- 您现在的位置：买卖IC网 > PDF目录98196 > TDA7444D (STMICROELECTRONICS) SPECIALTY CONSUMER CIRCUIT, PDSO28 PDF资料下载
参数资料
| 型号： | TDA7444D |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封装： | SO-28 |
| 文件页数： | 4/18页 |
| 文件大小： | 211K |
| 代理商： | TDA7444D |
No matter of which functions have been pre-
viously selected, signals are processed by 3
bands Equaliser.
After the Loudness and Volume Control func-
tions, signals are available to four output chan-
nels.
By default, the input source is analog, the Dolby
ProLogic is enabled, the volume control is set to
0dB, the loudness is off and the equaliser is flat.
TDA7444 application functions (figs. 5-8) are
briefly described, specifying related input/output
signals and I2C registers settings; all of them
read the AUDIO_FREQ register to select the cor-
rect filter coefficients.
ProLogic (fig.5)
Input channels: L, R
Output channels: L, R, C, S
The ProLogic algorithm is a Dolby decoder which
derives four output channels from two input chan-
nels. It monitors the codified signal to detect the
presence of a dominant sound, and intensifies
the cue in this direction, in proportion to the
sound intensity. After the balance and level con-
trol, L and R signals are processed by the Adap-
tive Matrix; outputs L, R, C and S are then trans-
ferred to the master level control (S through a
dedicated filter chain).
Following I
2C registers affect the algorithm be-
haviour:
- MODE sets, through a bit mask, following stand-
ard modes:
PHANTOM_CENTER: the C channel reduced
to half power, is addressed on L and R;
NO-SURROUND: the S channel is muted;
SPLIT_SURROUND: the S channel is reduced
to half power.
- AUTOBALANCE enables or disables (AUTO-
BALANCE_ON/AUTOBALANCE_OFF) the bal-
ance of input channels;
-
PINK_NOISE
enables
or
disables
(PINK_NOISE_ON/PINK_NOISE_OFF)
the
noise generation for calibration;
-
WIDE_SURROUND
disables
or
enables
(WIDE_SURR_ON/WIDE_SURR_OFF)the
S
processing through low pass and modified
Dolby B filters;
IN
ProLogic
ProLogic
VMax
TruSurround
SRS
SRS3Dstereo
SRSmono
Effects
Reverb
Chorus
Delay
Flanger
PROCESS=
SRS_3D
SRS_MONO
PROCESS=
PRO_ONLY
PRO_TRUSURROUND
PRO_VMAX
PROCESS=
REVERBE
DELAY
CHORUS
FLANGER
Audio
Processor
Equalizer
Loudness
Vol. Control
PROCESS=
NO_PROCESS
4
2
4
OUT
D98AU897A
Figure 4. Application flow.
TDA7444 - TDA7444D
12/18
相关PDF资料 |
PDF描述 |
|---|---|
| TDA7445D | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| TDA7445 | SPECIALTY CONSUMER CIRCUIT, PDIP28 |
| TDA7448 | 6 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO20 |
| TDA744813TR | 6 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO20 |
| TDA7449L | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7448 | 功能描述:音频放大器 6 Ch Volume CNTRL 0 to -79dB 1.0dB CNT RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7448_04 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:6 CHANNEL VOLUME CONTROLLER |
| TDA744813TR | 功能描述:音频放大器 6 Ch Volume CNTRL 0 to -79dB 1.0dB CNT RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7448-EVB | 功能描述:音频 IC 开发工具 Eval Brd for TDA7448 RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| TDA7449 | 功能描述:音频 DSP Tone Control Digital RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。