LM3875 高性能 56W 音频功率放大器

The LM3875 is a high-performance audio power amplifier capable of delivering 56W of continuous average power to an 8 load with 0.1% THD+N from 20Hz to 20kHz.

The performance of the LM3875, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, caused by shorts to the supplies, thermal runaway, and instantaneous temperature peaks.

The LM3875 maintains an excellent signal-to-noise ratio of greater than 95dB(min) with a typical low noise floor of 2.

LM3875 特性

56W continuous average output power into 8
100W instantaneous peak output power capability
Signal-to-Noise Ratio >95dB (min)
Output protection from a short to ground or to the supplies via internal current limiting circuitry
Output over-voltage protection against transients from inductive loads
Supply under-voltage protection, not allowing internal biasing to occur when |V+| + |V-| <= 12V, thus eliminating turn-on and turn-off transients
11 lead TO-220 package
Wide supply voltage range: |V+| + |V-| = 20V to 84V

LM3875 器件用途

Component or compact stereos
Self-powered speakers
Surround-sound amplifiers
High-end stereo TVs

LM3875 工具与软件

培训内容	型号	软件/工具类型
音频的快速搜索选择工具	AUDIO_SELECTION_TOOL	免费评估工具
LM3875MSOP 评估模块 (EVM)	LM3875EVM	开发电路板/EVM