Based on available technical specifications for the CX31993 USB-C DAC chip
: Supports in-line controls (play/pause/volume) and microphone input for calls, which is a significant advantage over some audiophile-only DACs. Common Implementations cx31993 datasheet
>128dB, ensuring a clean background free of "hiss." Dynamic Range (DNR): >120dB. Total Harmonic Distortion (THD+N): -95dB. Output Power: Typically around 65mW @ 32Ω. Based on available technical specifications for the CX31993
If you are looking up the datasheet because you are dealing with a Linux kernel or Android driver issue, you know that support is crucial. The CX31993 typically interfaces via I2S or PCM for audio data and I2C for control signals. Output Power: Typically around 65mW @ 32Ω
The full public datasheet for CX31993 is proprietary and not freely available. This guide is based on publicly disclosed specifications, application notes, and reverse-engineering from known products (e.g., Conexant/CX-Audio dongles). For register-level details, you must sign an NDA with the manufacturer.
If you are designing a mobile audio accessory or simply trying to understand the specs of your favorite portable DAC, this guide breaks down the essential technical details found in the CX31993 datasheet. 1. Overview of the CX31993
The CX31993 is a high-performance USB audio bridge with an integrated DAC and headphone amplifier. It is designed specifically for USB-C to 3.5mm adapters, mobile phones, and tablets. Its primary draw is the ability to deliver high-resolution audio (Hi-Res) with extremely low power consumption and a small physical footprint. Key Features: Up to 32-bit / 384kHz PCM. Interface: USB 2.0 High-Speed (Type-C compatible). SNR (Signal-to-Noise Ratio): ~128dB (A-weighted). Dynamic Range: ~120dB. THD+N: -95dB @ 32 ohms. Power Consumption: < 50mW (active). 2. Technical Specifications (Datasheet Summary) Audio Performance