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Based on various manufacturer datasheets and community testing, the CX31993 typically operates within the following parameters: Conexant CX31993 Decoding PCM 32-bit / 384kHz SNR >128dB (up to 117dB in some implementations) THD+N Output Power 65mW @ 32Ω (varies by implementation) Operating Voltage Approx. 5V (USB standard) Why Does the CX31993 Get Hot? cx31993 datasheet fix hot
The datasheet currently lacks a power derating graph. A new graph must be added indicating that maximum power dissipation must be reduced linearly above an ambient temperature of 50°C to prevent junction temperatures exceeding 125°C. Here is the relevant technical post content usually
The device now runs within the manufacturer’s intended thermal envelope. More importantly, audio quality improves: no more "glare" or "digital harshness" caused by the oscillation and thermal noise. A new graph must be added indicating that
Budget designs may lack proper heat dissipation (heatsinks or thermal pads), causing the zinc alloy or plastic shells to become hot to the touch during extended use.