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Audio Codec with Advanced Accessory Detect
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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)
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
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
Applications
Applications
- Chromebooks
- Portable audio applications
- Tablets and eReaders
- Headphone accessories
- Remote controllers
- Gaming controllers
Design & Development
Software & Tools
Boards & Kits
Boards & Kits
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 detect.
All analog and digital audio functionalities are contained within the DA7219 evaluation board (EVB) as well as the control interface. The EVB can be controlled via a PC using the on-board USB microcontroller or from a host system via the provided headers.
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options