Cx31993 Datasheet Fix Better Jun 2026

Very low Total Harmonic Distortion + Noise, ensuring an accurate, clean sound. 32-bit/384kHz: High-resolution support.

In 2012, developers analyzing the Windows drivers discovered that the CS420x family required specific coefficients to be written to Node 0x11 (the "secret" node) to toggle specific hardware features. For example, to fix the subwoofer output on a MacBook Pro, they found a bit had to be flipped in a coefficient that wasn't listed in any public PDF.

If you are integrating the chip into a custom build (like a Framework expansion card), you might notice high-frequency noise (above 200kHz).

The chip is efficient but requires quality power delivery to avoid noise. cx31993 datasheet fix better

: A small -2dB or -3dB dip in the 8kHz–10kHz range usually "fixes" the harshness.

The datasheet claims the DAC can drive 600Ω loads, but "driving" does not mean "controlling."

On Windows, use Tidal or Foobar2000 with ASIO/WASAPI Exclusive mode to bypass Windows mixer. Very low Total Harmonic Distortion + Noise, ensuring

perform "better" than its price point, you need to match it with the right equipment and software. I. Combine with the Right Amp (The 97220 Combo)

, a high-performance USB-C Digital-to-Analog Converter (DAC) chip widely used in ultra-portable audio dongles.

Download a bit-perfect media player like , Hiby Music , or Neutron Music Player . For example, to fix the subwoofer output on

If you’d like, I can draft a single-sheet consolidated “quick-start” datasheet or generate a lab bring-up checklist tailored to your board’s schematic and chosen clock/power topology.

What or device (Android, Windows, iOS) are you using it with?

The hiss is amplified circuit noise. This is almost always from the gain being too high for your IEMs—the dreaded "impedance mismatch".

The Conexant CX31993 is a high-performance USB-C DAC/Amp chip widely used in ultra-portable dongles (often branded as "CX-Pro" or "Abigail"). While it is praised for its high sampling rate and low cost, users often seek "fixes" for issues like high-frequency harshness or low driving power for demanding headphones. These specs are standard across most CX31993-based devices: Resolution: Up to 32-bit / 384kHz PCM. Signal-to-Noise Ratio (SNR): >128dB. Dynamic Range (DNR): >120dB.