AN5278 参数 Datasheet PDF下载

AN5278

s

Technical Information (continued)

2.Application Note (continued)

ICs for Audio Common Use

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.

Condition : V

CC

=

18 V, C

RF

=

100

µF,

C

NF

=

10

µF,

C

VCC

=

1000

µF.

V

CC

Pin9

3.2 V

2.4 V

V

RF

Pin5

3.6 V

3.6 V

2.8 V

Output

Pin8

310 ms

Internal line

mute pulse

660 ms

Line out

590 ms

100 ms

8