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參數(shù)資料
| 型號： | TDA7493 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| 封裝： | ROHS COMPLIANT, MO-153ADT, SSOP-24 |
| 文件頁數(shù)： | 3/30頁 |
| 文件大小： | 863K |
| 代理商： | TDA7493 |
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TDA7493
Application information
Doc ID 14570 Rev 5
11/30
5
Application information
5.1
Mode selection
Pin STANDBY selects the operating mode, namely standby or play.
In standby mode, all the circuits are turned off and there is very low leakage current.
In play mode, the amplifiers are powered up.
During the turn on/off sequence, there are four operational states: standby, pre-charge,
mute and play. The pre-charge and mute states are two internal transient states to set up
the normal operating condition and to reduce the speaker pop noise.
Note:
An internal pull-down resistor on pin STANDBY ensures that the default mode is standby.
5.2
Gain setting
The close loop gain is set by pins GAIN0 and GAIN1 as shown below in Table 7. The gain
setting is implemented by changing the feedback resistors of the amplifiers.
Note:
Internal pull-down resistors on pins GAIN0 and GAIN1 ensure that the default gain is 6 dB.
Table 6.
Mode selection
Logic level on pin STANDBY
Mode
0
Standby
1Play
Table 7.
Gain selection
Logic level on pin GAIN0
Logic level on pin GAIN1
Gv (nominal)
006.0 dB
0
1
12.0 dB
1
0
15.6 dB
1
18.0 dB
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| TDA749313TR | 功能描述:音頻放大器 3W and 3Watt Dual BTL Class D Audio RoHS:否 制造商:STMicroelectronics 產品: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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