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參數(shù)資料
| 型號： | TDA7462D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封裝： | SOP-28 |
| 文件頁數(shù)： | 2/25頁 |
| 文件大?。?/td> | 385K |
| 代理商： | TDA7462D |
SoftMute
The digitally controlled SoftMute stage allows
muting/de-muting the signal with a I
2C bus pro-
grammable slope. The mute process can either
be activated by the SoftMute pin(SM) or by the
I
2C bus. This slope is realized in a special S-
shaped curve to mute slow in the critical regions
(see Figure 6).
For timing purposes the Bit 3 of the I
2C bus out-
put register is set to 1 from the start of muting un-
til the end of de-muting.
SoftStep Volume
When the volume level is changed audible clicks
could appear at the output. The root cause of
those clicks could either be a DC offset before
the volume stage or the sudden change of the
envelope of the audio signal. With the SoftStep
feature both kinds of clicks could be reduced to a
minimum and are no more audible. The blend
time from one step to the next is programmable in
four steps.
-20.0
-15.0
-10.0
-5.0
0.0
10.0
100.0
1.0K
10.0K
Figure 3. 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 4. Loudness Center frequency @ Attn.
= 15dB (second order)
10
100
1,000
Hz
-20
-15
-10
-5
(dB)
D98AU844
Figure 5. Loudness @ Attn. = 15dB, fc = 400Hz
1
EXT.
MUTE
+SIGNAL
REF
-SIGNAL
1
I
2C BUS
OUT
Time
D97AU634
Figure 6. Softmute Timing
2dB
1dB
-1dB
-2dB
Time
D97AU635
VOUT
10ms
Figure 7. Soft Step Timing
Note: Please notice that a started Mute action is always terminated
and could not be interrupted by a change of the mute signal.
Note: For steps more than 1dB the softstep mode should be
deactivated because it could generate a 1dB error during the
blend-time
TDA7462
10/25
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7462D013TR | 功能描述:音頻 DSP DUAL AUDIOPROCESSOR COMPANDER /SUBWOOFER 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 |
| TDA7463A | 功能描述:多媒體雜項(xiàng) Lo Vltg TONE CONTROL RoHS:否 制造商:Texas Instruments 類型: 通道數(shù)量: 轉(zhuǎn)換速率:540 Mbps 分辨率: 封裝 / 箱體:SOIC-16 封裝:Tube |
| TDA7463A_1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW VOLTAGE TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR |
| TDA7463AD | 功能描述:音頻 DSP Lo Vltg TONE CONTROL 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 |
| TDA7463AD_05 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW VOLTAGE TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR |
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