Cx31993 Datasheet Fix Better

Since the manufacturer did not release a "fixed" datasheet, the open-source community (specifically developers working on the Linux Kernel sound/pci/hda tree) had to "fix" the implementation by guessing and testing.

Always buy the CX31993 from official Synaptics distributors (Mouser, DigiKey). Counterfeit chips often have broken I²C and higher clock jitter.

The Conexant (CX-Pro) CX31993 Go to product viewer dialog for this item.

The (also known as the Conexant CX Pro

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Where to find the ic datasheet and pinout details for SN8P2612? * Kisur Chandro Das ► Repair, Restore or Scrap it Audio and Video. Facebook·ChiFi Audio Reviews Audio Expansion Card - CX31993 Datasheet

Because the datasheet doesn't specify analog ground separation, cheap dongles create hiss when the laptop is charging. cx31993 datasheet fix better

Unlocking True Audio Potential: The CX31993 Datasheet, Common Issues, and How to Fix Them

has quickly established itself as the gold standard for budget-conscious audiophiles seeking premium performance. Acting as a staple in ultra-portable USB-C to 3.5mm DAC dongles like the JCALLY JM6E and Audiocular Beam , this tiny audio processing chip punches far above its weight class.

| Original issue | Corrected implementation | |----------------|--------------------------| | 1µF + 0.1µF decoupling | + add 1nF high-freq cap | | No I²C pull-ups | 2.2kΩ to 3.3V on SDA/SCL | | 32.768 kHz crystal | 12.5pF load + 15pF caps | | No output filter | 3rd-order LPF (22Ω/470pF/10Ω/1nF) | | Direct VBUS power | 5V → 3.3V LDO (e.g., TPS73633) | Since the manufacturer did not release a "fixed"

If you are trying to implement this chip or fix a driver:

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

The CX31993 is often paired with an independent amplifier chip, such as the The Conexant (CX-Pro) CX31993 Go to product viewer

On Windows, use Tidal or Foobar2000 with ASIO/WASAPI Exclusive mode to bypass Windows mixer.