While obtaining the full official datasheet may be challenging, the information synthesized here provides a practical and comprehensive reference for anyone looking to understand, evaluate, or design with the CX31993. Its proven architecture, ease of use, and strong performance have rightfully earned it a central position in the modern portable audio market.
CX31993 Datasheet: High-Resolution USB-C Audio Codec Specifications
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To fully appreciate the CX31993 datasheet, one must compare it to the market alternatives.
The chip is an "all-in-one" solution commonly found in budget audiophile "dongles" (USB-C to 3.5mm adapters) such as the or Abigail . cx31993 datasheet
Supports up to 32-bit/384kHz sampling rates.
Features full native support for USB Type-C configurations. It operates asynchronously to eliminate host clock jitter using internal phase-locked loops (PLLs).
Internal LDOs derive clean audio power rails from the 5V USB VBUS. 3. Electrical and Audio Performance Specifications
Exceeds 128dB , ensuring a remarkably clean "black" background [6, 11]. While obtaining the full official datasheet may be
Delivers crisp highs, full midrange, and tight, controlled bass. Power Capability: With approximately
Supports headset microphones and line controls. 2. CX31993 Technical Specifications (Datasheet Summary) Based on common implementations (such as the CX-Pro CX31993 ), here are the key technical parameters: Specification DAC Chip Conexant CX31993 Sampling Rate 32-bit/384kHz (PCM), 64/128 (DSD) Signal-to-Noise Ratio (SNR) Dynamic Range (DNR) Distortion (THD+N) 0.0003% / 95dB Output Power ~65mW (@ 32Ω load) Interface USB-C (Type-C) to 3.5mm Female Material Often 8-Strand Sterling Silver Cable 3. Performance & Sound Profile
The has rapidly become a staple in the world of portable audio. As a highly integrated USB Type-C digital-to-analog converter (DAC) SoC, it is the engine behind many of the high-performance "dongle DACs" that audiophiles use to bypass inferior smartphone audio circuitry.
When designing a PCB for the CX31993, engineers must adhere to strict layout practices to prevent digital switching noise from bleeding into the high-resolution analog output. If you'd like, I can: to other budget chips like the ALC5686
0.0003% (95dB). This represents minimal audio distortion and cleaner audio reproduction compared to standard device DACs.
Supports DSD 64/128 (PCM), allowing for Native DSD playback. 2. Output and Power
The CX31993 chip was originally developed by , a prominent American semiconductor company acquired by Synaptics . While an open, consumer-facing PDF datasheet is rarely listed on standard public aggregate repositories, the technical parameters are derived from Synaptics' industrial product distributions, reference hardware designs (such as the CX-Pro and JCALLY series), and developer documentation. Key Technical Specifications
: It supports high-resolution PCM files, allowing you to listen to "Master" quality tracks on streaming services like Tidal or Apple Music without downsampling. Low Power Consumption : Unlike some desktop-grade portable DACs, the CX31993 Go to product viewer dialog for this item.