參數(shù)資料
型號(hào): TDA4350X
廠商: SIEMENS A G
元件分類: 音頻控制
英文描述: Audioprocessor
中文描述: 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
封裝: PLASTIC, DSO-28
文件頁(yè)數(shù): 5/32頁(yè)
文件大?。?/td> 1259K
代理商: TDA4350X
TDA 4350X
Semiconductor Group
5
04.96
2
Circuit Description
2.1
1. The selection of the AF inputs happens in the input switch. There are three
stereo-inputs available. One of the input pairs is equipped with a separate floating
ground connection especially provided for external signal sources. Crosstalk to this
input is suppressed by common mode rejection. An input level control circuitry behind
input switch realizes the adaption of different signal source levels. The circuit offers a
control range from 0 dB to + 25 dB with a stepwidth of 2.5 dB. An
I
2
C Bus controlled
first clipping detector allows a software controlled level adaption.
2. Next stage in signal path is volume control, with common setting for both channels, a
control range of 0 dB to – 78.75 dB and a stepwidth of 1.25 dB. In this stage a
loudness function is realized. A loudness control circuit, in fact a second volume
control circuit with identical structure, is to be set to a higher level as volume control.
The resulting level difference fixes the maximum amplitude response of the loudness
function. The frequency response, only bass boost or combined bass and treble boost
is fixed by external components. Because the volume and loudness control are strictly
independent of each other, the frequency response and threshold of the loudness
function is programmable via software. A switch bit allows to enable the loudness
function easily. Some possible loudness setups:
Signalprocessing
Figure 3
Loudness function starting at max.
vol. then
continuously increasing.
相關(guān)PDF資料
PDF描述
TDA4390-2X Audioprocessor
TDA440 TDA440 Video IF Amplifier
TDA440Q TDA440 Video IF Amplifier
TDA4500 SMALL SIGNAL COMBINATION IC FOR MONOCHROME TV
TDA4600 CONTROL IC FOR LINE ISOLATED FREELY OSCILLATING FLYBACK CONVERTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA4360X 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Dual Conversion AM Receiver
TDA4362 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:The Weatherband IC
TDA4362X 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:The Weatherband IC
TDA4390-2X 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Audioprocessor
TDA440 制造商:NSC 制造商全稱:National Semiconductor 功能描述:TDA440 Video IF Amplifier