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AVD Module with Voice Data Stack

Voice Data Stack

Whether you’re developing audio-, voice- or data-based wireless applications, the DA14AVDDECT offers you the fastest and easiest route to market. It combines everything you need for world-class wireless performance in a single compact module.

Fully RF tested and certified, it doesn’t require any in-depth RF knowledge or resources to use. Just drop it in and you’re ready to go.

The Dialog DA14AVDDECT Audio Voice Data module is a complete solution for next-generation wireless applications. It contains all the hardware necessary, including a state-of-the-art DECT radio, a multi-core, power amplifier, stereo CODEC, battery management and onboard antenna. You can tailor the module to your target application area simply by downloading and installing one of our optimized software stacks who also supports over-the-air upgrades.

Differences between the Voice Data Stack (AVD Module) and the Cordless Voice Module (CVM)

  Voice Data Stack CVM
Data Rate 150kbit/s 54 kb/s
Number of PP in a conference 8s 4
Number of PP in PA/TG N/A N/A
Full Duplex / return channels 8 4
Voice/Audio Bandwidth 8kHz 8kHz
Codec G726, G722, BV32 G726, G722
Latency 10ms 10ms
Battery Charging NiMH / Li-Ion batteries 2 Cell NiMH
Available Interfaces UART (2), SPI, I2C, PCM/I2S, PDM, USB charging / FW, SE COdec, I/O UART, SPI, I2C, PCM, Single Ended / Differential Analog I/O


  • Next-generation DECT radio performance
    • Multi-level modulation
    • Zero blind slot support
  • Extensive processing power
  • Hi-Fi audio support
  • Integrated antenna and support for optional external antenna
  • Battery management with charger and fuel gauge
  • Choice of voice and data or audio and data software stacks


  • Conferencing systems
  • Intercom systems
    • Door entry
    • Elevator communication
    • Fire rescue communication
  • Elderly Care: pendants with voice


Product Briefs and Summaries


User guides and manuals