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参数资料
| 型号： | TDA7461ND |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封装： | SOP-28 |
| 文件页数： | 7/48页 |
| 文件大小： | 437K |
| 代理商： | TDA7461ND |
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TDA7461
Description of the audio processor part
The TDA7461 can be configured with an additional input; if the AC coupling before the
speaker stage is not used (bit 7 in subaddress 5 set to "1") ACINL and ACINR pins can be
used as an additional stereo input.
Figure 4.
Input stages
3.1.3
AutoZero
In order to reduce the number of pins there is no AC coupling between the In-Gain and the
following stage, so that any offset generated by or before the In-Gain stage would be
transferred or even amplified to the output. To avoid that effect a special offset cancellation
stage called AutoZero is implemented.
To avoid audible clicks the audioprocessor is muted before the loudness stage during this
time. In some cases, for example if the
μP is executing a refresh cycle of the I2C bus
programming, it is not useful to start a new AutoZero action because no new source is
selected and an undesired mute would appear at the outputs. For such applications the
TDA7461 could be switched in the "Auto Zero Remain" mode (Bit 6 of the subaddress byte).
If this bit is set to high, the DATABYTE 0 could be loaded without invoking the AutoZero and
the old adjustment value remains.
3.2
Mux output
The MUX_L and MUX_R outputs can provide selectively the output of the input multiplexer
(Speaker RF register, Byte 8, bit 6=1) or the output of the stereo decoder (Speaker RF
register Byte 8 bit 6=0).
If bit D3 byte 10 (Stdec Register) is set to 1, then the stdec signal is automatically muted,
when another source is selected at the input multiplexer.
15K
100K
CD
CDGND
15K
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+
15K
PHONE
PH_GND
15K
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+
D97AU633A
100K
STEREODECODER
IN GAIN
CASSETTE
AM
MPX
相关PDF资料 |
PDF描述 |
|---|---|
| TDA7461NDTR | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| TDA7461N | SPECIALTY CONSUMER CIRCUIT, PDIP28 |
| TDA7462D | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| TDA7463AD | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO20 |
| TDA7463A | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7461NDTR | 功能描述:音频 DSP CAR RADIO SIGNAL 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 |
| TDA7462 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:DUAL AUDIOPROCESSOR WITH COMPANDER AND SUBWOOFER OUTPUT |
| TDA7462D | 功能描述:音频 DSP Dual Audioprocessor 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 |
| TDA7462D013TR | 功能描述:音频 DSP DUAL AUDIOPROCESSOR COMPANDER /SUBWOOFER 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 |
| TDA7463A | 功能描述:多媒体杂项 Lo Vltg TONE CONTROL RoHS:否 制造商:Texas Instruments 类型: 通道数量: 转换速率:540 Mbps 分辨率: 封装 / 箱体:SOIC-16 封装:Tube |
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