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| 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 = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Lamp Current, IL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75mA Power Dissipation (TA = +70C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 490mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C Electrical Characteristics: (VCC = 12V, f = 1kHz, TA = +25C unless otherwise specified) Parameter Input Impedance Channel Separation Symbol Zin Sep P = 20mV, L + R = 180mV 180mV, VCO freq = 76kHz f = 100Hz f = 1kHz f = 10kHz f = 100Hz f = 10kHz f = 10kHz Test Conditions Min - - 40 - - - - Typ 75 42 55 42 0.1 0.1 0.15 Max - - - - - 0.3 - Unit k dB dB dB % % % Stereo Total Harmonic Distortion ST THD P = 20mV, L + R = 180mV, 180mV (L + R = 45%, L - R = 45%, 45% P = 10%) Electrical Characteristics (Cont'd): (VCC = 12V, f = 1kHz, TA = +25C unless otherwise specified) Parameter Output Voltage Channel Balance Monaural Total Harmonic Distortion Carrier Lock Symbol Vout CB MONO THD CL Test Conditions Vin = 200mV Vin = 200mV Vin = 200mV P = 20mV, L = R = 180mV, 180mV Note 1 f = 19kHz f = 38kHz Min - -1.5 - - - - 4 - CR S/N IT Vin lamp OFF Monaural THD = 1% Pin12 Voltage for Lamp OFF - - - 17.5 400 0.55 - - - mA mV V P = 14mV - Typ 1.2 - 0.05 30 30 75 7 6 3 Max - +1.5 0.25 - - - 13 - - Unit V dB % dB dB dB mV dB % SCA Rejection Ratio Pilot Level for Lamp ON Stereo Lamp Hysteresis Capture Range Signal-To-Noise Ratio Total Current Drain Maximum Input Signal Threshold Voltage Stereo-Monaural Switching SCA Rej P = 20mA, L + R = 180mV, SCA = 20mV, fSCA = 67kHz L(ON) Note 1. Output terminal of IC Pin Connection Diagram VCC 1 Input 2 0.047F to Pin13 3 Lt Output 4 Rt Output 5 Feedback 6 Feedback 7 GND 8 16 Time Constant 15 LPF 14 LPF 13 0.047F to Pin13 12 Stereo/Mono Switch 11 LPF 10 LPF 9 Stereo Lamp 16 9 .260 (6.6) Max 1 8 .785 (19.9) Max .200 (5.08) Max .245 (6.22) Min .100 (2.54) .700 (17.7) .300 (7.62) |
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