- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367565 > LM4766TF AUDIO AMPLIFIER|DUAL|BIPOLAR|ZIP|15PIN|PLASTIC PDF資料下載
參數(shù)資料
| 型號： | LM4766TF |
| 元件分類： | 音頻放大器 |
| 英文描述： | AUDIO AMPLIFIER|DUAL|BIPOLAR|ZIP|15PIN|PLASTIC |
| 中文描述： | 音頻放大器|雙|雙極|郵政編碼| 15針|塑料 |
| 文件頁數(shù)： | 13/15頁 |
| 文件大?。?/td> | 480K |
| 代理商： | LM4766TF |
Application Information
(Continued)
verify that with the required power supply voltage and load
impedance, that the required heatsink value
θ
is feasible
given system cost and size constraints. Once the heatsink
issues have been addressed, the required gain can be deter-
mined from Equation (6)
(6)
From Equation (6) the minimum A
V
is:
By selecting a gain of 21, and with a feedback resistor, R
f
=
20k
, the value of R
i
follows from Equation (7)
R
i
= R
f
(A
V
1)
Thus with R
i
= 1k
a non-inverting gain of 21 will result.
Since the desired input impedance was 47k
, a value of
47k
was selected for R
IN
. The final design step is to ad-
A
V
≥
15.5.
(7)
dress the bandwidth requirements which must be stated as a
pair of 3dB frequency points. Five times away from a 3dB
point is 0.17dB down from passband response which is bet-
ter than the required
±
0.25dB specified. This fact results in a
low and high frequency pole of 4Hz and 100kHz respec-
tively. As stated in the
External Components
section, R
i
in
conjunction with C
i
create a high-pass filter.
C
i
≥
1/(2
π
*
1k
*
4Hz) = 39.8μF;
The high frequency pole is determined by the product of the
desired high frequency pole, f
, and the gain, A
. With a
A
= 21 and f
= 100kHz, the resulting GBWP is 2.1MHz,
which is less than the guaranteed minimum GBWP of the
LM4766 of 8MHz. This will ensure that the high frequency re-
sponse of the amplifier will be no worse than 0.17dB down at
20kHz which is well within the bandwidth requirements of the
design.
use 39μF.
L
www.national.com
13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4836MTEX | Dual Audio Amplifier |
| LM4836MTX | Dual Audio Amplifier |
| LM4851IBL-1 | Amplifier. Other |
| LM4854LD | AUDIO AMPLIFIER|DUAL|LLCC|14PIN|CERAMIC |
| LM4854MM | AUDIO AMPLIFIER|DUAL|TSSOP|10PIN|PLASTIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4766TF/NOPB | 功能描述:音頻放大器 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 |
| LM4766TF/NOPB | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC |
| LM476-S | 功能描述:基本/快動(dòng)開關(guān) Foot Switch RoHS:否 制造商:Omron Electronics 觸點(diǎn)形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級:IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
| LM4780 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Audio Power Amplifier Series Stereo 60W, Mono 120W Audio Power Amplifier with Mute |
| LM4780TA | 功能描述:音頻放大器 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。