Dialog unveils a new open audio chip that can be combined with any audio codec to create high-end digital headphones and headsets, which offer truly immersive listening anywhere using built in audio processing and ambient noise control. Usecases include USB, Bluetooth and / or analog active headphones, USB and / or Bluetooth headsets, and position-aware applications (such as desk phones).
“Headsets based on the DA14195 will allow consumers using USB to connect at high speed to personal and online content libraries at data rates up to 480 Mbps. Additionally, the DA14195 is fully compatible with USB 3.0 type C, the next-generation smartphone and computing connectivity option.”
This end-to-end digital SoC, the DA14195, is an open audio platform combining extremely low power consumption with impressive processing performance in a small 0.4 mm pitch WLCSP package, as mentioned in the Press release.
High-end professional headset features of the chip include ambient and echo noise cancellation, virtual surround sound and voice control. The device supports up to 6 microphones for beam forming, enabling innovative position-aware applications.
The chip promises all the performance necessary for high-end headphones such as outstanding sound quality and ambient noise cancellation, using a 32-bit ARM Cortex-M0 MCU operating up to 165 MHz and C-programmable 32-bit Cadence (Tensilica) HiFi 3 DSP operating to 290 MHz. Moreover, the MCU speed can be scaled to further reduce power consumption while the DSP is supported by a wide range of 3rd-party audio algorithms.
An integrated step-down converter can be used to power the chip directly from USB, or by batteries ranging from 1.9 to 5 V. A high-precision fuel gauge maximizes battery lifetime and means users always know how much play time they have left.
The DA14195 uses a shared memory architecture comprising onboard cache, system RAM and DSP RAM. The MCU code and DSP code is stored in external QSPI Flash so memory size and cost can be tailored to the application.
The open audio chip can be combined with any audio codec including Dialog’s DA7217. This advanced codec includes a voice trigger function that can monitor for voice commands before waking up the DA14195 to start command interpretation.
Designers can create their own unique solutions using the modular and open software architecture of the chip which provides all necessary building blocks. Software is fully customisable and available as source code.
Samples of the new device are available in a tiny 81-ball, 0.4mm wafer-level chip-scale package (WLSCP). Production quantities will be available in the fourth quarter of this year.
For further details, view the full Press release.