NTE1484 Datasheet, PDF (1/3 Pages) NTE Electronics – Integrated Circuit Phase Lock Loop (PLL) Stereo Demod

NTE1484
Integrated Circuit
Phase Lock Loop (PLL) Stereo Demod
Features:
D High−Quality FM Stereo Demodulator using PLL Technique for Separating L and R Signals from
Composite Signal
D Less Peripheral Components; No Coils
D Total System − Including Stereo Demodulator, Automatic Stereo−Monaural Switching Circuit, and
Stereo Indicator Lamp Driver
D Separation Controllable, Plus Very High Separation (Sep; 55dB Typ. at f = 1kHz)
D Low Total Harmonic Distortion during Stereo and Monaural Operation by using New Circuit (Mono;
0.05%, Stereo; 0.1% at f = 1kHz, V_in = 200mV)
D Fully Synchronized Stereo Indicator Lamp
D High−Output Voltage Level (V_out = 1.2V at V_in = 200mV)
D Low Total Harmonic Distortion at High Frequency;
(Main; 0.4%, L or R; 0.15%, Sub; 0.3% at f = 10kHz)
D Low Shock Noise during Stereo−Monarual Switching
Absolute Maximum Ratings: (T_A = +25°C unless otherwise specified)
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Lamp Current, I_L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75mA
Power Dissipation (T_A = +70°C), P_T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 490mW
Operating Temperature Range, T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C
Electrical Characteristics: (V_CC = 12V, f = 1kHz, T_A = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Input Impedance
Z_in
− 75 − kΩ
Channel Separation
Sep P = 20mV,
f = 100Hz − 42 − dB
L + R = 180mV,
VCO freq = 76kHz
f = 1kHz
40
55
−
dB
f = 10kHz − 42 − dB
Stereo Total Harmonic Distortion
ST THD
P = 20mV,
L + R = 180mV,
(L + R = 45%,
L − R = 45%,
P = 10%)
f = 100Hz − 0.1 − %
f = 10kHz − 0.1 0.3 %
f = 10kHz − 0.15 − %