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參數(shù)資料
| 型號(hào)： | STA5100 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類(lèi)： | 音頻放大器 |
| 英文描述： | 140W MONO BASH POWER AMPLIFIER |
| 中文描述： | 140W的單聲道BASH功放 |
| 文件頁(yè)數(shù)： | 8/14頁(yè) |
| 文件大?。?/td> | 146K |
| 代理商： | STA5100 |
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STA5100
8/14
Gain without compression (G)
Max Attenuation ratio
The following graph gives the representation of the Compressor activation status related to the Vthreshold and
the input voltage. The delimitation line between the two fields, compression or not, is expressed by the formula :
= 5
= 26 dB
Where G is the preamplifier gain without compression.
In the compression region the gain of the preamplifier will be reduced
(G = 2·Vthreshold/Vin) to maintain at steady state the output voltage equal 2*|Vthreshold| .
Instead in the other region the compressor will be off (G = 5).
The delimitation line between the two fields can be related to the output voltage of the preamplifier: in this case
the formula is :
V
out
2
Vthreshold
=
Figure 1. Compressor activation field
The relative attenuation introduced by the variable gain cell is the following :
The total gain of the stage will be:
Gdb = 20log5 + Attenuation
The maximum input swing is related to the value of input resistor, to guarantee that the input current remain
under Iin_Max value (1 mA).
V
in
2
-------------------------------------------
Vthreshold
G
=
1
2
4
6
8
2
3
4
5
G = 5
|Vthreshold|
V
IN
PEAK
COMPRESSION
G < 5
D01AU1264
Attenuation
20
2
5
--
log
V
V
in_peak
---------------------
=
R
i
V
I
in_max
---------------------
>
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| STA510A | 制造商:STMicroelectronics 功能描述:STA510A - Rail/Tube 制造商:STMicroelectronics 功能描述:AMP AUDIO POWER QUAD POWERSO36 制造商:STMicroelectronics 功能描述:AMP, AUDIO, POWER, QUAD, POWERSO36 |
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| STA510F | 功能描述:音頻放大器 44V 5.5A Quad PWR Half Bridge 150 mOhm RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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 |
| STA510F_11 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:44-V, 5.5-A, quad power half-bridge |
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