- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98196 > TDA7468D (STMICROELECTRONICS) 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 PDF資料下載
參數(shù)資料
| 型號： | TDA7468D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| 封裝： | SO-28 |
| 文件頁數(shù)： | 21/23頁 |
| 文件大?。?/td> | 249K |
| 代理商： | TDA7468D |
7/23
TDA7468
3
APPLICATION SUGGESTIONS
The first and the last stages are volume control blocks. The control range is 0 to -63dB (mute) with 1dB
step resolution for this first one, 0 to 24dB (mute) with 8dB step resolution for the last one.
The very high resolution allows the implementation of systems free from any noisy acoustical effect.
The TDA7468D audioprocessor provides 2 bands tones control.
3.1 Bass, Stages
The Bass cell has an internal resistor Ri = 44K
typical.
Several filter types can be implemented, connecting external components to the Bass IN and OUT pins.
The fig.5 refers to basic T Type Bandpass Filter starting from the filter component values (R1 internal and
R2,C1,C2 external) the centre frequency Fc, the gain Av at max. boost and the filter Q factor are computed
as follows:
Viceversa, once FC, AV, and Ri internal value are fixed, the external components values will be:
3.2 Treble Stage
The treble stage is a high pass filter whose time constant is fixed by an internal resistor (25K
typical) and
an external capacitor connected between treble pins and ground.
3.3 CREF
The suggested 10
F reference capacitor (CREF) value can be reduced to 4.7F if the application requires
faster power ON.
Figure 5.
F
C
1
2
π
R1 R2 C1 C2
-----------------------------------------------------------------
=
A
V
R2 C2
R2 C1
Ri C1
+
R2 C1
R2 C2
+
----------------------------------------------------------------
=
Q
R1 R2 C1 C2
R2 C1
R2 C2
+
--------------------------------------------------
=
C1
A
V
1
–
2
π F
C Ri
Q
------------------------------------------
C2
Q
2
C1
A
V
1
–
Q
2
–
------------------------------
==
R2
A
V
1
–
Q
2
–
2
π C1 F
C
A
V
1
–
() Q
-----------------------------------------------------------------------
=
Ri internal
C2
OUT
IN
C1
R2
D95AU313
相關PDF資料 |
PDF描述 |
|---|---|
| TDA7468D13TR | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| TDA7469A | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO20 |
| TDA7469D | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO16 |
| TDA7469 | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO24 |
| TDA746913TR | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO24 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7468D13TR | 功能描述:多媒體雜項 2 Bands Digitally Controled Audio Proc RoHS:否 制造商:Texas Instruments 類型: 通道數(shù)量: 轉換速率:540 Mbps 分辨率: 封裝 / 箱體:SOIC-16 封裝:Tube |
| TDA7469 | 功能描述:音頻 DSP Lo Vltg ANALOG AUDIO PROCESSOR RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TDA7469_1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW VOLTAGE ANALOG AUDIO PROCESSOR WITH HEADPHONE POWER AMPLIFIER |
| TDA746913TR | 功能描述:音頻 DSP Lo Vltg ANALOG AUDIO PROCESSOR RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TDA7473 | 制造商:STMicroelectronics 功能描述:QUAD BTL DRVR - Rail/Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復。