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FDA903U Datasheet(PDF) 32 Page - STMicroelectronics

No. de pieza FDA903U
Descripción Electrónicos  1 x 45 W class D digital input automotive power amplifier with ILoad current monitoring, wide voltage operation range for car audio and telematic
PDF  80 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

FDA903U Datasheet(HTML) 32 Page - STMicroelectronics

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Hardware mute pin
FDA903U
32/80
DS12498 Rev 2
8
Hardware mute pin
The pin "HWMute" (pin 30) acts as mute command for the channel. The device is muted
when this pin is low, while it is in play when this pin is high (low/high threshold in Table 5:
Electrical characteristics).
Inside the device, connected to this pin a pull-up current generator puts the device in play if
left floating. An internal clamp limits the Mute pin voltage. If not used, this pin should remain
floating.
To drive the Mute pin to get a hardware mute an external pull-down open drain is needed.
(See Figure 47), RMute must be < 60 kΩ
Figure 47. HWMute pin schematic



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