ta8272h TOSHIBA Semiconductor CORPORATION, ta8272h Datasheet - Page 4

• Manufacturer Part Number: ta8272h
• Manufacturer: TOSHIBA Semiconductor CORPORATION

3. Muting Function
ON/OFF.
mA 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 m-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 mA)
24
Stand-By
(pin 22)
V
CC
I
1
MUTE
R
must be set up less than 10 kW.
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
V
RELAY
CC
ATT – V
1.6
MUTE
10 kW
FROM
MICROCOMPUTER
V CC = 13.2 V
P o = 10 W
R L = 4 W
f = 1 kHz
BW = 400 Hz~30 kHz
BATTERY
BATTERY
2
2.4
5 kW
2002-06-20
MUTE
TA8272H
2.8 3
MUTE
(V)
> 250