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參數(shù)資料
| 型號： | TDA7350A |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 11 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM11 |
| 文件頁數(shù)： | 8/23頁 |
| 文件大小： | 494K |
| 代理商： | TDA7350A |
TDA7350A
16/23
5
Application Hints
This section explains briefly how to get the best
from the TDA7350A and presents some applica-
tion circuits with suggestions for the value of the
components.These values can change depending
on the characteristics that the designer of the car
radio wants to obtain,or other parts of the car radio
that are connected to the audio block.
To optimize the performance of the audio part it is
useful (or indispensable) to analyze also the parts
outside this block that can have an interconnection
with the amplifier.
This method can provide components and system
cost saving.
5.1 Reducing Turn On-Off Pop
The TDA7350A has been designed in a way that
the turn on(off) transients are controlled through
the charge(discharge) of the Csvr capacitor.
As a result of it, the turn on(off) transient spectrum
contents is limited only to the subsonic range.The
following section gives some brief notes to get the
best from this design feature(it will refer mainly to
the stereo application which appears to be in most
cases the more critical from the pop viewpoint.The
bridge connection in fact,due to the common mode
waveform at the outputs,does not give pop effect).
5.2 TURN-ON
Fig. 42 shows the output waveform (before and af-
ter the "A" weighting filter) compared to the value
of Csvr.
Better pop-on performance is obtained with higher
Csvr values (the recommended range is from 22
F
to 220
F).
The turn-on delay (during which the amplifier is in
mute condition) is a function essentially of : Cout,
Csvr. Being:
T1
≈ 120 Cout
T2
≈ 1200 Csvr
The turn-on delay is given by:
T1+T2 STEREO
T2 BRIDGE
The best performance is obtained by driving the st-
by pin with a ramp having a slope slower than 2V/
ms.
Figure 42.
a) Csvr = 22 F
b) Csvr = 47 F
c) Csvr = 100 F
5.3 TURN-OFF
A turn-off pop can occur if the st-by pin goes low
with a short time constant (this can occur if other
car radio sections, preamplifiers,radio.. are sup-
plied through the same st-by switch).
This pop is due to the fast switch-off of the internal
current generator of the amplifier.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA7350 | 22 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM11 |
| TDA7370BV | 6.5 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| TDA7370B | 6.5 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| TDA7370 | 6.5 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| TDA7375AH | 43 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7350A_05 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:22W BRIDGE-STEREO AMPLIFIER FOR CAR RADIO |
| TDA7360 | 功能描述:音頻放大器 22W Stereo 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7360HS | 功能描述:音頻放大器 18V Op 28V DC 36W 50V Supply 5A Output 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7361 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW VOLTAGE NBFM IF SYSTEM |
| TDA7365 | 功能描述:音頻放大器 2X7W 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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