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.
PurePath™ Console 2, TPA6166A2 GUI and other design resources are available. Request now
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPA6166A2 3.5-mm Jack Detect and Headset Interface IC datasheet (Rev. B) | PDF | HTML | 23 Jan 2015 |
| Application note | Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) | 26 Aug 2019 | ||
| Application note | AN-1849 An Audio Amplifier Power Supply Design (Rev. C) | 27 Jun 2019 | ||
| User guide | TPA6166A2 Audio Amplifier with Jack Detection | 12 Mar 2014 | ||
| Application note | Reducing Crosstalk in Directpath Headphone Amplifiers | 28 Mar 2012 | ||
| Application note | Ground Loop Break (GLB) Circuits | 01 Oct 2009 | ||
| Application note | PowerWiseë Class G versus Class AB Headphone Amplifiers | 11 Jun 2009 | ||
| Application note | A Low-Cost, Single Coupling Capacitor Config. for Stereo Headphone Amplifiers | 22 Dec 1999 |
For additional terms or required resources, click any title below to view the detail page where available.
PurePath™ Console is a highly integrated and easy-to-use audio development suite designed specifically to simplify the evaluation, configuration and debug process associated with the development of audio products. Watch how easy it is to use the PurePath™ Console 3 software.
PurePath Console’s (...)| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YFF) | 25 | Ultra Librarian |
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