Cx31993 Datasheet [verified] | EXCLUSIVE · Review |

Understanding the CX31993: High-Fidelity Audio in a Tiny Package

Supply Voltage

| Parameter | Typical Value | Relevance | |-----------|---------------|------------| | | 3.3V – 5V (from VBUS) | USB bus-powered; no external battery | | DAC Resolution | 32-bit | High-resolution audio support | | Sampling Rates | 44.1, 48, 88.2, 96, 176.4, 192 kHz | Covers standard to high-res | | Output Power | Up to 1.25Vrms (2Vrms with external boost) | Drives most IEMs and some headphones | | Headphone Impedance | 16Ω – 300Ω | Versatile load handling | | SNR (DAC) | >120 dB | Very low noise floor | | THD+N | <0.001% | Clean, distortion-free output | | Current Consumption | ~20 mA (active), <1 μA (standby) | Low power for mobile use | | Interface | I2S, TDM, PDM (digital mic input) | Flexible digital audio input | cx31993 datasheet

JCALLY JM6

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 . Understanding the CX31993: High-Fidelity Audio in a Tiny

Elias didn't mind the cold. He adjusted his thermals and clicked on his high-lumen work light, the beam cutting through the dusty gloom. He was a Restoration Tech, third class. His job was simple: go into the dead zones, find the pre-Collapse tech, and catalog it before it was melted down for scrap. Suddenly, a spike of 200kHz noise—the "Class D

• Integrated headphone detection
• Play/pause/volume control via inline 3-button headset (CTIA)
• Hardware volume mixing
• Noise gate and pop suppression

Suddenly, a spike of 200kHz noise—the "Class D ghost" mentioned in a late-century engineering forum —screeched through the line. Elara scrambled to adjust her filters, realizing the chip was more than just a DAC; it was a window.

Deep Dive: The CX31993 and the Science of Pristine Mobile Audio

A minimal working circuit includes: