Cx31993 Datasheet ((new)) -

A: Yes. Despite the lack of official documentation, the CX31993 remains a highly competitive choice for entry-level to mid-range portable DAC products. Its proven track record, widespread adoption, excellent specifications, and low cost continue to make it attractive for volume manufacturing. However, for applications requiring DSD support, advanced filtering, or robust manufacturer support, alternative chips such as the Cirrus Logic CS43131 should be considered.

The CX31993 supports , which covers virtually all consumer high-resolution audio formats currently available. However, it is important to note that many product descriptions list additional format support (such as DSD) that may be implemented through software conversion (DoP) rather than native hardware decoding. The native hardware capabilities of the CX31993 are focused on PCM, which remains the most widely used format in the consumer audio space. cx31993 datasheet

| Parameter | Value / Specification | | :--- | :--- | | | USB Audio Codec (DAC + Headphone Amp) | | DAC Resolution | 32-bit | | Max PCM Sampling Rate | 384 kHz | | Signal-to-Noise Ratio (SNR) | > 128 dB | | Dynamic Range (DNR) | > 120 dB | | Total Harmonic Distortion + Noise (THD+N) | < 0.0003% | | Output Power | 65 mW @ 16Ω / 30 mW @ 32Ω | | Supported Headphone Impedance | 16Ω to 600Ω | | Output Voltage | 1Vrms (typical) | | Power Consumption | < 0.125W (approx.) | | Standby Power Consumption | ≤ 0.01W | | Interfaces | USB 2.0 (UAC 1.0/2.0), I2S, S/PDIF, I2C | | Audio Formats | PCM, DSD (DoP) | | EQ | 5-band Parametric EQ | | OS Compatibility | Windows, macOS, Linux, Android, iOS (Plug-and-Play) | | Package | QFN (Quad Flat No-leads) | A: Yes

[ USB-C Interface ] | | | VBUS D+ D- | | | v +----+---> [ CX31993 Audio SoC ] [ Ferrite ] | | | | | (VDD_A) v v | [Left Out] [Right Out] [Capacitors] | | | v v +--------------> [ 3.5mm TRRS Headphone Jack ] Power Supply Decoupling Place a 0.1 F ceramic capacitor directly adjacent to each VDD pin. The native hardware capabilities of the CX31993 are

Official datasheets typically include pinout diagrams, register maps, and thermal characteristics. For the CX31993, the core logic is contained in a QFN-16 or WLCSP package. Pin 1 is usually the VBUS detection (5V input), while Pins 7 & 8 handle the USB D+/D- differential pair.

In the world of smartphones and portable devices, the camera sensor often gets all the glory. However, tucked away on the motherboard is a component that is just as vital to the user experience: the Audio Codec. Among audiophiles and hardware engineers, the stands out as a significant player in the pursuit of "perfect sound" in a mobile form factor.

| Feature | CX31993 | Realtek ALC5686 | Realtek ALC4042 | | :--- | :--- | :--- | :--- | | | 384 kHz | 384 kHz | 96 kHz | | SNR | 124 dB | 120 dB | 104 dB | | THD+N | -93 dB | -95 dB | -85 dB | | Output Power (32Ω) | 30 mW | 33 mW | 40 mW | | DSD Support | DSD128 | DSD128 | No | | Typical Use | Mid-range dongles | High-end dongles | Budget dongles |