TPA6166A2
- Ultra Low-Power, High-Performance DirectPath™ Class-G
Headphone Amplifier- Ground-Centered Output Eliminates DC-Blocking
Capacitors - 30 mW/Ch into 32 Ω / Ch at 1% THD+N
- –42 dB to +6 dB Volume Control
- 2.0 µV Output Noise at –42 dB Gain
- 91-dB PSRR
- Ground Loop Rejection for Reducing Crosstalk
- Ground-Centered Output Eliminates DC-Blocking
- Fully Differential Mic Preamplifier With Variable Gain
and 3.4-µV Low Noise- Integrated AC-Coupling Capacitor
- Ground Loop Rejection for Reducing Headphone to
Mic Crosstalk
- Choice of Two Mic Bias Voltages: 2.0 V and 2.6 V
- 92-dB PSRR
- Integrated Programmable Mic Bias Resistor
- Advanced Accessory Insertion, Removal, and Type Detection
- Passive Multi-button Support Using 10-Bit SAR ADC
- Implements Proprietary Scheme to Reduce Error Caused
by Audio Playback Signal in Presence of Finite Resistance
on Headset Ground Return Path
- Implements Proprietary Scheme to Reduce Error Caused
- Integrated Level-4 IEC ESD Protection on Jack Connected
Pins (on EVM) - Ultra Low-Power Chip Shutdown Mode
- I2C Interface
- Short-Circuit Protection
- 0.4-mm Pitch 25-Ball WCSP
The TPA6166A2 single-chip headset interface IC simplifies the challenges of detecting what kind of device an end user has plugged into the headphone jack while delivering excellent audio quality. The device enables smaller end products by integrating a high-performance, low-power DirectPath variable-attenuation class-G stereo headphone amplifier, variable-gain microphone preamplifier with bias with advanced accessory detection circuitry, all in a tiny 5-mm × 5-mm terminal, 0.4-mm pitch WCSP package.
The class-G headphone amplifier maximizes battery life by adjusting the supply voltage of the headphone amplifier based on audio signal level. With 8-µV output noise at 0-dB gain and PSRR of 91 dB, the headphone amplifier provides excellent audio performance. DirectPath eliminates the need for DC-blocking capacitors. The microphone preamplifier has two programmable gains of 12 dB and 24 dB, and 3.4 µV input referred noise.
The microphone bias voltage has two programmable settings of 2 V and 2.6 V. The bias output drives up to 1.2 mA of current, has a low output noise of 2 µV, and 92-dB PSRR, providing excellent rejection of power supply noise in wireless handsets.
The advanced accessory detection algorithm automatically detects six supported accessories and enables or disables internal components.
要求更多資訊
PurePath™ Console 2、TPA6166A2 GUI 和其他設計資源均可供使用。立即索取
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPA6166A2 3.5-mm Jack Detect and Headset Interface IC datasheet (Rev. B) | PDF | HTML | 2015年 1月 23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 | ||
| User guide | TPA6166A2 Audio Amplifier with Jack Detection | 2014年 3月 12日 | ||
| Application note | Reducing Crosstalk in Directpath Headphone Amplifiers | 2012年 3月 28日 | ||
| Application note | Ground Loop Break (GLB) Circuits | 2009年 10月 1日 | ||
| Application note | PowerWiseë Class G versus Class AB Headphone Amplifiers | 2009年 6月 11日 | ||
| Application note | A Low-Cost, Single Coupling Capacitor Config. for Stereo Headphone Amplifiers | 1999年 12月 22日 |
設計與開發
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PUREPATHCONSOLE — 適用於音訊系統設計和開發的 PurePath™ Console 圖形開發套件
PurePath Console’s (...)
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 引腳 | 下載 |
|---|---|---|
| DSBGA (YFF) | 25 | 檢視選項 |
訂購與品質
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