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| CXA2202M EIAJ Sound Multiplexing Decoder Description The CXA2202M, is a bipolar IC designed as EIAJ TV sound multiplexing decoder, provides various functions including sound multiplexing demodulation, broadcast mode identification (stereo/bilingual discrimination display), mode display, and muting. Features * Adjustment free of filter * High frequency stereo separation improved * An internal active filter greatly reduces the external parts * Use of the countdown method for broadcast mode identification eliminates the necessity of adjusting the identification system (Cue oscillator) * Internal filter eliminates interference from digital facsimile signals * The discrimination time needed to shift from multiplexing sound to monaural sound is reduced. * Output level: 520mVrms (1kHz, monaural, 100%) * Forced monaural mode can be set to operate only for stereo broadcasts or for stereo/bilingual broadcasts. Applications * Color TVs * Hi-Fi VCRs Pin Configuration GND NC REFL Vcc NC MO MODE MPX IN NC CUBI 1 2 3 4 5 6 7 8 9 28 SUBI 27 NC 26 SC OUT 25 SC IN 24 NC 23 MC OUT 22 MC IN 21 L OUT 20 R OUT 19 M OUT 18 FOMO 17 MUTE 16 MODE 15 NC Preliminary 28 pin SOP (Plastic) Structure Bipolar silicon monolithic IC Absolute Maximum Ratings (Ta = 25C) * Supply voltage Vcc 10 V * Input signal (Pin 7) Vis 0.6 Vp-p * Control voltage (Pins 6, 16, 17, 18) Vic Vcc V * Operating temperature Topr -20 to +75 C * Storage temperature Tstg -65 to +150 C * Allowable power dissipation PD 1000 mW * LED drive current ILED 10 mA Operating Supply Voltage Range 8.5 to 9.5 V NC 10 LEDST 11 LEDSU 12 LEDM 13 NC 14 Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. -1- PE02965-PS CXA2202M Block Diagram MC OUT SC OUT M OUT R OUT FOMO MODE L OUT MC IN MUTE SC IN SUBI NC NC 28 27 26 25 24 23 22 21 20 19 18 17 16 15 SUBDEEM MAINDEEM OUTPUT AMP & OUTPUT SW MAIN LR TEST MAIN OUT SUB FM DEMOD MATRIX IIL LOGIC & CONT CUE CARRIER 3.5fH CLOCK 3.5fH VCO 952Hz BPF 952Hz CLOCK SUB DET SUB BPF 4.5fH TRAP CUE BPF BUFFER BIAS CURRENT BIAS VOLTAGE VOLTAGE REGULATOR AM DEMOD COMP LED DRIVE IN AMP IBIAS MPX SIGNAL 7 8 9 10 11 12 13 14 1 2 3 4 5 6 GND NC Vcc NC MPX IN NC CUBI NC LEDSU REFL MO MODE LEDST -2- LEDM NC NC |
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