MC13020

Order this document by MC13020/D MC13020 Motorola C-QUAM® AM Stereo Decoder This circuit is a complete one ship, full feature AM stereo decoding and pilot detection system. It employs full–wave envelope signal detection at all times for the L + R signal, and decodes L – R signals only in the presence of valid stereo transmission. No Adjustments, No Coils Few Peripheral Components True Full–Wave Envelope Detection for L + R PLL Detection for L – R 25 Hz Pilot Presence Required to Receive L – R Pilot Acquisition Time 300 ms for Strong Signals, Time Extended for Noise Conditions to Prevent “Falsing” Internal Level Detector can be used as AGC Source MOTOROLA C–QUAM® AM STEREO DECODER SEMICONDUCTOR TECHNICAL DATA 20 1 P SUFFIX PLASTIC PACKAGE CASE 738 ORDERING INFORMATION Device Operating Temperature Range Package MC13020P TA = – 40 to +85°C Plastic DIP +8.0Vdc Figure 1. Simplified Application 0.0033 0.0033 0.0033 220 IF Input Optional Tuner AGC Source 0.01 + 10µF 0.001 1 l Detector 2 Envelope Detector 3 IF Input 4 Level Detector 5 Error Amplifier 6 VCC Q Detector Phase Detector Osc. Feedback Osc. Input Ground Stereo Lamp Pilot Detector Input 20 19 18 17 51pF 16 47µF + 430 3.3k 0.01 15 14 + 0.47 0.0033 Audio Outputs Auto Monaural 7 Left Output 8 Right Output 100k 9 Forced Monaural Pilot Filter Input Co–Channel Input 220k 13 + 4.7k 56k 0.47 910 12 1.5k + 1.5k 10µF + 2.2µF 10 Lock + 2.2µF AGC’d Q 11 Output 430 + 4.7µF *muRata Ceram...