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
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | 15W Stereo Class-D Audio Power Amplifier datasheet (Rev. B) | 2014年 1月 7日 | |
| Application note | Using Thermal Calculation Tools for Analog Components (Rev. A) | 2019年 8月 30日 | ||
| Application note | Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) | 2019年 8月 26日 | ||
| Application note | AN-1849 An Audio Amplifier Power Supply Design (Rev. C) | 2019年 6月 27日 | ||
| Application note | AN-1737 Managing EMI in Class D Audio Applications (Rev. A) | 2013年 5月 1日 |
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。
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| 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
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
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。