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FDA903U bảng dữ liệu(PDF) 32 Page - STMicroelectronics

tên linh kiện FDA903U
Giải thích chi tiết về linh kiện  1 x 45 W class D digital input automotive power amplifier with ILoad current monitoring, wide voltage operation range for car audio and telematic
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FDA903U bảng dữ liệu(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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