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参数资料
| 型号： | TLV320AIC32IRHB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封装： | 5 X 5 MM, PLASTIC, QFN-32 |
| 文件页数： | 24/76页 |
| 文件大小： | 1124K |
| 代理商： | TLV320AIC32IRHB |
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AUDIO DAC POWER CONTROL
AUDIO ANALOG INPUTS
GAIN=0,-1.5,-3,..,-12dB,MUTE
LINE1LP/MIC1L
LINE2L/MIC2LP
LINE1R/MIC1RP
LINE3L/MIC3L
LINE3R/MIC3R
GAIN=0,-1.5,-3,..,-12dB,MUTE
TOLEFT ADC
PGA
SLAS479B – AUGUST 2005 – REVISED AUGUST 2006
The stereo DAC can be fully powered up or down, and in addition, the analog circuitry in each DAC channel can
be powered up or down independently. This provides power savings when only a mono playback stream is
needed.
The TLV320AIC32 includes six single-ended audio inputs. These pins connect through series resistors and
switches to the virtual ground terminals of two fully differential opamps (one per ADC/PGA channel). By
selecting to turn on only one set of switches per opamp at a time, the inputs can be effectively muxed to each
ADC PGA channel.
By selecting to turn on multiple sets of switches per opamp at a time, mixing can also be achieved. Mixing of
multiple inputs can easily lead to PGA outputs that exceed the range of the internal opamps, resulting in
saturation and clipping of the mixed output signal. Whenever mixing is being implemented, the user should take
adequate precautions to avoid such a saturation case from occurring. In general, the mixed signal should not
exceed 2 Vp-p (single-ended).
In most mixing applications, there is also a general need to adjust the levels of the individual signals being
mixed. For example, if a soft signal and a large signal are to be mixed and played together, the soft signal
generally should be amplified to a level comparable to the large signal before mixing. In order to accommodate
this need, the TLV320AIC32 includes input level control on each of the individual inputs before they are mixed or
muxed into the ADC PGAs, with gain programmable from 0 dB to –12 dB in 1.5 dB steps. Note that this input
level control is not intended to be a volume control, but instead used occasionally for level setting. Soft-stepping
of the input level control settings is implemented in this device, with the speed and functionality following the
settings used by the ADC PGA for soft-stepping.
Figure 28 shows the single-ended mixing configuration for the left channel ADC PGA, which enables mixing of
the signals LINE1L, LINE2L, LINE1R, MIC3L, and MIC3R. The right channel ADC PGA mix is similar, enabling
mixing of the signals LINE1R, LINE2R, LINE1L, MIC3L, and MIC3R.
Figure 28. Left Channel Single-Ended Analog Input Mixing Configuration
30
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TLV320AIC32IRHBG4 | 制造商:Texas Instruments 功能描述:AUD CODEC 2ADC / 2DAC 32BIT 32QFN EP - Rail/Tube |
| TLV320AIC32IRHBR | 功能描述:接口—CODEC Lo-Pwr Stereo Codec w/6 Inp 6 Otp RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| TLV320AIC32IRHBRG4 | 功能描述:接口—CODEC Lo-Pwr Stereo Codec w/6 Inp 6 Otp RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| TLV320AIC32IRHBT | 功能描述:接口—CODEC Lo-Pwr Stereo Codec w/6 Inp 6 Otp RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| TLV320AIC32IRHBTG4 | 功能描述:接口—CODEC Lo-Pwr Stereo Codec w/6 Inp 6 Otp RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
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