TA8272HQ TOSHIBA Semiconductor CORPORATION, TA8272HQ Datasheet - Page 4

• Manufacturer Part Number: TA8272HQ
• Description: Max Power 43 W Btl ? 4 Ch Audio Power Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

3. Muting Function
ON/OFF.
µA ability.
The muting time constant is decided by R
The series resistance; R
The muting function have to be controlled by a transistor, FET and µ-COM port which has I
Terminal 22 must not be pulled up and it shall be controlled by OPEN/LOW.
I
Figure 4 Muting Function
MUTE (OFF)
I (100 µA)
24
Stand-By
(pin 22)
V
CC
I
1
MUTE
R
must be set up less than 10 kΩ.
Small current capacity switch
1
Large current capacity switch
V
V
MUTE
CC
A
BATTERY
– Stand-by Switch Method –
BATTERY
– Conventional Method –
Figure 3
1
and C
4
Figure 5 Mute Attenuation − V
4
−100
and these parts is related the pop noise at power
DIRECTLY FROM
MICROCOMPUTER
−20
−40
−60
−80
20
0
0
V
Stand-By
CC
0.4
Point A voltage: V MUTE (V)
0.8 1 1.2
RELAY
V
CC
ATT – V
1.6
MUTE
10 kΩ
FROM
MICROCOMPUTER
V CC = 13.2 V
P o = 10 W
R L = 4 Ω
f = 1 kHz
BW = 400 Hz~30 kHz
BATTERY
BATTERY
2
2.4
5 kΩ
2006-04-28
MUTE
2.8 3
MUTE
(V)
> 250