audio Frequency Range
D
Low Distortion: Typically 0.3% THD at 560mV (RMS) Composite Input Signal
D
Excellent SCA Rejection
Absolute Maximum Ratings: (T
A
= +25
unless otherwise specified)
Power Supply Voltage
14V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lamp Current
75mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (Package Limitation)
625mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above T
A
= +25
C
5.0mW/
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
A
40
to +85
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
65
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics:
(V
CC
= +12V, T
A
= +25
C, V
in
= 560mV
RMS
(2.8V
(PP)
), f
m
= 1kHz
(L or R only), Pilot Level = 100mV
(RMS)
(10%), unless otherwise specified)
Parameter
Test Conditions
Min
Typ
Max
Unit
Maximum Standard Composite Input Signal
THD = 0.5%
2.8
V
PP
Maximum Monaural Input Signal
THD = 1.0%
2.8
V
PP
Input Impedance
Pin2
20
50
k
Stereo Channel Separation
30
40
dB
Audio Output Voltage
Desired Channel
485
mV
rms
Monaural Channel Balance
Pilot Level = 0V
1.5
dB
Total Harmonic Distortion
< 0.3
%
Ultrasonic Frequency Rejection
19kHz
34.4
dB
38kHz
45
dB
SCA Rejection
67kHz, No Modulation, Measured 9kHz Beat
75
dB
Stereo Switch Level
Pilot Only, Lamp ON
18
23
mV
rms
Pilot Only, Lamp OFF
5.0
10
mV
rms
Capture Range
Permissible Tuning Error
3.5
%
Supply Current
Lamp OFF
13
mA
Pin Connection Diagram
19kHz Loop Filter
1
2
3
4
Input
Audio Amp Output
Left Ch Output
5
Right Ch Output
6
Lamp Indicator
7
GND
14
13
12
11
OSC RC Network
19kHz Loop Filter
Demodulator Input
10
19kHz Output
9
Stereo Switch Filter
8
Stereo Switch Filter
V
CC
.600 (15.24)
1
7
14
8
.300
(7.62)
.200 (5.08)
Max
.100 (2.45)
.099 (2.5) Min
.785 (19.95)
Max
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