Cx31993 Datasheet Fix Hot [updated] Review

By addressing the thermal path and reducing unnecessary processing overhead, you can enjoy the incredible audio fidelity of the CX31993 without sacrificing the lifespan of the chip or burning your hands.

This is the most effective permanent fix for the "hot" issue.

The official Conexant (now Synaptics) CX31993 datasheet lists the chip as a "high-performance, low-power audio codec." The keyword is low power . The sheet claims a typical current consumption of for the digital-to-analog conversion. cx31993 datasheet fix hot

The Conexant (now Synaptics) CX31993 is one of the most popular USB-C DAC chips on the market. It powers countless budget audiophile dongles, delivering impressive 32-bit/384kHz audio at a fraction of the cost of high-end setups. However, many DIY builders, audio engineers, and everyday users notice a common issue:

Technically, yes, but it is unnecessary. The QFN package is designed to dissipate heat through the PCB ground plane. If the PCB is poorly designed without thermal vias, a heatsink will not help because the plastic/metal housing traps the air. Your best solution is to buy a dongle with a vented metal casing instead of resin. By addressing the thermal path and reducing unnecessary

The outer casing of the USB dongle exceeds 45°C (113°F). Hardware Fixes: Modifying the Circuit Design

Analysis of the CX31993 DAC Chip: Addressing the “Fix Hot” Phenomenon and Datasheet Gaps The sheet claims a typical current consumption of

Lower default sample rate to 24-bit/44.1kHz; enable USB Suspend. High bias current inside tiny enclosure