If you are transitioning away from a device with a 3.5mm jack or simply want to squeeze better sound out of your IEMs, a
For consumers, devices powered by the CX31993 provide an affordable pathway to audibly transparent audio reproduction. Whether used as a simple USB-C to 3.5mm adapter or integrated into a more sophisticated portable DAC/amp, the CX31993 consistently delivers clean, accurate, and detailed sound that fully reveals the nuances of high-resolution recordings.
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.
Utilizes a charge-pump architecture to create a negative voltage rail internally. This allows the audio output to be biased at exactly 0V, removing the need for bulky, sound-degrading DC-blocking capacitors on the headphone outputs. 6. Hardware Implementation & Reference Design Guidelines
At the heart of the CX31993 is a high-performance 32-bit hardware decoding engine. It integrates an on-chip USB 2.0 controller, a high-resolution delta-sigma DAC, an integrated analog-to-digital converter (ADC) for microphone inputs, and a power-efficient headphone amplifier stage. Key Performance Parameters Audio Expansion Card - CX31993 Datasheet cx31993 datasheet
CX31993 USB Type C DAC Headphone Amp DAC Audio Decoding Cable Walmart - JMQT& more Go to product viewer dialog for this item. I can look for detailed comparisons between the Go to product viewer dialog for this item. and the ALC5686 DAC chips. Let me know which you'd prefer to explore next! Conexant (CX-Pro) CX31993 USB-C Amp/DAC Review
For its price, it provides a surprisingly wide soundstage. Users often note that instrument separation is much better than standard built-in phone jacks [2, 23].
Sourcing the CX31993 is primarily done through authorized distributors such as LCSC, or via wholesale platforms like Taobao for small-to-medium volumes. Since the manufacturer does not publish a public price list (MoQ required), end-users most often encounter the chip through the wide array of finished consumer products that feature it. For a complete USB-C DAC dongle, the final product can cost as little as on Aliexpress. A popular pairing is the CX31993 with a MAX97220 amplifier , available as a finished DAC adapter on e-commerce sites like Amazon for approximately $14.94 (KRW) to $48.50. A standalone DAC using the CX31993 is available from online retailers for around ₩11,140 (approx. $8.50 USD) .
USB PHY → USB Audio Controller → DSP (optional equalizer, bass boost) → DAC → HP Amp → 3.5mm jack. If you are transitioning away from a device with a 3
Thanks to its high SNR, it’s a perfect match for sensitive In-Ear Monitors (IEMs) that often pick up "static" or hiss from lower-quality sources [14]. ⚠️ What to Keep in Mind
If you want, I can: provide a summarized register map example, an example minimal schematic for a single composite input to CX31993, or extract exact electrical specs (supply currents, voltage levels, pinout) if you give permission to fetch the official datasheet.
Pin 1: VBUS (5V input) Pin 2: GND (Power ground) Pin 3: HP_DET (Headphone detection – detects 3.5mm insertion) Pin 4: MIC_BIAS (Provides 1.8V for electret microphone) Pin 5: MIC_IN (Mono microphone input from TRRS sleeve) Pin 6: AGND (Analog ground) Pin 7: HPOUT_R (Right channel output) Pin 8: HPOUT_L (Left channel output) Pin 9: VCOM (Common mode voltage reference – decoupling cap required) Pin 10: DVDD (Digital core voltage – 1.2V regulated internally) Pin 11: USB_DM (USB Data Minus) Pin 12: USB_DP (USB Data Plus) Pin 13: XTAL_IN (24MHz crystal input) Pin 14: XTAL_OUT (24MHz crystal output) Pin 15: RST_N (Reset – active low) Pin 16: VDDIO (I/O voltage – 3.3V)
This article serves as a comprehensive overview of the CX31993 DAC chip, covering its technical specifications, performance characteristics, and typical applications. 1. Overview of the CX31993 DAC Chip Conexant CX31993 Elara scrambled to adjust her filters, realizing the
Based on available technical specifications for the CX31993 USB-C DAC chip
Typically delivers around 65mW into 32Ω. Some implementations, like those paired with a MAX97220 amplifier chip, can reach approximately 60mW @ 22Ω . Performance & Features
Because of its high integration, the CX31993 requires very few external components, making it ideal for:
Users frequently report a noticeable boost in clarity for mids and highs compared to standard phone outputs, with more "existent" bass.