TPA6139A2
- DirectPath™
- Eliminates Pops and Clicks
- Eliminates Output DC-Blocking Capacitors
- 3-V to 3.6-V Supply Voltage
- Low Noise and THD
- SNR > 105 dB at –1x Gain
- Typical Vn < 15 µVms 20 to 20 kHz at –1x
Gain - THD+N < 0.003% at 10-kΩ Load and –1x Gain
- 25 mW into 32-Ω Load
- 2-Vrms Output Voltage into 600-Ω Load
- Single-Ended Input and Output
- Programmable Gain Select Reduces Component
Count- 13x Gain Values
- Active Mute With More Than 80-dB Attenuation
- Short-Circuit and Thermal Protection
- ±8-kV HBM ESD Protected Outputs
The TPA6139A2 is a 25-mW, pop-free stereo headphone driver designed to reduce component count, board space and cost. It is ideal for single-supply electronics where size and cost are critical design parameters.
The TPA6139A2 device does not require a power supply greater than 3.3 V to generate its 25 mW, nor does it require a split rail power supply.
The TPA6139A2 device was designed using TI’s patented DirectPath™ technology, which integrates a charge pump to generate a negative supply rail that provides a clean, pop-free ground biased output. The TPA6139A2 is capable of driving 25 mW into a 32-Ω load and 2 Vrms into a 600-Ω load. DirectPath also allows the removal of the costly output DC-blocking capacitors.
The device has fixed gain single-ended inputs with a gain select pin. Using a single resistor on this pin, the designer can choose from 13 internal programmable gain settings to match the line driver with the CODEC output level. It also reduces the component count and board space.
Headphone outputs have &plusm;8-kV HBM ESD protection enabling a simple ESD protection circuit. The TPA6139A2 has built-in active mute control with more that 80-dB attenuation for pop-free mute ON and OFF control.
The TPA6139A2 device is available in a 14-pin TSSOP and a 16-pin QFN. For a pin-compatible, 2-Vrms line driver see DRV612.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPA6139A2 DirectPath™ 25-mW Headphone Amplifier With Programmable-Fixed Gain 数据表 (Rev. C) | PDF | HTML | 2016-4-27 | ||
| 应用手册 | Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) | 2019-8-26 | ||||
| 应用手册 | AN-1849 An Audio Amplifier Power Supply Design (Rev. C) | 2019-6-27 |
设计与开发
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TPA6139A2EVM — TPA6139A2EVM 评估模块
TPA6139A2EVM 客户评估模块 (EVM) 演示了德州仪器 (TI) 的 TPA6139A2PW 集成电路的功能和操作。TPA6139A2PW 是一款 25mW 立体声线路驱动器，设计用于减少组件数、缩减电路板面积并节约成本。它是单电源电子产品的理想选择，对于这类产品，大小和成本是关键设计参数
TPA6139A2 无需高于 3.3V 的电源来生成它的 25mW 输出，也不需要分离轨电源。
其设计采用 TI 的 DIRECTPATH™ 专利技术，该技术集成了充电泵来生成负电源轨，从而提供良好的无杂音接地偏置输出。TPA6139A2 可为 32Ω 的负载驱动 25mW，为 600Ω (...)
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RGT) | 16 | Ultra Librarian |
| TSSOP (PW) | 14 | Ultra Librarian |
订购和质量
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