參數(shù)資料
型號(hào)： TDA7340G013TR
廠商： STMICROELECTRONICS
元件分類： 音頻控制
英文描述： 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP44
封裝： 10 X 10 MM, PLASTIC, QFP-44
文件頁(yè)數(shù)： 8/28頁(yè)
文件大?。?/td> 376K
代理商： TDA7340G013TR
VOLUME
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0.31dB FINE ATTENUATION STEPS
00
0
1
-0.31dB
1
0
-0.62dB
1
-0.94dB
1.25dB COARSE ATTENUATION STEPS
000
0dB
0
1
-1.25dB
010
-2.5dB
0
1
-3.75dB
100
-5dB
1
0
1
-6.25dB
110
-7.5dB
1
-8.75dB
10dB GAIN ATTENUATION STEPS
0
20dB
0
1
10dB
010
0dB
0
1
-10dB
1
0
-20dB
1
0
1
-30dB
1
0
-40dB
1
-50dB
For example to select -47.81dB Volume the Data Byte is: 11011001
STATUS AFTER POWER ON RESET
VOLUME
-59.69dB
BASS, TREBLE
Treble = +2dB, Bass = 0dB, symmetrical
SPKRS LF, RF, LR, RR
-37.5dB
LOUDNESS
OFF, -17.5dB
INPUT
No input selected, GAIN = 0dB, DIFF CD GAIN = -06dB, FULLY DIFF MODE
STEREODEC
OFF, FORCED MONO, 6dB GAIN, PILOT THRESHOLD LOW, NOISE BLANKER =11
MUTE
DIRECTLY MUTED, SOFT OFF, ZEROCROSS RESET, WINDOW THRESHOLD =11
NOISE BLANKER
NTB = 11, NAT = 11, OVD = OFF, FSC OFF, BLEND MODE OFF, INTERNAL MPX
PATH ENABLED
DESCRIPTION OF THE NOISE BLANKER
In the normal automotive environment the MPX
signal is disturbed by ignition spikes, motors and
high frequency switches etc.
The aim of the noise blanker part is to cancel the
influence of the spikes produced by these compo-
nents. Therefore the output of the stereodecoder
is switched off for a time of 40
s (average spike
duration).
In a first stage the spikes must be detected but to
avoid a wrong triggering on high frequency noise
a complex trigger control is implemented.
Behind the trigger stage a pulse former generates
the 40
s "blanking" pulse.
In the following section all of these circuits are de-
scribed in their function and their programming,
too (see fig.4).
TDA7340G
16/27
相關(guān)PDF資料
PDF描述
TDA7340S 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP42
TDA7340C 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQCC44
TDA7340P 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP44
TDA7342 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP32
TDA7344S 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP42
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7340P 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AUDIO SIGNAL PROCESSOR
TDA7340S 功能描述:音頻 DSP Audio Signal Proc 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
TDA7342 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digitally controlled audio processor
TDA7342_06 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digitally controlled audio processor
TDA7342EQ2N 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digitally controlled audio processor
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