The CX31993 is a high-performance, low-power audio codec chip. It is designed to act as the bridge between the digital brain of your device (the SoC/CPU) and the analog world of sound (microphones, speakers, and headphones).
The CX31993 is engineered to transition raw digital audio packets from a host processor over a USB bus into pristine analog signals capable of driving standard transducers. Simultaneously, its integrated ADC framework captures microphone line signals, packing them into digital frames back to the host.
While it runs cool, ensure the QFN thermal pad is properly soldered to a copper pour on the PCB. Conclusion cx31993 datasheet
The Conexant (Synaptics) CX31993 Go to product viewer dialog for this item.
The chip supports in-line controls (volume/play/pause) and microphone input for calls. The CX31993 is a high-performance, low-power audio codec
The CX31993 typically comes in a small package, making it ideal for the slim profiles of USB-C dongles.
provides an exceptionally quiet noise floor. In practical terms, this means that even when paired with sensitive In-Ear Monitors (IEMs), users typically hear no background hiss or static. This noise-free performance is often praised in reviews for budget devices, making it a "blackground" (dead silent) experience. While designed for portability, the Go to product viewer dialog for this item. offers surprising driving power, often quoted around offers surprising driving power
: Hardware level compliance allows immediate plug-and-play functionality across Android, Windows 10/11, macOS, and iOS (including iPhone 15/16 series) without proprietary driver packages.
CX31993 USB-C DAC Chip: The Ultimate Datasheet & Technical Overview