概要

説明

The DA7219 is an ultra-low power audio codec with Advanced Accessory Detection (AAD), which supports sample rates up to 96kHz at 24-bit resolution. It contains a mono microphone to Analog-to-Digital Converter (ADC) path and a stereo Digital-to-Analog Converter (DAC) to headphone (HP) path. AAD supports the detection and identification of 3-pole (headphone) and 4-pole (headset) jacks and allows the automatic pin order switching of MIC/GND on CTIA or OMTP headsets. It also supports automatic multiple button detection.

Benefits

  • GND/MIC polarity switch and multiple button detection for CTIA/OMTP audio jacks
  • 7.5mm2 package footprint enabling PCB space savings in area constrained applications
  • Capless headphone driver eliminates large AC coupling capacitors
  • Optimized ball-out conducive for low cost PCB manufacturing

Advanced Accessory Detection (AAD)

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Advanced Accessory Detection

The AAD will detect a jack insertion/removal, detect the polarity of the jack (CTIA/OMTP), and will support the detection of impedance based buttons in parallel with the connected accessory microphone.

特長

  • Android Wired Headset v1.1 compliant
  • High-performance mono microphone to ADC record path with 90dB SNR
  • ADC digital filters with Audio and Voice mode high-pass characteristics
  • Low noise microphone bias regulator with programmable output
  • High-performance stereo DAC to headphone playback path with 100dB SNR
  • DAC digital filters with Audio and Voice mode high-pass cutoff and 5-band equalizer
  • Advanced Accessory Detect supports
    • 3 and 4-pole jack detection
    • MIC/GND polarity switching (OMTP/CTIA jack types)
    • Multiple button detection
    • Headphone impedance testing
  • Microphone input with automatic level control
  • Digital sidetone path with gain
  • Digital tone generator
  • System controller for simplified pop-free startup and shut-down
  • Mixed sample rates of 24kHz ADC, 48kHz DAC supported from a single digital interface
  • Sample rates of up to 96kHz at 24-bit resolution
  • Shut-down mode for very low current consumption during standby
  • Phase-locked loop with WCLK tracking to generate system clock
  • 4-wire digital audio interface with support for I2S, TDM and other audio formats
  • 2-wire I2C compatible interface with support for High Speed mode up to 3.4MHz
  • 4.5mm x 1.6mm WLCSP RouteEasy™ package for low cost PCB manufacture

製品比較

アプリケーション

アプリケーション

  • Chromebooks
  • Portable audio applications
  • Tablets and eReaders
  • Headphone accessories
  • Remote controllers
  • Gaming controllers

ドキュメント

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データシート PDF 1.65 MB
アプリケーションノート PDF 2.12 MB
マニュアル-開発ツール 7Z 4.27 MB
回路図 ZIP 2.49 MB
製品概要 PDF 1.13 MB
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