The chip is an "all-in-one" solution commonly found in budget audiophile "dongles" (USB-C to 3.5mm adapters) such as the or Abigail .
The CX31993 is —an exceptionally wide range that covers everything from sensitive in-ear monitors to high-impedance studio headphones. The output power specifications vary slightly depending on the implementation:
Supports up to 32-bit / 384kHz PCM audio.
>128dB, ensuring a clean background free of "hiss." Dynamic Range (DNR): >120dB. Total Harmonic Distortion (THD+N): -95dB. Output Power: Typically around 65mW @ 32Ω.
This technical article provides an in-depth breakdown of the CX31993 architecture, hardware specifications, pin configuration, and application circuits typically found in a standard manufacturer datasheet. 1. Executive Product Overview
The "story" of the CX31993 datasheet is essentially a saga of an elusive document that became a grail for the budget audiophile and DIY tech communities.
Based on the Conexant CX-Pro CX31993 review , this chip offers the best "bang for the buck."