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參數(shù)資料
| 型號： | TDA7419TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 3 BAND CAR AUDIO PROCESSOR |
| 中文描述： | 3波段車載音頻處理器 |
| 文件頁數(shù)： | 9/30頁 |
| 文件大小： | 804K |
| 代理商： | TDA7419TR |
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TDA7419
5.2
The AutoZero allows a reduction of the number of pins as well as external components by canceling any
offset generated by or before the In-Gain-stage (Please notice that externally generated offsets, e.g. gen-
erated through the leakage current of the coupling capacitors, are not canceled).
The auto-zeroing is started every time the input source is changed and needs max. 0.3ms for the align-
ment. To avoid audible clicks the Audio processor is muted before the loudness stage during this time.
The AutoZero feature is only present in the main signal-path.
AutoZero
5.2.1 AutoZero-Remain
In some cases, for example if the P is executing a refresh cycle of the IIC-Bus-programming, it is not use-
ful to start a new AutoZero-action because no new source is selected and an undesired mute would ap-
pear at the outputs. For such applications, it can be switched in the AutoZero-Remain-Mode (Bit 6 of the
subaddress-byte). If this bit is set to high, the AutoZero will not be invoked and the old adjustment-value
remains.
5.3
There are four parameters programmable in the loudness stage:
Loudness
5.3.1 Attenuation
Figure 5 shows the attenuation as a function of frequency at f
P
= 400Hz
Figure 5. Loudness Attenuation @ f
P
= 400Hz.
-20
-15
-10
-5
0
5
10
100
1K
10K
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA7420 | MULTIFUNCTIONAUDIO PROCESSOR |
| TDA7421N | AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS |
| TDA7421 | AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS |
| TDA7427A | AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD | AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7420 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MULTIFUNCTIONAUDIO PROCESSOR |
| TDA7421 | 制造商:STMICROELECTRONICS 制造商全稱: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 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
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