LM4838是TI公司的一款扬声器放大器（AB类/D类）产品，LM4838是具有 DC 音量控制和可选增益的立体声 2W 音频功率放大器，本页介绍了LM4838的产品说明、应用、特性等，并给出了与LM4838相关的TI元器件型号供参考。
LM4838 - 具有 DC 音量控制和可选增益的立体声 2W 音频功率放大器 - 扬声器放大器（AB类/D类） - 低功耗放大器 - TI公司（Texas Instruments，德州仪器）
The LM4838 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4? with less than 1.0% THD or 2.2W into 3? with less than 1.0% THD (see Notes below).
Boomer audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4838 incorporates a DC volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.
The LM4838 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance.
Note: When properly mounted to the circuit board, the LM4838NJB, LM4838PWP, and LM4838NYC will deliver 2W into 4?. The LM4838PW and LM4838YZR will deliver 1.1W into 8?. See section for more information.
Note: An LM4838NJB and LM4838PWP that have been properly mounted to the circuit board and forced-air cooled will deliver 2.2W into 3?.
- DC Volume Control Interface
- System Beep Detect
- Stereo Switchable Bridged/Single-Ended Power Amplifiers
- Selectable Internal/External Gain and Bass Boost
- “Click and Pop” Suppression Circuitry
- Thermal Shutdown Protection Circuitry
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