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参数资料
| 型号： | TDA7419 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| 封装： | SO-28 |
| 文件页数： | 18/40页 |
| 文件大小： | 698K |
| 代理商： | TDA7419 |
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TDA7419
Description of the audio processor
4.9
Subwoofer filter
The subwoofer lowpass filter has butterworth characteristics with programmable cut-off
frequency (80/120/160 Hz)
Figure 18.
Subwoofer control
4.10
Spectrum analyzer
A fully integrated seven-band spectrum analyzer with programmable quality factor is
present. The spectrum analyzer consists of seven band pass filters with rectifier and sample
capacitor that stores the maximum peak signal level since the last read cycle. This peak
signal level can be read by a microprocessor at the SAout pin. To allow easy interfacing to
an analog port of the microprocessor, the output voltage at this pin is referred to device
ground.
The microprocessor starts a read cycle with the negative going clock edge at the SAclk
input. On the following positive clock edges, the peak signal level for the band pass filters is
subsequently switched to SAout. Each analog output data is valid after the time tSadel. A
reset of the sample capacitors is induced whenever SAclk remains high for the time tintres.
Note that a proper reset requires the clock signal SAclk to be held at high potential. Figure
20 shows the block diagram and figure 21 illustrates the read cycle timing of the spectrum
analyzer.
Figure 19.
Spectrum analyzer block diagram
相关PDF资料 |
PDF描述 |
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| TDA7420 | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TDA7421N | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| TDA7421 | AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| TDA7427AAD1 | PLL FREQUENCY SYNTHESIZER, 200 MHz, PDSO28 |
| TDA7427AD | PLL FREQUENCY SYNTHESIZER, 200 MHz, PDSO28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7419TR | 功能描述:音频放大器 5 Band Car Audio Processor 8-10V 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 |
| TDA7420 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:MULTIFUNCTIONAUDIO PROCESSOR |
| TDA7421 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS |
| TDA7421N | 制造商:ST 功能描述:AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS |
| TDA7427 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
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