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参数资料
| 型号： | TDA7388 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 26 W, 1 CHANNEL, AUDIO AMPLIFIER, PZIP25 |
| 封装： | ROHS COMPLIANT, FLEXIWATT-25 |
| 文件页数： | 10/11页 |
| 文件大小： | 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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| TDA7389A | 28 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM27 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7388A | 功能描述:音频放大器 4 x 42W Quad Bridge Car-Radio Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7388G-J25-B-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:4 X 41W QUAD BRIDGE CAR RADIO AMPLIFIER |
| TDA7388L-J25-B-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:4 X 41W QUAD BRIDGE CAR RADIO AMPLIFIER |
| TDA7389 | 功能描述:音频放大器 5 x 42W Quad Bridge Car-Radio Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7389A | 功能描述:音频放大器 6 x 42W Quad Bridge Car-Radio Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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