TPA3140D2
- 2x10 W/ch into 6-Ω Loads at 10% THD+N from a 12-V Supply
- 2x10 W/ch into 8-Ω Loads at 10% THD+N from a 13-V Supply
- Up to 90% Efficient Class-D Operation (8 Ω) Eliminates Need for Heat Sinks
- <0.05% THD+N at 1 W/4 Ω/1 kHz
- <65-µV A-wgt Output Noise
- Wide Supply Voltage Range Allows Operation from 4.5 V to 14.4 V
- Inductor-Free Operation
- Enhanced EMI Performance with Spread Spectrum and 1SPW Operation
- SpeakerGuard™ Speaker Protection Includes Automatic Gain Limit, Adjustable Power Limiter, and DC Protection
- Robust Pin-to-Pin, Pin-to-Ground, and Pin-to-Power Short Circuit Protection and Thermal Protection
- Four Selectable, Fixed Gain Settings
- Single Ended or Differential Analog Inputs
- Click and Pop Free Startup
The TPA3140D2 is an efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers at up to 10 W, 6 Ω, or 8 Ω (per channel).
Advanced EMI Suppression Technology with Spread Spectrum Control and 1SPW modulation scheme enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements for system cost reduction. TPA3140D2 is not only fully protected against shorts and overload, the SpeakerGuard™ speaker protection circuitry includes an adjustable Automatic Gain Limit (AGL), an adjustable power limiter and a DC detection circuit for protection of the connected speakers. The AGL allows adjustment of the maximum output voltage without signal clipping for enhanced speaker protection and audio quality. The DC detect and Pin-to-Pin, Pin-to-Ground, and Pin-to-Power Short Circuit protection circuit protect the speakers from output DC and pin shorts caused in production. The outputs are also fully protected against shorts to GND, PVCC, and output-to-output. The short-circuit protection and thermal protection includes an auto recovery feature.
The TPA3140D2 can drive stereo speakers with as low as 4-Ω impedance. The high efficiency of the TPA3140D2, 90% with an 8-Ω load, eliminates the need for an external heat sink, and TPA3140D2 will be able to output full power on a 2-layer PCB.
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 | TPA3140D2 10-W Inductor Free Stereo (BTL) Class-D Audio Amplifier with Ultra Low EMIand AGL datasheet (Rev. B) | PDF | HTML | 2017/12/18 | ||
| 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 | The bq27426 Performace Under Dynamic Battery Voltage for Portable Audio Applicat | 2017/10/9 | ||||
| 應用說明 | TPA3140D2 Design Considerations for EMC | PDF | HTML | 2015/2/13 | |||
| 應用說明 | TPA3140D2 PLIMIT and AGL | PDF | HTML | 2015/1/23 | |||
| 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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TPA3140D2PWPEVM — TPA3140D2PWPEVM - 無電感器 10W 立體聲道 (BTL) D 類音訊放大器評估模組
TPA3140D2 是一款高效率的 D 類音訊功率放大器，可驅動橋接式立體聲喇叭，每聲道最高 10W
TPA3140D2 採用含展頻控制的先進 EMI 抑制技術，而且 1SPW 調變方案可在輸出端使用價格低廉的鐵氧體磁珠濾波器，同時滿足降低系統成本的 EMC 要求
TPA3140D2 裝置配備短路保護、熱保護，以及過電壓、欠電壓及 DC 保護，可全面防止發生故障。故障會回報給處理器，防止裝置在過載情況下受損。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |