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参数资料
| 型号： | PGA4311 |
| 英文描述： | 4 CHANNEL AUDIO VOLUME CONTROL |
| 中文描述： | 4通道音频音量控制 |
| 文件页数： | 11/15页 |
| 文件大小： | 481K |
| 代理商： | PGA4311 |
SBOS230A
–
MARCH 2002
–
REVISED JUNE 2002
APPLICATIONS INFORMATION
This section includes additional information that is per-
tinent to designing the PGA4311 into an end applica-
tion.
www.ti.com
11
MUTE FUNCTION
Muting can be achieved by either hardware or software
control. Hardware muting is accomplished via the
MUTE input, and software muting by loading all zeroes
into the volume control register.
MUTE disconnects the internal buffer amplifiers from
the output pins and terminates the outputs with 10k
resistors to ground. The mute is activated with a zero
crossing detection (independent of the zero cross en-
able status) or an 16ms time-out to eliminate any audi-
ble
“
clicks
”
or
“
pops
”
. MUTE also initiates an internal
offset calibration.
A software mute is implemented by loading all zeroes
into the volume control register. The internal amplifier
is set to unity gain with the amplifier input connected to
AGND.
RECOMMENDED CONNECTION DIAGRAM
Figure 5 depicts the recommended connections for the
PGA4311. Power-supply bypass capacitors should be
placed as close to the PGA4311 package as physically
possible.
PRINTED CIRCUIT BOARD (PCB) LAYOUT GUIDE-
LINES
It is recommended that the ground planes for the digital
and analog sections of the PCB be separate from one
another. The planes should be connected at a single
point. See Figure 6 for the recommended PCB floor
plan for the PGA4311.
Figure 5. Recommended Connection Diagram.
相关PDF资料 |
PDF描述 |
|---|---|
| PGA4311UA | 4 CHANNEL AUDIO VOLUME CONTROL |
| PGA431K | 4 CHANNEL AUDIO VOLUME CONTROL |
| PGA4311K | 4 CHANNEL AUDIO VOLUME CONTROL |
| PGA4311U | 4 CHANNEL AUDIO VOLUME CONTROL |
| PGB400 | ZINC GALVANISING SPRAY |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PGA4311_07 | 制造商:BB 制造商全称:BB 功能描述:4-Channel Audio Volume Control |
| PGA4311EVM | 功能描述:音频 IC 开发工具 PGA4311 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| PGA4311K | 制造商:BB 制造商全称:BB 功能描述:4 CHANNEL AUDIO VOLUME CONTROL |
| PGA4311U | 功能描述:音频放大器 4-Ch +/-5V Audio Vol Cntrl 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 |
| PGA4311U | 制造商:Texas Instruments 功能描述:AUDIO VOLUME CONTROL 4311 SOIC28 |
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