- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄380759 > STA5100 (意法半導(dǎo)體) 140W MONO BASH POWER AMPLIFIER PDF資料下載
參數(shù)資料
| 型號(hào)： | STA5100 |
| 廠(chǎng)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)： | 9/14頁(yè) |
| 文件大?。?/td> | 146K |
| 代理商： | STA5100 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)當(dāng)前第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)
9/14
STA5100
Figure 2. Compressor attenuation vs. input amplitude
ABSOLUTE VALUE BLOCK
The absolute value block rectifies the signal after the compression to extract the control voltage for the external
digital converter. The output voltage swing is internally limited, the gain is internally fixed to 14.
The input impedance of the rectifier is very high , to allow the appropriate filtering of the audio signal before the
rectification (between Out_pre and Trk pins).
OUTPUT BRIDGE
The Output bridge amplifier makes the single-ended to Differential conversion of the Audio signal using two
power amplifiers, one in non-inverting configuration with gain equal to 2 and the other in inverting configuration
with unity gain. To guarantee the high input impedance at the input pins, Pwr_Inp1 and Pwr_Inp2, the second
amplifier stages are driven by the output of the first stages respectively.
POWER PROTECTION
To protect the output transistors of the power bridge a power detector is implemented (fig 3).
The current flowing in the power bridge and trough the series resistor Rsense is measured reading the voltage
drop between CD+1 and CD+. In the same time the voltage drop on the relevant power (Vds) is internally mea-
sured. These two voltages are converted in current and multiplied: the resulting current , Ipd, is proportional to
the instantaneous dissipated power on the relevant output transistor. The current Ipd is compared with the ref-
erence current Ipda, if bigger (dissipated power > 50W) a current, Iprot, is supplied to the Protection pin. The
aim of the current Iprot is to reduce the reference voltage for the digital converter supplying the power stage of
the chip, and than to reduce the dissipated power. The response time of the system must be less than 200
μ
Sec
to have an effective protection. As further protection, when Ipd reaches an higher threshold (when the dissipated
value is higher then 96W) the chip is shut down, forcing low the Stby/Mute pin, and the turn on sequence is
restarted.
1
-24
-18
-12
-6
0
2
3
4
5
6
7
8
|Vinpk|
Attenuation(dB)
D01AU1265
|Vh=1
|Vth=2.5|
|Vth=5|
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| STA515 | 200W MONO BASH POWER AMPLIFIER |
| STA5150 | 200W MONO BASH POWER AMPLIFIER |
| STA517B | 60 V 6 A quad power half bridge |
| STA517B13TR | 60 V 6 A quad power half bridge |
| STA530 | 4 X 50W STEREO BASH POWER AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| STA510A13TR | 制造商:ST 功能描述:0 |
| STA510D | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:60V 5A POWER FULL BRIDGE |
| 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。