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TDA9870A Datasheet(PDF) 4 Page - NXP Semiconductors |
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TDA9870A Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 88 page 1998 Aug 10 4 Philips Semiconductors Product specification Digital TV Sound Processor (DTVSP) TDA9870A 2.1.1 ANALOG 2-CARRIER SYSTEMS Table 1 Frequency modulation Table 2 Identification for A2 systems STANDARD SOUND SYSTEM CARRIER FREQUENCY (MHz) FM DEVIATION (kHz) MODULATION BANDWIDTH/ DE-EMPHASIS (kHz/ µs) NOM. MAX. OVER SC1 SC2 M mono 4.5 15 25 50 mono − 15/75 M A2+ 4.5/4.724 15 25 50 1 ⁄2(L + R) 1⁄2(L − R) 15/75 (Korea) B/G A2 5.5/5.742 27 50 80 1 ⁄2(L + R) R 15/50 I mono 6.0 27 50 80 mono − 15/50 D/K A2 6.5/6.742 27 50 80 1 ⁄2(L + R) R 15/50 D/K A2* 6.5/6.258 27 50 80 1 ⁄2(L + R) R 15/50 PARAMETER A2/A2* A2+ (KOREA) Pilot frequency 54.6875 kHz = 3.5 × line frequency 55.0699 kHz = 3.5 × line frequency Stereo identification frequency Dual identification frequency AM modulation depth 50% 50% 117.5 Hz line frequency 133 --------------------------------------- = 149.9 Hz line frequency 105 --------------------------------------- = 274.1 Hz line frequency 57 --------------------------------------- = 276.0 Hz line frequency 57 --------------------------------------- = |
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