NTE1142 Integrated Circuit FM Multiplex Stereo Decoder Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18mA Lamp Driver Current, IL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW Operating Temperature Range (VCC = 12V), Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −10 to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40 to +125°C Electrical Characteristics: (TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Standby Current ICC VCC = 12V − 10 18 mA Input Impedance Zi f = 1.0kHz − 20 − kΩ f = 100kHz (Note 1) − 35 − dB f = 1.0kHz 30 45 − dB f = 10kHz with 15kHz LPF − 30 − dB 38kHz BEF − −1.5 − dB Monoaural Input, f = 1.0kHz − 0.2 2.0 dB Stereo Channel Seperation Voltage Gain Sep AV Channel Balance Ch. B Total Harmonic Distortion THD − 0.5 1.0 % Audio Muting Voltage (Required at Pin 5) Mute On 0.6 0.85 − V Mute Off − 1.08 1.5 V Lamp Indictaor Input Level Lamp ON − 12 22 mVrms Lamp Off − 8.4 − mVrms Stereo − 1.13 1.5 V Mono 0.6 0.82 − V 19kHz (Note 2) − 30 − dB 38kHz (Note 2) − 25 − dB without filter − 55 − dB (Note 3) 45 55 − dB Stereo−Monaural Switching V lt Voltage (Required (R i d att Pin Pi 4) Ultrasonic Frequency Rejection Inherent SCA Rejection Attenuation in Muting Mode SCArej Note 1. Measurement made with 200mVrms Standard Multiplex Composite Signal Containing Left (45%) and Right (45%) audio information with a 10% (19kHz) pilot signal. Modulation frequency is 1.0kHz unless otherwise specified. Note 2. Referenced to 1.0kHz output signal with Standard Multiplex Composite Input Signal. Note 3. Referenced to 1.0kHz output signal with either Standard Multiplex Composite or Monoaural Input Signal. Pin Connection Diagram (Front View) 19kHz Tank 1 14 Filter Network 19kHz Tank 2 13 38kHz Tank Input 3 12 Rt Channel Output Stereo Switch 4 11 Lt Channel Output Mute Switch 5 10 38kHz Tank Lamp Drive 6 9 VCC GND 7 8 N.C. 14 8 1 7 .785 (19.95) Max .300 (7.62) .200 (5.08) Max .100 (2.45) .600 (15.24) .099 (2.5) Min