la4534m Sanyo Semiconductor Corporation, la4534m Datasheet - Page 8

• Manufacturer Part Number: la4534m
• Description: 3v Stereo Headphones In Low-noise Applications Cd
• Manufacturer: Sanyo Semiconductor Corporation

Application Notes
• Poping noise reduction
To minimize poping noise, the PWR mute switch should be turned on t1 (about 0.1s) after power-on and turned off t2
(about. 0.1s) before power-off. Turn on and off the PWR mute switch by applying V
The switching sequence shown below can minimize poping noise.
M.SW OFF
M.SW ON
M.SW DC waveform
Output AC waveform, V IN =0
PWR, Mute SW
PWR.SW
M.SW OFF
Output AC waveform, V IN =0
M.SW ON
V CC
M.SW DC waveform
t 1
t 3
LA4534M
t 2
A11154
M.SW DC waveform
CC
M.SW OFF
M.SW ON
with the PWR be is no state.
Output AC waveform
M.SW DC waveform
Output AC waveform
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