The CX31993 is built on a single-chip architecture and boasts an extremely simple peripheral circuit design. It can implement high-quality audio output with just a minimal number of passive components. In many commercial products, the CX31993 is paired with an external operational amplifier (op-amp), such as the MAX97220. This "dual-chip" configuration combines the DAC capabilities of the CX31993 with the high-power drive capability of the MAX97220, achieving a significant leap in sound quality and power output.
The CX31993 is recognized for delivering audiophile-grade performance within a standard bus-powered USB envelope. DAC Performance (Playback) 16-bit, 24-bit, 32-bit PCM Sampling Rates: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz, 384 kHz Signal-to-Noise Ratio (SNR): Up to 124 dB (A-weighted) Dynamic Range (DNR): 120 dB cx31993 datasheet
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. The CX31993 is built on a single-chip architecture