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TDA7297SA Datasheet(PDF) 4 Page - STMicroelectronics |
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TDA7297SA Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 11 page TDA7297SA 4/11 Figure 2. Microprocessor Driving Signals B) Low Cost Application In low cost applications where the µP is not present, the suggested circuit is shown in fig.3. The St-by and mute terminals are tied together and they are connected to the supply line via an external voltage divider. The device is switched-on/off from the supply line and the external capacitor C4 is intended to delay the St-by and mute threshold exceeding, avoiding "Popping" problems. +VS(V) VIN (mV) VST-BY pin 7 Iq (mA) ST-BY MUTE PLAY MUTE ST-BY 1.8 0.8 VMUTE pin 6 4.1 2.3 OFF OFF D96AU259/mod VOUT (V) 2.9 1.3 |
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