Audio Codec with Advanced Accessory Detect Evaluation Kit
The DA7219-EVAL evaluation board has been designed to allow measurement and functional testing of the DA7219 ultra-low power audio codec with advanced accessory...
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Overview
Description
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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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.
Features
- 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
Comparison
Applications
- Chromebooks
- Portable audio applications
- Tablets and eReaders
- Headphone accessories
- Remote controllers
- Gaming controllers
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 1.65 MB | |
| Application Note | PDF 2.12 MB | |
| Manual - Development Tools | 7Z 4.27 MB | |
| Schematic | ZIP 2.49 MB | |
| Product Brief | PDF 1.13 MB | |
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