Cx31993 Datasheet Fix Hot Review

Measure voltage between VBUS (pin 1) and GND (pin 10). Also measure VDD_CORE (pin 11) if accessible.

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 cx31993 datasheet fix hot

The CX31993 is an excellent chip, but it requires respect for its thermal envelope. By combining (proper initialization), Hardware Fixes (thermal pads/heatsinks), and Diagnostics (checking load faults), you can absolutely fix the "hot" issue. Measure voltage between VBUS (pin 1) and GND (pin 10)

The datasheet suggests a properly designed PCB should dissipate heat efficiently. Yet, the "hot" issue suggests many OEM dongles are operating at 100°C+ , far exceeding specs. Users frequently report the DAC overheating and producing

Understanding the CX31993 Datasheet and Fixing Heating Issues