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| CXA2202N EIAJ Sound Multiplexing Decoder Description The CXA2202N, 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 24 pin SSOP (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, 13, 14, 15) Vic Vcc V * Operating temperature Topr -20 to +75 C * Storage temperature Tstg -65 to +150 C * Allowable power dissipation PD 520 mW * LED drive current ILED 10 mA Operating Supply Voltage Range 8.5 to 9.5 V 1 2 3 4 5 6 7 8 9 24 SUBI 23 NC 22 SC OUT 21 SC IN 20 MC OUT 19 MC IN 18 L OUT 17 R OUT 16 M OUT 15 FOMO 14 MUTE 13 MODE LEDST 10 LEDSU 11 LEDM 12 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- E02964 CXA2202N Block Diagram MC OUT SC OUT M OUT R OUT FOMO 24 23 22 21 20 19 TEST 18 17 16 15 14 13 SUBDEEM MAINDEEM OUTPUT AMP & OUTPUT SW MAIN LR 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 IN AMP BUFFER BIAS CURRENT BIAS VOLTAGE VOLTAGE REGULATOR CUE BPF AM DEMOD COMP LED DRIVE IBIAS MPX SIGNAL 7 MPX IN 1 GND 2 NC 3 REFL 4 Vcc 5 NC 6 MO MODE 8 NC 9 CUBI 10 LEDST 11 LEDSU 12 LEDM -2- MODE L OUT MC IN MUTE SC IN SUBI NC |
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