Electronics Weekly Electronics Design & Components Tech News
Both CX20985 and CX20899 feature a built-in, four-conductor headset jack interface that supports headphone/headset auto detection, as well as auto-switching between OMTP and CTIA-style headsets without the need for external components.
Featuring a stereo 24bit DAC and ADC for music and voice communication applications, CX20985 supports sampling rates of up to 48kHz.
No external crystal is needed, and it integrates a capacitor-less headphone driver that eliminates AC coupling capacitors.
Sampling now, it will be available in 50pin QFN and 46pin WLCSP packages – the latter is tiny, and intended for USB headsets.
In production, CX20899 integrates a DSP for an audio and voice enhancement – algorithms include AEC, NR, programmable qualisation, DRC, microphone AGC, volume control and microphone boost.
As well as a capacitor-less headphone driver it has a single universal jack connection that supports headsets, headphones, external microphones, and line-in devices.
The chips are compliant with the USB-C standard as well as enterprise requirements for Skype for Business.
“The adoption of USB-C has been the fastest in the history of USB standards,” said the firm. “Much smaller than a standard USB-A connector, USB-C also beats previously released USB connectors in terms of power, bandwidth and data speeds. Featuring reversible plug orientation, it eliminates the need for multiple connectors by consolidating everything into one cable.”
Connexant is featuring the codecs at CES Asia this week in Shanghai.
