Datasheet: Cx31993

Use a solid ground plane. Keep the analog ground (AGND) and digital ground (DGND) properly isolated to avoid digital "chirping" in the audio path.

While the full NDA-protected datasheet is restricted, publicly available specifications and reverse-engineered data reveal the following key parameters: cx31993 datasheet

While most modern tech components have easily accessible manuals, the CX31993—a high-performance Use a solid ground plane

: Plug-and-play compatibility with Android , iOS (USB-C iPads/iPhones) , Windows 10/11 , and macOS . | Parameter | Measured Value | | ---

| Parameter | Measured Value | | --- | --- | | Output Impedance | < 2 Ω | | Max Output (32Ω load) | 1 Vrms (~31 mW) | | Max Output (no load) | 2 Vrms | | SNR (A-wt) | 119 dB | | Crosstalk | -85 dB @ 1 kHz | | Frequency Response | ±0.1 dB (20 Hz – 20 kHz) | | Jitter (USB bus-powered) | < 50 ps RMS |

The testing station became a ritual. Every chip was run through the datasheet’s gauntlet: stress tests across temperature ranges, jitter measurements against the specified maximum, behavioral checks for spurious oscillation. Some chips failed, skewing like small, rusty rowboats. Some performed better than spec—lucky survivors after a decade in crates. For the glider, only a handful were needed; for funding and pride, they needed many more.