LM4855
- 1.1W (Typ) Output Power with 8Ω Mono BTL Load
- 115mW (Typ) Output Power with Stereo 32Ω BTL Loads
- SPI Programmable 32 Step Digital Volume Control
- Eight Distinct Output Modes
- DSBGA and WQFN Surface Mount Packaging
- "Click and Pop" Suppression Circuitry
- Thermal Shutdown Protection
- Low Shutdown Current (0.1uA, Typ)
Key Specifications
- THD+N at 1kHz, 1.1W into 8Ω BTL: 1.0% (Typ)
- THD+N at 1kHz, 115mW into 32Ω BTL: 0.5% (Typ)
- Single Supply Operation: 2.6 to 5.0V
All trademarks are the property of their respective owners.
The LM4855 is an audio power amplifier system capable of delivering 1.1W (typ) of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N and 115mW (typ) per channel of continuous average power into stereo 32Ω BTL loads with 0.5% THD+N, using a 5V power supply.
The LM4855 features a 32 step digital volume control and eight distinct output modes. The digital volume control and output modes are programmed through a three-wire SPI serial control interface, that allows flexibility in routing and mixing audio channels.
The LM4855 is designed for cellular phone, PDA, and other portable handheld applications. It delivers high quality output power from a surface-mount package and requires only six external components.
The industry leading DSBGA package only utilizes 2mm x 2.3mm of PCB space, making the LM4855 the most space efficient audio sub system available today.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM4855 Integrated Audio Amplifier System datasheet (Rev. C) | 2013年 5月 1日 |
設計與開發
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 引腳 | 下載 |
|---|---|---|
| WQFN (NHW) | 24 | 檢視選項 |
訂購與品質
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