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參數(shù)資料
| 型號： | TDA7388 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 26 W, 1 CHANNEL, AUDIO AMPLIFIER, PZIP25 |
| 封裝： | ROHS COMPLIANT, FLEXIWATT-25 |
| 文件頁數(shù)： | 10/11頁 |
| 文件大?。?/td> | 134K |
| 代理商： | TDA7388 |
Application hints
TDA7388
Doc ID 14256 Rev 2
3
Application hints
Ref. to the circuit of Figure 2.
3.1
SVR
Besides its contribution to the ripple rejection, the SVR capacitor governs the turn ON/OFF
time sequence and, consequently, plays an essential role in the pop optimization during
ON/OFF transients.
To conveniently serve both needs, its minimum recommended value is 10 F.
3.2
Input stage
The TDA7388’s inputs are ground-compatible and can stand very high input signals
(±8 Vpk) without any performances degradation.
If the standard value for the input capacitors (0.1 F) is adopted, the low frequency cut-off
amounts to 16 Hz.
3.3
Standby and muting
Standby and Muting facilities are both 3.3 V CMOS-compatible. If unused, a straight
connection to Vs of their respective pins would be admissible.
Conventional/low-power transistors can be employed to drive muting and standby pins in
absence of true CMOS ports or microprocessors. R-C cells have always to be used in order
to smooth down the transitions for preventing any audible transient noises.
Since a DC current of about 10 A normally flows out of pin 22, the maximum allowable
muting-series resistance (R2) is 70 kΩ, which is sufficiently high to permit a muting capacitor
reasonably small (about 1 F).
If R2 is higher than recommended, the involved risk is that the voltage at pin 22 may rises to
above the 1.5 V threshold voltage and the device consequently fails to turn OFF when the
mute line is brought down.
About the stand-by, the time constant to be assigned in order to obtain a virtually pop-free
transition has to be slower than 2.5 V/ms.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7388A | 功能描述:音頻放大器 4 x 42W Quad Bridge Car-Radio 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 |
| TDA7388G-J25-B-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:4 X 41W QUAD BRIDGE CAR RADIO AMPLIFIER |
| TDA7388L-J25-B-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:4 X 41W QUAD BRIDGE CAR RADIO AMPLIFIER |
| TDA7389 | 功能描述:音頻放大器 5 x 42W Quad Bridge Car-Radio 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 |
| TDA7389A | 功能描述:音頻放大器 6 x 42W Quad Bridge Car-Radio 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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