- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄384592 > LDC08A (National Semiconductor Corporation) 3W Audio Power Amplifier with Shutdown Mode PDF資料下載
參數(shù)資料
| 型號(hào)： | LDC08A |
| 廠(chǎng)商： | National Semiconductor Corporation |
| 英文描述： | 3W Audio Power Amplifier with Shutdown Mode |
| 中文描述： | 3W音頻功率放大器關(guān)斷模式 |
| 文件頁(yè)數(shù)： | 13/15頁(yè) |
| 文件大?。?/td> | 543K |
| 代理商： | LDC08A |
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)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)當(dāng)前第13頁(yè)第14頁(yè)第15頁(yè)
Application Information
(Continued)
must make sure that the power supply choice along with the
output impedance does not violate the conditions explained
in the
Power Dissipation
section.
Once the power dissipation equations have been addressed,
the required differential gain can be determined from Equa-
tion 4.
(4)
R
f
/R
i
= A
VD
/2
(5)
From Equation 4, the minimum A
VD
is 2.83; use A
VD
= 3.
Since the desired input impedance was 20k
, and with a
A
VD
impedance of 2, a ratio of 1.5:1 of R
f
to R
i
results in an
allocation of R
i
= 20k
and R
f
= 30k
. The final design step
is to address 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 better than the required
±
0.25dB specified.
f
L
= 100Hz/5 = 20Hz
f
H
= 20kHz * 5 = 100kHz
As stated in the
External Components
section, R
i
in con-
junction with C
i
create a highpass filter.
C
i
≥
1/(2
π
*20k
*20Hz) = 0.397μF; use 0.39μF
The high frequency pole is determined by the product of the
desired frequency pole, f
H
, and the differential gain, A
VD
.
With a A
VD
= 3 and f
H
= 100kHz, the resulting GBWP =
150kHz which is much smaller than the LM4991 GBWP of
4MHz. This figure displays that if a designer has a need to
design an amplifier with a higher differential gain, the
LM4991 can still be used without running into bandwidth
limitations.
L
www.national.com
13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LDO513 | IP Library: Power Supply Range 2.9V to 13V, Low Power, 50mA Low Dropout Voltage Regulator |
| LDO514 | IP Library: High PSRR, Very Low power, 200mA Low Dropout Voltage Regulator |
| LDO517 | IP Library: Wide Range ESR Capacitor, Low Noise, 100mA Low Dropout Voltage Regulator |
| LDO518 | IP Library: Low Noise, High PSRR 100mA Low Dropout Voltage Regulator |
| LDO57 | IP Library: High Output Current, Low power, 400mA Low Dropout Voltage Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LDC1000 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:LDC1000 Inductance to Digital Converter |
| LDC1000EVM | 制造商:Texas Instruments 功能描述:Evaluation Module for Inductance to Digital Converter with Sample PCB Coil 制造商:Texas Instruments 功能描述:LDC1000EVM - Boxed Product (Development Kits) 制造商:Texas Instruments 功能描述:EVAL BOARD FOR LDC1000 制造商:Texas Instruments 功能描述:LDC1000 INDUCTIVE SENSING EV |
| LDC1000NHRJ | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:IC INDUCTIVE TO DIGITAL CONVERTE 制造商:Texas Instruments 功能描述:Data Converter ICs - Various Inductive-to-Digital Converter 制造商:Texas Instruments 功能描述:INDUCTIVE-TO-DIGITAL CONV, 16BIT, SON-16, Supply Voltage Min:4.75V, Supply Voltage Max:5.25V, Operating Temperature Min:-40C, Operating Temperature Max:125C, Digital IC Case Style:SON, No. of Pins:16, Data Interface:SPI , RoHS Compliant: Yes |
| LDC1000NHRR | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:IC INDUCTIVE TO DIGITAL CONVERTE 制造商:Texas Instruments 功能描述:Data Converter ICs - Various Inductive-to-Digital Converter 制造商:Texas Instruments 功能描述:INDUCTIVE-TO-DIGITAL CONV, 16BIT, SON-16, Supply Voltage Min:4.75V, Supply Voltage Max:5.25V, Operating Temperature Min:-40C, Operating Temperature Max:125C, Digital IC Case Style:SON, No. of Pins:16, Data Interface:SPI , RoHS Compliant: Yes |
| LDC1000NHRT | 制造商:Texas Instruments 功能描述:INDUCTIVE-TO-DIGITAL CONVERTER - Tape and Reel 制造商:Texas Instruments 功能描述:INDUCTIVE-TO-DIGITAL CONVERTER - Cut TR (SOS) 制造商:Texas Instruments 功能描述:IC INDUCTIVE TO DIGITAL CONVERTE 制造商:Texas Instruments 功能描述:CONVERTER INDUCTANCE - DIGITA 制造商:Texas Instruments 功能描述:Data Converter ICs - Various Inductive-to-Digital Converter 制造商:Texas Instruments 功能描述:INDUCTIVE-TO-DIGITAL CONV, 16BIT, SON-16, Resolution (Bits):16bit, Supply Voltage Type:Single, Supply Voltage Min:4.75V, Supply Voltage Max:5.25V, Supply Current:1.7mA, Digital IC Case Style:SON, No. of Pins:16, Input Channel Type:- , RoHS Compliant: Yes |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。