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參數(shù)資料
| 型號： | LM4860MWA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.15 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC |
| 封裝： | WAFER |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 319K |
| 代理商： | LM4860MWA |
Typical Performance Characteristics (Continued)
Application Information
BRIDGE CONFIGURATION EXPLANATION
As shown in
Figure 1, the LM4860 has two operational am-
plifiers internally, allowing for a few different amplifier con-
figurations. The first amplifier’s gain is externally config-
urable, while the second amplifier is internally fixed in a
unity-gain, inverting configuration. The closed-loop gain of
the first amplifier is set by selecting the ratio of R
f to Ri while
the second amplifier’s gain is fixed by the two internal 40 k
resistors.
Figure 1 shows that the output of amplifier one
serves as the input to amplifier two which results in both am-
plifiers producing signals identical in magnitude, but out of
phase 180. Consequently, the differential gain for the IC is:
A
vd =2 * (Rf/Ri)
By driving the load differentially through outputs V
O1 and
V
O2, an amplifier configuration commonly referred to as
“bridged mode” is established. Bridged mode operation is
different from the classical single-ended amplifier configura-
tion where one side of its load is connected to ground.
A bridge amplifier design has a few distinct advantages over
the single-ended configuration, as it provides differential
drive to the load, thus doubling output swing for a specified
LM4860 Noise Floor
vs Frequency
DS011988-18
Supply Current Distribution
vs Temperature
DS011988-19
Power Dissipation
vs Output Power
DS011988-20
Output Power vs
Load Resistance
DS011988-21
Output Power vs
Supply Voltage
DS011988-22
Open Loop
Frequency Response
DS011988-23
Power Supply
Rejection Ratio
DS011988-24
LM4860
www.national.com
5
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| LM4861MWA | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC |
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| LM4862G-S08-R | 0.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4862L-D08-T | 0.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP8 |
| LM4862L-S08-R | 0.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4860MX | 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 |
| LM4860MX/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 |
| LM4861 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.1W Audio Power Amplifier with Shutdown Mode |
| LM4861_03 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.1W Audio Power Amplifier with Shutdown Mode |
| LM4861M | 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 |
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