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NTE1484

Integrated Circuit Phase Lock Loop (PLL) Stereo Demod

NTE Electronics 

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, Vin = 200mV)

D Fully Synchronized Stereo Indicator Lamp

D High−Output Voltage Level (Vout = 1.2V at Vin = 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: (TA = +25°C unless otherwise specified)

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V

Lamp Current, IL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75mA

Power Dissipation (TA = +70°C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 490mW

Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C

Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C

Electrical Characteristics: (VCC = 12V, f = 1kHz, TA = +25°C unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Input Impedance

Zin

− 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 − %

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