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参数资料
| 型号： | TA8275HQ |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封装： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件页数： | 11/16页 |
| 文件大小： | 321K |
| 代理商： | TA8275HQ |
TA8275HQ
2006-04-28
4
3.
Muting Function (pin 22)
By means of controlling pin 22 less than 0.5 V, it can make the audio muting condition.
The muting time constant is decided by R1 and C4 and these parts is related the pop noise at power
ON/OFF.
The series resistance; R1 must be set up less than 10 k
to get enough muting attenuation.
The muting function have to be controlled by a transistor, FET and
-COM port which has IMUTE > 250 A
ability.
Pin 22 terminal voltage has the temperature characteristics of 4.6 V (low temperature) to 3.2 V (high
temperature).
Therefore, it is need to design with attention as using the microcontroller of which operating voltage is less
than 5 V.
Terminal 22 may not be pulled up and shall be controlled by OPEN/LOW.
When it is obliged to do, it must be pulled up via diode, because it has to defend flowing reverse current to
internal circuit of pin 22.
– Conventional Method –
VCC
Large current capacity switch
BATTERY
VCC
FROM
MICROCOMPUTER
BATTERY
RELAY
VCC
Small current capacity switch
BATTERY
Stand-By
VCC
DIRECTLY FROM
MICROCOMPUTER
BATTERY
Stand-By
– Stand-by Switch Method –
Figure 3
Figure 5
Mute Attenuation
VMUTE (V)
Point A voltage: VMUTE (V)
ATT – VMUTE
Mut
e
a
tte
nu
ati
o
n
AT
T
(d
B
)
10 k
5 k
VCC = 13.2 V
Po = 10 W
PL
= 4
f
= 1 kHz
BW
= 400~30 kHz
100
0
0.4
0.8 1 1.2
1.6
2
2.4
2.8 3
80
60
40
20
0
20
Figure 4
Muting Function
R1
I (100
A)
22
IMUTE
IMUTE (OFF)
A
VMUTE
C
4
<Recommended Application>
<Application for pulled up>
R1
I (100
A)
22
IMUTE
IMUTE (OFF)
VMUTE
C
4
相关PDF资料 |
PDF描述 |
|---|---|
| TA8275HQ | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8275H | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8276HQ | 23 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8276HQ | 23 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8276H | 23 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TA8276H | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Max Power 35 W BTL 】 4 ch Audio Power IC |
| TA8276HQ | 功能描述:音频放大器 20W x 4ch Car Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TA8277 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:MAX POWER 43 W BTL x 4 CH AUDIO POWER IC |
| TA8277H | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:MAX POWER 43 W BTL x 4 CH AUDIO POWER IC |
| TA8300F | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:MOTOR DRIVER FOR CAMERA |
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