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参数资料
| 型号： | TDA7460NDTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 封装： | ROHS COMPLIANT, SOP-20 |
| 文件页数： | 10/49页 |
| 文件大小： | 473K |
| 代理商： | TDA7460NDTR |
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Description of the audio processor part
TDA7460ND
4.2.2
Soft mute
The digitally controlled soft mute stage allows muting/demuting the signal with a I2C bus
programmable slope. The mute process can either be activated by the soft mute pin or by
the I2C bus. The slope is realized in a special S shaped curve to mute slow in the critical
regions (see Figure 8.).
For timing purposes the Bit 3 of the I2C bus output register is set to 1 from the start of
muting until the end of demuting.
Figure 8.
Soft mute timing
1.
Please notice that a started Mute action is always terminated and could not be interrupted by a change of
the mute signal.
4.2.3
Soft step volume
When volume level is changed often an audible click appears at the output. The root cause
of those clicks could be either a DC offset before the volume stage or the sudden change of
the envelope of the audio signal. With the Soft step feature both kinds of clicks could be
reduced to a minimum and are no more audible (see Figure 9.).
Figure 9.
Soft step timing
2.
For steps more than 1 dB the soft step mode should be deactivated because it could generate a 1 dB error
during the blend-time
1
EXT.
MUTE
+SIGNAL
REF
-SIGNAL
1
I
2C BUS
OUT
Time
D97AU634
2dB
1dB
-1dB
-2dB
Time
D97AU635
VOUT
10ms
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| TDA7461ND | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| TDA7461NDTR | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| TDA7461N | SPECIALTY CONSUMER CIRCUIT, PDIP28 |
| TDA7462D | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
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相关代理商/技术参数 |
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| TDA7461 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:CAR RADIO SIGNAL PROCESSOR |
| TDA7461D | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:CAR RADIO SIGNAL PROCESSOR |
| TDA7461N | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:CAR RADIO SIGNAL PROCESSOR |
| TDA7461N_03 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:CAR RADIO SIGNAL PROCESSOR |
| TDA7461ND | 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 |
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