- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄359850 > 3718 (Allegro MicroSystems, Inc.) DIODE SCHOTTKY DUAL COMMON-ANODE 30V 150mW 0.38V-vf 200mA-IFM 1mA-IF 0.2uA-IR SOT-523 3K/REEL PDF資料下載
參數(shù)資料
| 型號(hào)： | 3718 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | DIODE SCHOTTKY DUAL COMMON-ANODE 30V 150mW 0.38V-vf 200mA-IFM 1mA-IF 0.2uA-IR SOT-523 3K/REEL |
| 中文描述： | 低壓音頻功率放大器 |
| 文件頁(yè)數(shù)： | 4/6頁(yè) |
| 文件大?。?/td> | 88K |
| 代理商： | 3718 |
3718
LOW-VOLTAGE AUDIO POWER AMPLIFIER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
APPLICATIONS INFORMATION
Selection of power-supply voltage and speaker impedance allows
a designer to choose audio power levels within the allowable package
power dissipation rating for any maximum operating temperature. No
unique precautions are necessary when designing with this device. It
is stable and ac short-circuit immune.
External component selection for this low-power amplifier involves
only two capacitors — one for output coupling and one for feedback
and ripple decoupling. The coupling capacitor value should be selected
to provide the desired low-frequency cutoff with the chosen load
impedance. The decoupling capacitor should be chosen for both
low-frequency audio rolloff and supply-ripple rejection.
Ripple rejection is not practical to calculate due to the large
number of mechanisms involved. A 500
μ
F capacitor achieves typi-
cally 25 dB rejection at 120 Hz.
The high gain and the high input impedance of the power amplifier
recommend use of this device in many diverse applications. However,
the input stage does have other characteristics that should be taken
into account for best results. The input is referenced to ground for
internal biasing and must be provided with a dc path to ground. A
current of typically 1
μ
A flows from the input through the volume
control. This produces an IR drop that is multiplied by the closed loop
dc gain of the amplifier and appears as an error in output centering.
This recommends a value of 200 k
or less for the volume control;
values of less than 100 k
are preferred.
The selection of amplifier load impedance involves more than just
consideration of the desired power output. A low load impedance will
produce the highest power output for any given supply voltage. Higher
impedances will furnish significant reduction in harmonic distortion and
improvement in overall repeatability in power output capacity.
Special steps toward minimizing tendencies towards instabilities
of all types were taken in the design of this device. However, as with
all high-gain circuits, care should be given to printed wiring board
layout to avoid undesirable effects. Inputs and outputs should be well
separated and should avoid common-mode impedances wherever
possible. For best performance, connect low-level input-signal ground
terminals and the decoupling capacitor ground terminal together at pin
3 (signal ground); connect the high-level speaker ground terminal and
the power supply ground terminal together at pin 2 (power ground).
The signal ground and the power ground should be interconnected
at only one point.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 380-10-116-00-001 | TRANS PREBIASED NPN 200MW SOT323 |
| 380-90-116-00-001 | TRANS PREBIASED NPN 200MW SOT323 |
| 383-10-116-00-001 | TRANS PREBIASED NPN 200MW SOT-23 |
| 383-90-116-00-001 | TRANS PREBIASED NPN 200MW SOT23 |
| 3845 | TRANS PREBIASED NPN 150MW SOT523 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 37-18 TGG | 制造商:SPC Multicomp 功能描述:JACK, MMCX, EDGE MNT, SWITCHING, LRG |
| 3718.8 | 功能描述:JUMPER CROSS FOR TERMINAL BLOCK RoHS:是 類(lèi)別:連接器，互連式 >> 接線座 - 配件 - 跳線 系列:- 標(biāo)準(zhǔn)包裝:10 系列:- 類(lèi)型:接線板 － 交叉連接 位置數(shù):4 樣式:- 適用于相關(guān)產(chǎn)品:接線座 其它名稱(chēng):FBSTB 4-6 |
| 37180 | 功能描述:防靜電控制產(chǎn)品 INPLANT HANDLER, CELL SIZE 12-5/8 x 10-3/4 x 3-5/8 IN RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Air Ionizers 類(lèi)型:Mini 顏色: 大小:4.5 in x 3.3 in x 2 in |
| 371-801A | 制造商:LG Corporation 功能描述:PACKING |
| 371-801B | 制造商:LG Corporation 功能描述:PACKING |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。