PA4402 Datasheet, PDF (5/7 Pages) Protek Devices – Click-Pop Suppression Device

ANALOG PRODUCTS DIVISION
PA4402
Click-Pop Suppression Device
A
4
4
0
1
C
l
i
c
k
-
P
o
p
S
u
p
p
Figure 5: Power Down sequence waveforms
r
Channel 1 (yellow waveform) is the fall of the 12V power supply.
e
Channel 2 (blue waveform) is the waveform at the bypass capacitor input plate.
Channel 4 (green waveform) is the waveform at the bypass capacitor output plate without the PA4402.
s
Channel 3 (magenta waveform) is the waveform at the bypass capacitor output plate with the PA4402.
s
i _{In Figure 4, the audible POP noise can be as high as 4.8V (Channel 4) with a negative swing without using the PA4402. When}
the PA4402 is active this negative swing is suppressed to less than 200mV (Channel 3) in this case.
o
n
D
e
v
i
c
e
2929 S Fair Lane, Tempe, AZ, 85282 Tel: [phone]. Fax: [phone]
95026. Rev.2. 02/2012
www.protekdevices.com
NOT FOR USE IN LIFE SUPPORT SYSTEMS