- 您现在的位置：买卖IC网 > PDF目录367929 > PGA2311PG4 Stereo Audio VOLUME CONTROL PDF资料下载
参数资料
| 型号： | PGA2311PG4 |
| 英文描述： | Stereo Audio VOLUME CONTROL |
| 中文描述： | 立体声音频音量控制 |
| 文件页数： | 10/17页 |
| 文件大小： | 653K |
| 代理商： | PGA2311PG4 |
SBOS218A
–
DECEMBER 2001
–
REVISED JUNE 2002
www.ti.com
10
DAISY-CHAINING MULTIPLE PGA2311 DEVICES
In order to reduce the number of control signals re-
quired to support multiple PGA2311 devices on a
printed circuit board, the serial control port supports
daisy-chaining of multiple PGA2311 devices. Figure 4
shows the connection requirements for daisy-chain
operation. This arrangement allows a 3-wire serial in-
terface to control many PGA2311 devices.
As shown in Figure 4, the SDO pin from device #1 is con-
nected to the SDI input of device #2, and is repeated for
additional devices. This in turn forms a large shift regis-
ter, in which gain data may be written for all PGA2311s
connected to the serial bus. The length of the shift regis-
ter is 16
N bits, where N is equal to the number of
PGA2311 devices included in the chain. The CS input
must remain LOW for 16
N SCLK periods, where N is
the number of devices connected in the chain, in order
to allow enough SCLK cycles to load all devices.
ZERO CROSSING DETECTION
The PGA2311 includes a zero crossing detection func-
tion that can provide for noise-free level transitions.
The concept is to change gain settings on a zero cross-
ing of the input signal, thus minimizing audible glitches.
This function is enabled or disabled using the ZCEN in-
put (pin 1). When ZCEN is LOW, zero crossing detec-
tion is disabled. When ZCEN is HIGH, zero crossing
detection will be enabled.
The zero crossing detection takes effect with a change
in gain setting for a corresponding channel. The new
gain setting will not be implemented until either positive
slope zero crossing is detected or a time-out period of
16ms has elapsed. In the case of a time-out, the new
gain setting takes effect with no attempt to minimize
audible artifacts.
Figure 4. Daisy-Chaining Multiple PGA2311 Devices.
相关PDF资料 |
PDF描述 |
|---|---|
| PGA2311UAG4 | Stereo Audio VOLUME CONTROL |
| PGA2311UG4 | Stereo Audio VOLUME CONTROL |
| PGA2320IDWG4 | Stereo Audio Volume Control |
| PGA2500IDBG4 | Digitally Controlled Microphone Preamplifier |
| PGA2500IDBRG4 | Digitally Controlled Microphone Preamplifier |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PGA2311U | 功能描述:音频放大器 5V Stereo Audio Volume Control 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 |
| PGA2311U/1K | 功能描述:音频放大器 5V Stereo Audio Vol Control 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 |
| PGA2311U/1KG4 | 功能描述:音频放大器 5V Stereo Audio Vol Control 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 |
| PGA2311UA | 功能描述:音频放大器 +/-5V St Aud Vol Control 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 |
| PGA2311UA | 制造商:Texas Instruments 功能描述:AUDIO VOLUME CONTROL 2311 SOIC16 制造商:Texas Instruments 功能描述:AUDIO VOLUME CONTROL, 2311, SOIC16 制造商:Texas Instruments 功能描述:AUDIO VOLUME CONTROL, 2311, SOIC16; Audio Control Type:Volume; Supply Voltage Range: 4.75V to 5.25V; Control Interface:Serial, SPI; Audio IC Case Style:SOIC; No. of Pins:16; Operating Temperature Min:-40C; Operating Temperature ;RoHS Compliant: Yes |
发布紧急采购，3分钟左右您将得到回复。