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參數(shù)資料
| 型號： | SA575DTB |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | Low Voltage Compandor |
| 中文描述： | DUAL COMPANDER, 0.02 MHz BAND WIDTH, PDSO20 |
| 封裝： | LEAD FREE, TSSOP-20 |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 135K |
| 代理商： | SA575DTB |
SA575
http://onsemi.com
7
Automatic Level Control
The
typical
configuration is shown in Figure 4. It can be seen that it is
quite similar to the compressor schematic except that the
input to the rectifier cell is from the input path and not from
the feedback path. The input is AC coupled through C
12
and C
13
and the output is AC coupled through C
8
. Once
again, as in the previous cases, if the system input and
output signals are already AC coupled, then C
12
, C
13
and
C
8
could be eliminated. Concerning the compressor,
removing R
6
, R
7
and C
7
will cause motor-boating in
Automatic
Level
Control
circuit
absence of signals. C
COMP
is necessary to stabilize the
summing amplifier at higher input levels. This circuit
provides an input dynamic range greater than 60 dB with
the output within
0.5 dB typical. The necessary design
expressions are given by Equation 5 and Equation 6,
respectively.
3.8 k x 100 A
ALC gain =
(eq. 5)
4V
IN
(avg)
(eq. 6)
R
=
A
= 10 k x C
RECT
= 10 k x C
9
2.2 F
10 F
10 F
V
REF
G
1 F
4.7 F
ALC IN
ALC OUT
8
12
13
16
15
11
14
C COMP
22pF
C7
Figure 4. Typical ALC Configuration
10k
3.8k
10k
30k
30k
C
12
C
13
R
6
R
7
C
8
C
9
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA575DTBG | 功能描述:音頻放大器 ANA COMPANDOR 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 |
| SA575DTBR2 | 功能描述:音頻放大器 3-7V Precision Dual 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 |
| SA575DTBR2G | 功能描述:音頻放大器 ANA COMPANDOR 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 |
| SA575N | 功能描述:音頻放大器 3-7V Precision Dual 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 |
| SA575NG | 功能描述:音頻放大器 3-7V Precision Dual Gain Compandor 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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