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HA12192F Fiches technique(PDF) 15 Page - Hitachi Semiconductor |
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HA12192F Fiches technique(HTML) 15 Page - Hitachi Semiconductor |
15 / 89 page HA12192F/HA12197F/HA12212F Series Rev.5, Jun. 1999, page 15 of 89 Music Sensor Time Constant (1) Sensing no signal to signal (Attack) is determined by C6. 0.01 µF to 1µF capacitor C6 can be applicable. Sensing no signal to signal = C6 × 45000 (sec) (2) Sensing signal to no signal (Recovery) is determined by C6 and R11, however preceding (1), 100k Ω to 1M Ω R11 can be applicable. Sensing signal to no signal = C6 × R11 (sec) Music Sensor Output (MSOUT) As for the internal circuit of music sensor block, music sensor output pin is connected to the collector of NPN type directly, therefore, output level will be “high” when sensing no signal. And output level will be “low” when sensing signal. Connection with microcomputer, design I L at 1mA Typ. I L = DVCC – MSOUTLo * R L *MSOUT Lo: Sensing signal (about 1V) Note: Supply voltage of MSOUT pin must be less than V CC voltage. The Tolerances of External Components for Dolby NR-Block (Only HA12192F Series) For adequate Dolby NR tracking response, take external components shown below. BIAS DET(R) DET(L) C10 0.1 µF ±10% C4 0.1 µF ±10% R8 18k Ω ±2% HA12192F series 16 65 Figure 6 Tolerance of External Components |
Numéro de pièce similaire - HA12192F |
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Description similaire - HA12192F |
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