TB2922HQ View Datasheet(PDF) - Toshiba
Part Name
Description
Manufacturer
TB2922HQ Datasheet PDF : 15 Pages
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TB2922HQ
4. Pop Noise Suppression
The pop noise which is generated when the muting function is turned ON/OFF will vary according to the
time constant of C4.
The greater the capacitance, the lower the pop noise. Note that the time from when the mute control
signal is applied to C4 to when the muting function is turned ON/OFF will be longer.
5. External Component Constants
Component Recommended
Name
Value
Purpose
Effect
Lower than recommended
value
Higher than recommended
value
C1
0.22 μF
To eliminate DC
Cut-off frequency is
increased
Cut-off frequency is reduced
C2
10 μF
To reduce ripple
Powering ON/OFF is faster
Powering ON/OFF takes
longer
To provide
C3
0.1 μF
sufficient
Reduces noise and provides sufficient oscillation margin
oscillation margin
C4
1 μF
To reduce pop
noise
High pop noise. Duration until Low pop noise. Duration until
muting function is turned
muting function is turned
ON/OFF is short
ON/OFF is long
C5
3900 μF Ripple filter
Power supply ripple filtering
5
2007-02-20
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