TPA3121D2
- 10-W/Ch Stereo Into an 8-Ω Load From a 24-V Supply
- 15-W/Ch Stereo Into a 4-Ω Load from a 22-V Supply
- 30-W/Ch Mono Into an 8-Ω Load from a 22-V Supply
- Operates From 10 V to 26 V
- Can Run From +24 V LCD Backlight Supply
- Efficient Class-D Operation Eliminates Need for Heat Sinks
- Four Selectable, Fixed-Gain Settings
- Internal Oscillator to Set Class D Frequency (No External
Components Required) - Single-Ended Analog Inputs
- Thermal and Short-Circuit Protection With Auto Recovery
- Space-Saving Surface Mount 24-Pin TSSOP Package
- Advanced Power-Off Pop Reduction
- APPLICATIONS
- Flat Panel Display TVs
- DLP TVs
- CRT TVs
- Powered Speakers
DLP Is a trademark of Texas Instruments
The TPA3121D2 is a 15-W (per channel), efficient, class-D audio power amplifier for driving stereo speakers in a single-ended configuration or a mono speaker in a bridge-tied-load configuration. The TPA3121D2 can drive stereo speakers as low as 4 Ω. The efficiency of the TPA3121D2 eliminates the need for an external heat sink when playing music.
The gain of the amplifier is controlled by two gain select pins. The gain selections are 20, 26, 32, and 36 dB.
The patented start-up and shutdown sequences minimize pop noise in the speakers without additional circuitry.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | 15W Stereo Class-D Audio Power Amplifier datasheet (Rev. B) | 2014/1/7 | |||
| 應用說明 | Using Thermal Calculation Tools for Analog Components (Rev. A) | 2019/8/30 | ||||
| 應用說明 | Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) | 2019/8/26 | ||||
| 應用說明 | AN-1849 An Audio Amplifier Power Supply Design (Rev. C) | 2019/6/27 | ||||
| 應用說明 | AN-1737 Managing EMI in Class D Audio Applications (Rev. A) | 2013/5/1 |
設計與開發
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TPA3121D2EVM — TPA3121D2 評估模組 (EVM)
TPA3121D2 評估模組採用單一 20W D 類立體聲音訊功率放大器，搭配少量外部元件並安裝於電路板上，可直接驅動喇叭，並支援外部類比音訊輸入作為訊號來源。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 24 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。