Cx31993 Datasheet Fix Hot

The CX31993 (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.

Equipment needed: Multimeter with thermocouple (or thermal camera), oscilloscope (optional but helpful), 16-32Ω headphones. cx31993 datasheet fix hot

Output Power: Typically 65mW (often limited by the specific dongle's power supply). Why Your CX31993 DAC Gets "Hot" The CX31993 (often branded by Conexant or Synaptics)

However, in application environments with ambient temperatures of 25°C, the device case temperature was frequently measured at 65°C to 75°C, indicating a temperature rise ($\Delta T$) of 40°C to 50°C. This discrepancy resulted in: oscilloscope (optional but helpful)