Cx31993 Datasheet Fix Better [new] May 2026

| Feature | CX31993 (Fixed) | Apple A2049 (C100) | Realtek ALC5686 | | :--- | :--- | :--- | :--- | | | 32-bit | 24-bit | 32-bit | | Max Sample Rate | 384kHz | 48kHz (locked) | 384kHz | | Output Impedance | ~2Ω (very good) | ~0.9Ω (better) | ~10Ω (worse) | | Power Draw | 35mA (fixed) | 25mA | 45mA |

A properly fixed CX31993 beats the Apple dongle for high-res listening because the Apple dongle is hardware-capped to 48kHz on Android/Windows unless you use expensive apps. Conclusion: How to Find the "Unfindable" Datasheet While you cannot legally download the full CX31993 datasheet from Conexant, you can download the Linux kernel source code . The kernel driver ( sound/usb/quirks.c ) contains the reverse-engineered register map. This is your de facto datasheet. cx31993 datasheet fix better

However, if you have ever searched for a solution, you have likely hit a brick wall. Official datasheets are locked behind Conexant’s NDAs (Non-Disclosure Agreements), leaving firmware corrupted dongles, driver conflicts on Windows, and Android compatibility nightmares unresolved. | Feature | CX31993 (Fixed) | Apple A2049

The Conexant CX31993 has quietly become one of the most popular unsung heroes of the mobile audio world. Found in countless $5 to $15 USB-C to 3.5mm dongle DACs (Digital-to-Analog Converters), this tiny chip promises high-resolution audio up to 32-bit/384kHz. It competes directly with the Realtek ALC5686 and the Apple C100. This is your de facto datasheet