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參數(shù)資料
| 型號： | TDA7449D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO20 |
| 封裝： | SO-20 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大?。?/td> | 198K |
| 代理商： | TDA7449D |
1/19
TDA7449
June 2004
1FEATURES
■
INPUT MULTIPLEXER
– 2 STEREO INPUTS
– SELECTABLE INPUT GAIN FOR OPTIMAL
ADAPTATION TO DIFFERENT SOURCES
■
ONE STEREO OUTPUT
■
TREBLE, AND BASS CONTROL IN 2.0dB
STEPS
■
VOLUME CONTROL IN 1.0dB STEPS
■
TWO SPEAKER ATTENUATORS:
– TWO INDEPENDENT SPEAKER CONTROL
IN 1.0dB STEPS FOR BALANCE FACILITY
– INDEPENDENT MUTE FUNCTION
■
ALL FUNCTION ARE PROGRAMMABLE VIA
SERIAL BUS
2DESCRIPTION
The TDA7449 is a volume tone (bass and treble)
balance (Left/Right) processor for quality audio
applications in TV systems. Selectable input gain
is provided. Control of all the functions is accom-
plished by serial bus.
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
TONE CONTROL
DIGITALLY CONTROLLED AUDIO PROCESSOR
Figure 2. Block Diagram
0/30dB
2dB STEP
MUXOUTL
VOLUME
TREBLE
TREBLE(L)
BASS
MUXOUTR
TREBLE(R)
SPKR ATT
LEFT
LOUT
SCL
SDA
DIG_GND
ROUT
D98AU847A
I
2CBUS DECODER + LATCHES
100K
G
L-IN1
L-IN2
100K
R-IN1
R-IN2
G
INPUT MULTIPLEXER
+ GAIN
BOUT(L)
SPKR ATT
RIGHT
BIN(R) BOUT(R)
SUPPLY
CREF
AGND
VS
BIN(L)
5
8
9
7
6
19
20
18
4
2
3
11
17
12
13
1
10
16
15
14
RB
VREF
REV. 4
Figure 1. Package
Table 1. Order Codes
Part Number
Package
TDA7449
DIP20
TDA7449D
SO20
DIP20
SO20
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7449D13TR | 功能描述:音頻 DSP Audio Tone CTRL 2 Stereo Inputs 1 dB 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 |
| TDA7449L | 功能描述:音頻 DSP Tone Control Digital 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 |
| TDA7449L_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR |
| TDA7450 | 功能描述:音頻放大器 Car Radio Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7451 | 功能描述:音頻放大器 Car Power Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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