TPA6136A2
- Patented DirectPath Technology Eliminates Need for DC-Blocking Capacitors
- Outputs Biased at 0 V
- Excellent Low Frequency Fidelity
- Active Click and Pop Suppression
- HI-Z Output Mode Allows Sharing Output Jack
- 2.1 mA Typical Supply Current
- Fully Differential Inputs Reduce System Noise
- Also Configurable as Single-Ended Inputs
- SGND Pin Eliminates Ground Loop Noise
- Constant Maximum Output Power from 2.3 V to 5.5 V Supply
- Simplifies Design to Prevent Acoustic Shock
- MicrosoftTM Windows VistaTM Compliant
- 100 dB Power Supply Noise Rejection
- Wide Power Supply Range: 2.3 V to 5.5 V
- Gain Settings: 0 dB and 6 dB
- Short-Circuit and Thermal-Overload Protection
- ±8 kV HBM ESD Protected Outputs
- Small Package Available
- 16-Ball, 1.6 x 1.6 mm, 0.4 mm Pitch WCSP
- APPLICATIONS
- Smart Phones / Cellular Phones
- Portable Media / MP3 Players
- Notebook Computers
- Portable Gaming
DirectPath is a trademark of Texas Instruments.
Windows Vista is a trademark of Microsoft Corporation.
The TPA6136A2 (sometimes referred to as TPA6136) is a DirectPath™ stereo headphone amplifier that eliminates the need for external dc-blocking output capacitors. Differential stereo inputs and built-in resistors set the device gain, further reducing external component count. Gain is selectable at 0 dB or 6 dB. The amplifier drives 25 mW into 16 
speakers from a single 2.3 V supply. The TPA6136A2 (TPA6136) provides a constant maximum output power independent of the supply voltage, thus facilitating the design for prevention of acoustic shock.
The TPA6136A2 (TPA6136) features fully differential inputs with an integrated low pass filter to reduce system noise pickup between the audio source and the headphone amplifier and to reduce DAC out-of-band noise. The high power supply noise rejection performance and differential architecture provides increased RF noise immunity. For single-ended input signals, connect INL+ and INR+ to ground.
The device has built-in pop suppression circuitry to completely eliminate disturbing pop noise during turn-on and turn-off. The amplifier outputs have short-circuit and thermal-overload protection along with ±8 kV HBM ESD protection, simplifying end equipment compliance to the IEC 61000-4-2 ESD standard.
The TPA6136A2 (TPA6136) operates from a single 2.3 V to 5.5 V supply with 2.1 mA of typical supply current. Shutdown mode reduces supply current to less than 1 µA.
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 | 25-mW DIRECTPATH STEREO HEADPHONE AMPLIFIER WITH POP SUPPRESSION AND HI-Z MODE datasheet (Rev. A) | 2009/8/2 | |||
| 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 | ||||
| 類比設計期刊 | Precautions for connecting APA outputs to other devices | 2010/5/6 | ||||
| 類比設計期刊 | 2Q 2010 Issue Analog Applications Journal | 2010/5/6 |
設計與開發
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TPA6136A2YFFEVM — TPA6136A2YFF 評估模組
The TPA6136A2YFFEVM allows the engineer to evaluate the TPA6136A2, a stereo DirectPath™ (capacitor-free) headphone amplifier with 2 gain settings (0dB and +6dB). In addition, the TPA6136A2 includes a Hi-Z mode, allowing for multiple signals to be driven on the same output jack.
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YFF) | 16 | Ultra Librarian |