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參數(shù)資料
| 型號： | TDA7388A |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 27 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM27 |
| 封裝： | ROHS COMPLIANT, FLEXIWATT-27 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 189K |
| 代理商： | TDA7388A |
Application hints
TDA7388A
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 10F.
3.2
Input stage
The TDA7388A’s inputs are ground-compatible and can stand very high input signals (±
8Vpk) without any performances degradation.
If the standard value for the input capacitors (0.1F) is adopted, the low frequency cut-off
will amount to 16 Hz.
3.3
Standby and muting
Standby and muting facilities are both 3.3V 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 stand-by 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 10A normally flows out of pin 23, the maximum allowable
muting-series resistance (R2) is 70KΩ, which is sufficiently high to permit a muting capacitor
reasonably small (about 1F).
If R2 is higher than recommended, the involved risk will be that the voltage at pin 23 may rise
to above the 1.5V threshold voltage and the device will consequently fail 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 2.5V/ms.
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| 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 |
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| TDA7391 | 功能描述:音頻放大器 35W Bridge 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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