- 制造厂商：TI
- 产品类别：音频
- 技术类目：音频放大器 - 扬声器放大器
- 功能描述：具有 DC 音量控制和可选增益的立体声 2W 音频功率放大器
- 点击这里打开及下载LM4838的技术文档资料
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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
All trademarks are the property of their respective owners. Boomer is a trademark of Texas Instruments.
- Audio input type
- Analog Input
- Architecture
- Class-AB
- Speaker channels (Max)
- Stereo
- Power stage supply (Max) (V)
- 5.5
- Power stage supply (Min) (V)
- 2.7
- Load (Min) (ohms)
- 3
- Output power (W)
- 2.5
- SNR (dB)
- 93
- THD + N @ 1 kHz (%)
- 0.3
- Iq (Typ) (mA)
- 15
- Control interface
- Hardware
- Closed/open loop
- Open
- Analog supply (Min) (V)
- 2.7
- Analog supply (Max) (V)
- 5.5
- PSRR (dB)
- 74
- Operating temperature range (C)
- -40 to 85
LM4838的完整型号有：LM4838MTEX/NOPB，以下是这些产品的关键参数及官网采购报价：
LM4838MTEX/NOPB，工作温度：-40 to 85，封装：HTSSOP (PWP)-28，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM4838MTEX/NOPB的批量USD价格：1.557（1000+）
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