參數(shù)資料
型號(hào)： Q67001-A5214
廠商： INFINEON TECHNOLOGIES AG
英文描述： Components for Entertainment Electronics, Satellite Sound IF
中文描述： 元件娛樂(lè)電子，衛(wèi)星聲音中頻
文件頁(yè)數(shù)： 11/27頁(yè)
文件大?。?/td> 416K
代理商： Q67001-A5214
Data Sheet
TDA6170X
Semiconductor Group
7
21.7.99
7.6
The demodulated and level controlled audio signals are fed via low-pass filters to the inputs of two identical
expander circuits. The IF3 audio signal is also applied in parallel via different de-emphasis networks to the
input of the audio switch for broadband mono reception. The expander circuits have the reverse characteris-
tics of the audio compressor of the TV station. A 3 bit pre volume control (control byte 3: PVL2...PVL0 and
PVR2...PVR0) for each audio channel enables a correct adjustment of the expander characteristics and
allows the possibility to align to the right level for both broadband and smallband sound IF reception.
Expander Description
7.7
The input signals of the AF switch can be derived from the external audio input pair. However, these signals
can also be derived from either the different de-emphasis networks or from both expanders. The selection of
the output signals from IF1, IF2 or IF3 is done by using the I
2
C-bus interface. The switches are followed by a
volume control section with buffered outputs Ch1 and Ch2.
In case of small-band reception the demodulated signals of IF1 and IF2 are processed in both expanders and
fed to the switches. So it is possible to select one of each or both in the audio switches for both AF outputs
Ch1 and Ch2.
In the case of broad-band audio transmission with 50
μ
s, 75
μ
s or J17 pre-emphasis the IF3 input is active and
with the audio switch the demodulated audio signals are selected after the three de-emphasis networks and
fed to both AF outputs in mono mode.
The 3 bit volume control (control byte 2: VL2...VL0 and VR2...VR0) in front of each AF output enables the
same audio level for different FM deviations of several satellite transponders.
AF Switch and Volume Control
相關(guān)PDF資料
PDF描述
Q67003H9339 ICs for Communications
Q67006-A9171 Dynamic Differential Hall Effect Sensor IC
Q67006-A9515 Step Down Voltage-Regulator with Reset
Q67006-A9286 5-V Voltage Regulator
Q67006-A9395 Low-Drop Voltage Regulator
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
Q67003H9339 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications
Q67006-A5150 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:VHF I / VHF II / UHF-Tuner IC
Q67006-A5152 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:VHF/UHF-Tuner IC
Q67006-A5167 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Video Modulator for FM/AM-Audio with PLL-Output
Q67006-A5179 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Video Modulator for FM/AM-Audio
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*