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參數(shù)資料
| 型號(hào)： | LM2876MWC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 40 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC7 |
| 封裝： | WAFER |
| 文件頁數(shù)： | 20/22頁 |
| 文件大?。?/td> | 611K |
| 代理商： | LM2876MWC |
Equivalent Schematic (excluding active protection circuitry) (Continued)
External Components Description (Continued)
(
Figures 1, 2)
Components
Functional Description
12.
R
M
Mute resistance set up to allow 0.5 mA to be drawn from pin 8 to turn the muting function off.
→ R
M is calculated using: RM ≤ (|VEE| 2.6V)/I8 where I8 ≥ 0.5 mA. Refer to the Mute Attenuation vs
Mute Current curves in the Typical Performance Characteristics section.
13.
C
M
Mute capacitance set up to create a large time constant for turn-on and turn-off muting.
14.
R
SN
(Note 15)
Works with C
SN to stabilize the output stage by creating a pole that eliminates high frequency oscillations.
15.
C
SN
(Note 15)
Works with R
SN to stabilize the output stage by creating a pole that eliminates high frequency oscillations.
f
c = 1/(2πRSNCSN)
16.
L
(Note 15)
Provides high impedance at high frequecies so that R may decouple a highly capacitive load and reduce
the Q of the series resonant circuit due to capacitive load. Also provides a low impedance at low
frequencies to short out R and pass audio signals to the load.
17.
R
(Note 15)
18.
C
S
Provides power supply filtering and bypassing.
19.
S1
Mute switch that mutes the music going into the amplifier when opened.
Note 15: Optional components dependent upon specific design requirements. Refer to the Application Information section for more information.
OPTIONAL EXTERNAL COMPONENT INTERACTION
Although the optional external components have specific desired functions that are designed to reduce the bandwidth and elimi-
nate unwanted high frequency oscillations they may cause certain undesirable effects when they interact. Interaction may occur
for components whose reactances are in close proximity to one another. One example would be the coupling capacitor, C
C, and
the compensation capacitor, Cf. These two components act as low impedances to certain frequencies which will couple signals
from the input to the output. Please take careful note of basic amplifier component functionality when designing in these compo-
nents.
The optional external components shown in
Figure 2 and described above are applicable in both single and split voltage supply
configurations.
Typical Performance Characteristics
Safe Area
DS011775-17
SPiKe
Protection Response
DS011775-18
Supply Current vs
Supply Voltage
DS011775-19
LM2876
www.national.com
7
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2876T | 制造商:Texas Instruments 功能描述:AMP AUDIO + MUTE 75W 2876 SIL-11 |
| LM2876T | 制造商:Texas Instruments 功能描述:AMP AUDIO + MUTE 75W 2876 SIL-11 |
| LM2876T/NOPB | 功能描述:IC AMP AUDIO PWR 40W AB TO220-11 RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Overture™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM2876TF | 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 |
| LM2876TF NOPB | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono 40W Class-AB 11-Pin(11+Tab) TO-220 Rail |
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