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To facilitate the evaluation and development of systems using the CX31993 IC, several evaluation boards are available. These boards provide a platform for testing and evaluating the IC, allowing designers to quickly assess its performance and capabilities.
The (frequently commercialized as the CX-Pro or CX31993 PRO) is a highly integrated, ultra-low-power USB Type-C digital audio System-on-Chip (SoC) . Combining a premium digital-to-analog converter (DAC), an analog-to-digital converter (ADC), an integrated headphone amplifier, and a micro-programmed Digital Signal Processor (DSP), this chip serves as the structural foundation for modern high-fidelity USB-C to 3.5mm dongles, custom audio expansion cards, and embedded portable electronics.
: 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
The USB DP and DM signal lines must be routed as a differential pair with a target impedance of 90 ohms. Keep trace lengths matched.
For engineers, the CX31993 datasheet specifies a compact form factor (usually a QFN package). Key pins include: Power delivery from the USB source. D+/D-: Differential data lines for USB communication. To facilitate the evaluation and development of systems
If you are a hardware engineer or a DIY enthusiast looking for the specifications, this article breaks down the technical architecture, electrical characteristics, and performance metrics of this popular chip. 1. Product Overview
It is renowned for bridging the gap between extreme portability and audiophile-grade audio specs, often appearing in budget USB-C "dongles". Detailed CX31993 Datasheet Specifications Keep trace lengths matched
It supports microphone input for calls and headset controls, which is frequently missing from more expensive, audio-only dongles. Summary of Technical Data Specification Chipset Conexant CX-Pro CX31993 SNR DNR THD+N Max Sample Rate 32Bit/384KHz DSD Support DSD 64/128 (PCM) Output Power Functions Audio + Mic + Controls Conclusion
The Conexant CX31993 is a powerhouse audio chip that has democratized high-resolution portable audio. Its compelling combination of makes it the de facto standard for budget-friendly Hi-Fi DACs.