Cx31993 Datasheet Fix Hot Fix -
Playing high-bitrate files like DSD can push the DAC to temperatures around The "Fix" (Community-Sourced)
The CX31993 USB-C DAC is a high-performance, budget-friendly chip often paired with a MAX97220 amp to drive IEMs. Users frequently report the DAC overheating and producing static or noise, particularly on PCs, with troubleshooting tips including adjusting Windows audio settings to 24-bit/48kHz or increasing buffer sizes in apps like UAPP. More details on this DAC can be found at audioreviews.org audioreviews.org Conexant (CX-Pro) CX31993 USB-C Amp/DAC Review
The datasheet must list the thermal resistance for a "Low-K" board layout (minimal copper) rather than a "High-K" standard.
A thermal pad (1mm thick) or Arctic Silver thermal paste, and a small aluminum heatsink (e.g., Raspberry Pi heatsink). cx31993 datasheet fix hot
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Page 12 of the OEM design guide (leaked) explicitly states: "The exposed thermal pad (EPAD, Pin 0) MUST be soldered to a continuous ground plane with at least 6 thermal vias to the backside copper."
The (often branded by Conexant or Synaptics) is a popular budget USB-C DAC chip known for high-resolution audio (32-bit/384kHz) but frequently lacks an official, public datasheet. Users often report "hot" operating temperatures or overheating, especially when paired with an external amplifier like the MAX97220 . Playing high-bitrate files like DSD can push the
This information is for educational purposes only. Modifying your hardware may void its warranty. The author is not responsible for any damage resulting from the application of these techniques.
If you prefer not to crack open your hardware, you can reduce the thermal load on the CX31993 through software configurations:
Typically, a datasheet for an IC like the CX31993 would include: A thermal pad (1mm thick) or Arctic Silver
The CX31993 is a popular, low-cost USB audio codec chip commonly found in portable USB-C to 3.5mm dongle DACs. Users and hardware reviewers have consistently reported a issue—where the chip or the dongle body becomes uncomfortably warm to the touch during normal operation, sometimes leading to audible distortion or shutdown. This report examines the root causes of this thermal problem and the critical missing information in public CX31993 datasheets that would allow engineers to properly fix it.
: The ultra-compact aluminum shells of these dongles often lack sufficient surface area for heat dissipation. Practical Fixes for Overheating
Where to find the ic datasheet and pinout details for SN8P2612? * Kisur Chandro Das ► Repair, Restore or Scrap it Audio and Video. ChiFi Audio Reviews Audio Expansion Card - CX31993 Datasheet
The CX31993 is a highly integrated System-on-Chip (SoC). It packs a digital-to-analog converter (DAC), an analog-to-digital converter (ADC) for microphone input, a hardware EQ, and a headphone amplifier into a tiny QFN package.
