Supports calls and line control functions (microphone input), making it ideal for headsets. Length: Commonly found in 130mm cable configurations. Why Choose the CX31993?
>128dB. This extremely high SNR indicates a very low noise floor, allowing for silent backgrounds in music. Dynamic Range (DNR): >120dB.
is a highly efficient, single-chip USB Type-C digital-to-analog converter (DAC) and headphone amplifier . This system-on-chip (SoC) has become a primary choice for audiophile dongles, ultra-portable amplifiers, and custom hardware integration. The device natively delivers combined with exceptionally low power draw. cx31993 datasheet
Connects directly to the USB-C port.
Disclaimer: This article is a synthesized technical resource compiled from public product specifications, technical analyses, and independent measurements. The CX31993 is a product of Conexant (now part of Synaptics). For official technical documentation or volume purchasing inquiries, please contact Synaptics or their authorized distributors directly. The specifications and information presented herein are believed to be accurate but should be independently verified for critical applications. >128dB
| Advantage | Description | | :--- | :--- | | | Flagship-level specifications (128dB SNR, 384kHz) at budget-friendly prices | | Driverless Operation | True plug-and-play across all major operating systems | | Extremely Low Power Consumption | Minimal impact on host device battery life | | Wide Headphone Compatibility | Drives everything from sensitive IEMs to 600Ω high-impedance headphones | | Built-in Microphone Support | Enables calls and voice applications | | No External Crystal Required | Simplifies design, reduces BOM cost, and improves reliability | | Excellent Measured Performance | Flat frequency response, low distortion, low crosstalk | | Widely Implemented and Tested | Proven in dozens of commercial products |
+-----------------------------------------------------------------+ | CONEXANT CX31993 SoC | | | | +------------------+ +------------------+ +----------+ | | | USB 2.0 PHY |<--->| Micro-programmed |<-->| Power | | | | (Type-C Native) | | Audio DSP Core | | Mgmt | | | +------------------+ +------------------+ +----------+ | | | | | +--------------------------+----------+ | | v v | | +------------------+ +--------------+ | | | Multi-bit Delta | | 24-bit Sigma | | | | Sigma Audio DAC | | Delta ADC | | | +------------------+ +--------------+ | | | ^ | | v | | | +------------------+ +--------------+ | | | Class G Stereo | | Microphone | | | | Headphone Amp | | Pre-Amp & | | | | (Capless Output) | | Jack Detect | | | +------------------+ +--------------+ | +---------|-------------------------------------|-----------------+ | | v (Left / Right Audio) ^ (Mic / Controls) +-----------------------------------------------------------------+ | 3.5mm TRRS Headphone Interface | +-----------------------------------------------------------------+ Key Functional Subsystems: 2. Output and Power
Supports DSD 64/128 (PCM), allowing for Native DSD playback. 2. Output and Power