- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373622 > TDA7403D (意法半導(dǎo)體) BASIC SIGNAL PROCESSOR PDF資料下載
參數(shù)資料
| 型號(hào)： | TDA7403D |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | BASIC SIGNAL PROCESSOR |
| 中文描述： | 基本信號(hào)處理器 |
| 文件頁數(shù)： | 7/26頁 |
| 文件大?。?/td> | 195K |
| 代理商： | TDA7403D |
第1頁第2頁第3頁第4頁第5頁第6頁當(dāng)前第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁
Input stages
The input circuits are the same as in preceeding
ST audioprocessorswith exception of the CD in-
puts (see figure 1).
The typical input impedanceis 100k
.
AutoZero
In order to reduce the number of pins there is no
AC coupling between the In-Gain and the follow-
ing stage, so that any offset generated by or be-
fore the In-Gain stage would be transferred or
even amplifiedto the output.
To avoid that effect a special offset cancellation
stage called AutoZerois implemented.
To avoid audible clicks the audioprocessor is
muted before the loudness stageduring this time.
In some cases, for example if the
μ
P is executing
a refresh cycle of the I
2
C bus programming, it is
not usefulto start a new AutoZeroaction because
no newsource is selectedand an undesiredmute
would appear at the outputs. For such applica-
tions the TDA7403 could be switched in the ”Auto
Zero Remain” mode (Bit 6 of the subaddress
byte). If this bit is set to high, the DATABYTE 0
could be loaded without invoking the AutoZero
and the old adjustmentvalue remains.
MixingStage
This stage offers the possibilityto mix the internal
beep or the phone signal to any other source.
Due to the fact that the mixing stage is also lo-
cated behind the In-Gain stage fine adjustments
of the mainsource level can be done in thisway.
Loudness
There are four parameters programmable in the
loudness stage (seefig.2, 3, 4):
- Attenuation
- Center Frequency
- LoudnessQ
- FlatMode:in thismodethe loudnessstageworks
asa0 -15dBattenuator.
D98AU951
100K
100K
100K
STEREODECODER
IN GAIN
CASSETTE
AM
MPX
Figure 1. Inputstages
-20.0
-15.0
-10.0
-5.0
0.0
10.0
100.0
1.0K
10.0K
Figure 2. Loudness Attenuation @ fc = 400Hz
(second order)
-20.0
-15.0
-10.0
-5.0
0.0
10.0
100.0
1.0K
10.0K
Figure 3. Loudness Center frequency @ Attn.
= 15dB(second order)
DESCRIPTION OF THE AUDIOPROCESSOR
TDA7403
7/26
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA7404 | CARRADIO-SIGNAL-PROCESSOR |
| TDA7404D | CARRADIO-SIGNAL-PROCESSOR |
| TDA7405 | EQUALIZER CARRADIO SIGNAL PROCESSOR |
| TDA7406T | CAR RADIO SIGNAL PROCESSOR |
| TDA7406 | Car radio signal processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7403DTR | 功能描述:音頻 DSP Basic Signal Process RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| TDA7404 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CARRADIO-SIGNAL-PROCESSOR |
| TDA7404_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Car radio signal processor |
| TDA7404D | 功能描述:音頻 DSP Car Radio Signal RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| TDA7404DTR | 功能描述:音頻 DSP Car Radio Signal RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。