NTE1631

NTE1631 Integrated Circuit FM Stereo Multiplexer w/ Soft Muting Features: D Compact Package D Channel separation as well as high−frequency cutting can be controlled by means of control inputs D A control input us used to force monaural operation and inhibit oscillations when the applied voltage is low (VCC = 0V) D For a fixed−input waveform phase shift (sub−signal reduced 20%) channel seperation is set to maximum using an internal resistance. D Setting the AM switching input to high forces monaural operation, inhibits oscillations, and cancels the high−cut function. D Setting the forced monaural input to high forces monaural operation and inhibits oscillations D Precautions have been taken to eliminate abnormal operation as well as pop noise occuring with power supply and mode switching functions D Indepent high−impedance demodulating and PLL inputs have been provided to enable either directly connected or independent operation D Wide dynamic range D +3dB input/output gain D Low distortion (0.1%) D Wide supply voltage range (6V to 12V) Applications: D Car Stereo D Music Center D Stereo adio Cassette Tape Recorder D Other Stereo Equipment Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −25 to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55 to +125°C Electrical Characteristics: (TA = +25°C, VCC = 9V unless otherwise specified) Parameter Power Supply Voltage Quiescent Current Channel Separation Total Harmonic Distortion Input Voltage Voltage Gain Pilot On Level Input Impedance Symbol VCC IQ Sep THD VIN GV PIN ZIN Test Conditions Min Typ Max 6 − 30 9 11 40 0.1 − 3 8 40 12 − − 0.9 − − 14 − Unit V mA dB % Vp−p dB mVrms 200mVrms MAIN THD = 2% − 2 − − − kΩ Pin Connection Diagram 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 PLL Filter OSC Time Constant PLL Filter Lamp Filter fO Check AM Switching Lamp Filter Lamp Output GND Forced Monaural Rt Output Control Input Lt Output VCC Time Constant PLL Input Input .768 (19.5) .079 (2.0) .039 (1.0) R .110 (2.79) .228 (5.8) .390 (9.9) .012 (0.30) .022 (0.56) .750 (19.05) 7 9 11 .108 (2.7) 13 15 .050 (1.27) 1 3 5 2 4 6 8 10 12 14 16