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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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ISD5116SYI Fiches technique(PDF) 33 Page - Nuvoton Technology Corporation |
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ISD5116SYI Fiches technique(HTML) 33 Page - Nuvoton Technology Corporation |
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33 / 90 page  ISD5100 SERIES Publication Release Date: Oct 31, 2008 - 33 - Revision 1.42 6.4.6 Ana Out Description Chip Set ANA OUT+ ANA OUT– *VOL *FILTO *SUM2 3 (AOS2,AOS1,AOS0) *FTHRU 1 (AOPD) *INP *SUM1 (1 Vp -p m a x. from AUX INo r ARRAY) (69 4 mVp-p ma x. fro m microp hone input) INS0 15 14 13 12 11 10 98 76 54 32 10 AIG1 AIG0 AIPD AXG1 AXG0 AXPD AOS2 AOS1 AOS0 AOPD OPS1 OPS0 OPA1 OPA0 VLPD CFG0 6.4.7 Analog Inputs Microphone Inputs The microphone inputs transfer the voice signal to the on-chip AGC preamplifier or directly to the ANA OUT MUX, depending on the selected path. The direct path to the ANA OUT MUX has a gain of 6 dB so a 208 mV p-p signal across the differential microphone inputs would give 416 mV p-p across the ANA OUT pins. The AGC circuit has a range of 45 dB in order to deliver a nominal 694 mV p-p into the storage array from a typical electric microphone output of 2 to 20 mV p-p. The input impedance is typically 10kΩ. The ACAP pin provides the capacitor connection for setting the parameters of the microphone AGC circuit. It should have a 4.7 µF capacitor connected to ground. It cannot be left floating. This is because the capacitor is also used in the playback mode for the AutoMute circuit. This circuit reduces the amount of noise present in the output during quiet pauses. Tying this pin to ground gives maximum gain; to VCCA gives minimum gain for the AGC amplifier but will cancel the AutoMute function. AOS2 AOS1 AOS0 SOURCE 0 0 0 FTHRU 0 0 1 INP 0 1 0 VOL 0 1 1 FILTO 1 0 0 SUM1 1 0 1 SUM2 1 1 0 N/C 1 1 1 N/C AOPD CONDITION 0 Power Up 1 Power Down *DIFFERENTIAL PATH |
Numéro de pièce similaire - ISD5116SYI |
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Description similaire - ISD5116SYI |
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