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Audio codec with Advanced Accessory Detect


Ultra low-power audio codec with AAD complaint to Android Wired Headset v1.1 specification

The DA7219 is an ultra low-power audio codec with Advanced Accessory Detection (AAD), which supports sample rates up to 96 kHz 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.

Lifecycle status

● Active

Advanced Accessory Detection (AAD)


The Advanced Accessory Detection (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.


Android Wired Headset v1.1 compliant

High performance mono microphone to ADC record path with 90 dB 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 100 dB 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 24 kHz ADC, 48 kHz DAC supported from a single digital interface

Sample rates of up to 96 kHz 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 3.4 MHz

4.5 mm x 1.6 mm WLCSP RouteEasy™ package for low cost PCB manufacture


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



Portable audio applications

Tablets and eReaders

Headphone accessories

Remote controllers

Gaming controllers

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Product Briefs and Summaries
Name Date Version
DA7219 Product Brief (1.13 MB)
Name Date Version
DA7219 Datasheet (1.67 MB)
Application notes
Name Date Version
DA7219 Application Note (884.71 KB)
Name Date Version
DA7219 PCB schematic layout and BOM (2.49 MB)
Software Resources
Name Date Version
DA7219 SmartCanvas GUI Software (60.35 MB) (Registered users only) 28/03/2018
User guides and manuals
Name Date Version
DA7219 Evaluation Board User Guides (3.45 MB)