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參數(shù)資料
| 型號： | TDA749313TR |
| 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)： | 11/30頁 |
| 文件大?。?/td> | 863K |
| 代理商： | TDA749313TR |
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TDA7493
Application information
Doc ID 14570 Rev 5
19/30
The disadvantages of the anti-pop configuration are given below:
The input impedance or the load of audio source is no longer 2 * Rin as in the case of
differential input configuration but R0. It means the load effect should be considered
during the application design. At this point, bigger R0 is better because of the lower
load effect.
The input signal is also equivalent to
Vin_actual = Vin * 2 * Rin * (Rin + Rfb + R0) / (2 * Rin * (Rin + Rfb + R0) + Rfb * R0), not
the original Vin which means the actual gain is reduced.
When Rin = 30 k
, Rfb = 30 k and R0 = 20 k, the gain is reduced by 1 dB.
When Rin = 30 k
, Rfb = 120 k and R0 = 20 k, the gain is reduced by 1.84 dB. In
this case, smaller R0 is better.
If the pop noise is not critical, the anti-pop configuration can be simplified as shown in
Figure 14. The suggested value of the resistor R0 is 20 k
.
Figure 14.
Simple anti-pop configuration for single-ended input application
GND
Cin
TDA7493
Input stage
-
+
Au
dio
S
our
ce
OUTP
INP
INN
Rin
Rfb
R0
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PDF描述 |
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| TDA7493 | 3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TDA7494 | 1 CHANNEL(S), VOLUME CONTROL CIRCUIT, ZFM15 |
| TDA7495 | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PZFM15 |
| TDA7496SA | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PZFM15 |
| TDA7496SSA | 5.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7494 | 功能描述:音頻放大器 10W DC Amp w/Vol Cnt 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7494S | 功能描述:音頻放大器 Video switch chip 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7494SA | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5W+5W AMPLIFIER WITH DC VOLUME CONTROL |
| TDA7495 | 功能描述:音頻放大器 11W DC Amp w/Vol Cnt 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7495S | 功能描述:音頻放大器 11W/11W 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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