ha13150a Renesas Electronics Corporation., ha13150a Datasheet - Page 8

• Manufacturer Part Number: ha13150a
• Description: 21 W X 4-channel Btl Power Ic
• Manufacturer: Renesas Electronics Corporation.

HA13150A
2. How to reduce the popping noise by Muting circuit
Table 1
C (µF)
nothing
0.47
4.7
8
At normal operating circuit, Muting circuit operates at high speed under 1 µs.
In case popping noise becomes a problem, it is possible to reduce the popping noise by connecting
capacitor, which determines the switching time constant, between pin 10 and GND. (Following
figure 2)
We recommend value of capacitor greater then 1 µF.
Also transitional popping noise can be reduced sharply by muting before V
ON/OFF.
Muting ON/OFF Time
Figure 2 How to use Muting Circuit
ON Time
under 1 µs
2 ms
19 ms
OFF Time
under 1 µs
2 ms
19 ms
CC
and Standby are