Product Descriptions

The CM3271 is the new generation ultra-low-powerUSB audio single chip designed especially for mobile USB-C headset, audio adapter or dock applications. It features cap-less/anti-pop headphone driver, combo-jack swap & jack-detection, Google buttonsdetection, embedded oscillator, flash, tri-color LED PWM driver, Digital EQ, DC-DC converter, etc., which can fulfill cost-effective, low-power, and versatile USB Type-C Audio accessories in a concise design for Android smartphones, tablets, Teams Headset ,New iPad Pro(2018), and PC. It also supports automatic power-down and active modes switch when the 3.5mm headset is unplugged or plugged-in to save the power consumption in USB-C audio adapter/dongle applications. Besides, it has Google headset 4-button in-line control detection and CTIA/OMTP typed headset/headphone auto switch. The integrated digital EQ and tri-color LED driver can bring more differentiation to the USB-C audio accessories. Up-to 

-96KHz/24bit codec support can facilitate Hi-Res Audio products.

Product Features

• Supports complete power management with auto power-down mode (no 3.5mm headset plug-in)

• Ultra-low-power consumption design with internal DC-DC converter (@USB5V) : 0A @ power-down; 18.7mA @standby; 22mA @active playback

• Accepts USB 5V or 3.3V power supply

• Embedded 8051 MCU with internal 512KB flash

• Embedded oscillator for Crystal-less design

• True Cap-less/zero-ground headphone driver with patent applied anti-pop technology

• Supports OMTP and CTIA 4-ring combo jack auto switch and jack detection

• Supports 4 in-line Google buttons headset detection

• Built-in 5-band parametric Equalizer for both playback and recording

• Integrated Tri-Color LED PWM driver

• 2-ch DACs w/ 96dB SNR; 1-ch ADC 90dB SNR

• Up to 96KHz/24bit Hi-Res playback or recording

• Built-in S/PDIF transmitter

• USB2.0 Full-Speed and USB Audio Device Class 1.0

• CM3271 Small QFN-48 package (5x5 mm)

  Specifications

Actual product photos

Product Data BOOk:

For more product information, please download the PDF

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

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