3544

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

6 of 10

www.unisonic.com.tw

QW-R107-040,C

CIRCUIT OPERATION

Rising edge timing

OUT

Vcc

B

C

Play period

Rising

period

Descending

period

A

A

and therefore possesses a time constant ,so be careful of the timing).

A: MUTE period(use with MUTE=Low to prevent the popping noise when the power is turned on and off ).

B: MUTE release time(used to prevent the popping noise at the release of MUTE with the external C 2 and R2

C: MUTE start time(also possesses a time constant like the MUTE release time ).