- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄380759 > STA7360 (意法半導(dǎo)體) 20W BRIDGE/STEREO AUDIO AMPLIFIER WITH CLIPPING DETECTOR PDF資料下載
參數(shù)資料
| 型號： | STA7360 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 20W BRIDGE/STEREO AUDIO AMPLIFIER WITH CLIPPING DETECTOR |
| 中文描述： | 20瓦橋/立體聲音頻放大器，具有裁剪探測器 |
| 文件頁數(shù)： | 12/18頁 |
| 文件大小： | 481K |
| 代理商： | STA7360 |
STA7360
12/18
Figure 25. ICV - PNP Gain vs. I
C
Figure 26. ICV - PNP VCE(sat) vs. I
C
Figure 27. ICV - PNP cut-off frequency vs. I
C
OUTPUT STAGE
Poor current capability and low cutoff frequency are
well known limits of the standard lateral PNP. Com-
posite PNP-NPN power output stages have been
widely used, regardless their high saturation drop.
This drop can be overcome only at the expense of ex-
ternal components, namely, the bootstrap capacitors.
The availability of 4A isolated collector PNP (ICV
PNP) adds versatility to the design. The performance
of this component, in terms of gain, VCEsat and cut-
off frequency, is shown in fig. 25, 26, 27 respectively.
It is realized in a new bipolar technology, character-
ized by top-bottom isolation techniques, allowing the
implementation of low leakage diodes, too. It guaran-
tees BVCEO >20V and BVCBO >50V both for NPN
and PNP transistors. Basically, the connection
shown in fig. 13 has been chosen. First of all because
its voltage swing is rail-to-rail, limited only by the VC-
Esat of the output transistors, which are in the range
of 0.3W each. Then, the gain VOUT/VIN is greater
than unity, approximately 1+R2/R1. (VCC/2 is fixed
by an auxiliary amplifier common to both channel). It
is possible, controlling the amount of this local feed-
back, to force the loop gain (A * b) to less than unity
at frequencies for which the phase shift is 180°. This
means that the output buffer is intrinsically stable and
not prone to oscillation.
Figure 28. The New Output Stage
In contrast, with the circuit of fig. 29, the solution
adopted to reduce the gain at high frequencies is the
use of an external RC network.
AMPLIFIER BLOCK DIAGRAM
The block diagram of each voltage amplifier is shown
in fig. 30. Regardless of production spread, the cur-
rent in each final stage is kept low, with enough mar-
gin on the minimum, below which cross-over
distortion would appear.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| STAN250A | RF & MICROWAVE TRANSISTORS AVIONICS APPLICATIONS |
| START405 | NPN Silicon RF Transistor |
| START405TR | NPN Silicon RF Transistor |
| START420 | NPN Silicon RF Transistor |
| START420TR | NPN Silicon RF Transistor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STA7360_11 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:20 W bridge/stereo audio amplifier with clipping detector |
| STA801 | 制造商:SANKEN 制造商全稱:Sanken electric 功能描述:2-Output Separate Excitation Switching Type |
| STA801M | 制造商:Sanken Electric Co Ltd 功能描述:IC REG BUCK 0.5A DUAL 10SIP |
| STA802M | 制造商:SANKEN 制造商全稱:Sanken electric 功能描述:2-Output Separate Excitation Switching Type |
| STA8058 | 功能描述:射頻微控制器 - MCU GPS multi-chip Module RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:Si100x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:24 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:4 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LGA-42 安裝風(fēng)格:SMD/SMT 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。