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参数资料
| 型号： | LM4873MT/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| 封装： | 4.40 MM, PLASTIC, TSSOP-20 |
| 文件页数： | 4/25页 |
| 文件大小： | 963K |
| 代理商： | LM4873MT/NOPB |
Typical Performance Characteristics (Continued)
Channel Separation
Power Supply
Rejection Ratio
10099320
10099321
Open Loop
Frequency Response
Supply Current vs
Supply Voltage
10099322
10099323
External Components Description
(Refer to Figure 1.)
Components
Functional Description
1.
R
i
The inverting input resistance, along with R
f, set the closed-loop gain. Ri, along with Ci, form a high pass
filter with f
c = 1/(2
πR
iCi).
2.
C
i
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
i, along with Ri, create a
highpass filter with f
c = 1/(2
πR
iCi). Refer to the section, SELECTING PROPER EXTERNAL
COMPONENTS, for an explanation of determining the value of C
i.
3.
R
f
The feedback resistance, along with R
i, set the closed-loop gain.
4.
C
s
The supply bypass capacitor. Refer to the POWER SUPPLY BYPASSING section for information about
properly placing, and selecting the value of, this capacitor.
5.
C
B
The capacitor, C
B, filters the half-supply voltage present on the BYPASS pin. Refer to the SELECTING
PROPER EXTERNAL COMPONENTS section for information concerning proper placement and selecting
C
B’s value.
LM4873
www.national.com
12
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相关代理商/技术参数 |
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| LM4873MTX | 功能描述:IC AMP AUDIO PWR 3W STER 20TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4874 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:2.1W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown |
| LM4874MH | 制造商:NSC 制造商全称:National Semiconductor 功能描述:2.1W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown |
| LM4874MH/NOPB | 功能描述:IC AMP AUDIO PWR 2.6W AB 20TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4875 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch |
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