fault 管脚——如何防止功放POP声(4)

NTP系列,fault 管脚的作用

NeoFidelity, Inc.

Design Guide

NTP8XXX-001-R02

1. GENERAL DESCRIPTION

This document is made to help circuit design for NTP8XXX series, especially with respect to /FAULT pin.

2. APPLICATION CIRCUIT FOR /FAULT PIN

2.1 Function of /FAULT pin

other words, when /FAULT is low, the OUT1A, OUT1B, OUT2A, and OUT2B – become off and go into This function is useful when unexpected drop or discontinuity of which causes pop sound at the output of speakers.

pop noise when the a pin can be connected to VDD_IO (usually 3.3V) or left pulled up, so it is weakly tied to VDD_IO.

2.2 detector is around 2.9V.