8

AN5278

ICs for Audio Common Use

s Technical Information (continued)

2.Application Note (continued)

5) Internal AC mute pulse (during power ON/OFF)

The start-up response of the AN5278 is designed to be as smooth as possible. During power ON and OFF, the AC

mute circuit turn on momentarily. The input signal and any external noise interference are being mute. The output

DC level follows the rise and fall time of RF pin.

Pin9

3.2 V

2.4 V

2.8 V

3.6 V

3.6 V

100 ms

590 ms

660 ms

310 ms

Pin5

Output

Pin8

Internal line

mute pulse

Line out