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参数资料
| 型号： | LM4875MMX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频控制 |
| 英文描述： | 1 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO8 |
| 封装： | 0.118 INCH, MSOP-8 |
| 文件页数： | 7/15页 |
| 文件大小： | 664K |
| 代理商： | LM4875MMX/NOPB |
National P/N LM4875 - 750mW Audio Power Amplifier with DC Volume Control and Headphone Switch
The LM4875 is a mono bridged audio power amplifier with DC voltage volume control. The LM4875 is capable
of delivering 750mW of continuous average power into an 8
load with less than 1% THD when powered by
a 5V power supply. Switching between bridged speaker mode and headphone (single ended) mode is
accomplished using the headphone sense pin. To conserve power in portable applications, the LM4875's
micropower shutdown mode (IQ = 0.7A, typ) is activated when less than 300mV is applied to the DC
Vol/SD# pin.
Boomer audio power amplifiers are designed specifically to provide high power audio output while
maintaining high fidelity. They require few external components and operate on low supply voltages.
Features
q
Precision DC voltage volume control
q
Headphone amplifier mode
q
"Click and pop" suppression
q
Shutdown control when volume control pin is low
q
Thermal shutdown protection
Key Specification
PO at 1.0% THD+N into 8
750mW (typ)
PO at 10% THD+N into 8
1W (typ)
Shutdown current
0.7A(typ)
Supply voltage range
2.7V to 5.5V
Applications
q
GSM phones and accessories, DECT, office phones
q
Hand held radio
q
Other portable audio devices
[Information as of 5-Aug-2002]
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4875MX | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4875MX/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4876 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:1.1W Audio Power Amplifier with Logic Low Shutdown |
| LM4876_03 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:1.1W Audio Power Amplifier with Logic Low Shutdown |
| LM4876M | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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