In your operating system settings (Windows Sound Control Panel or Android Audio Player apps like UAPP), cap the default output format to 24-bit/96kHz. This reduces CPU cycles on the DAC chip and lowers heat output without any perceivable loss in audio quality. 2. Adjust Clock Gating and Power States via EEPROM
Before fixing thermal issues, it helps to understand what the chip is doing under the hood. The
Do this if the chip runs hot even with fixes A & B applied.
Verify that all external components (resistors, capacitors, inductors) are within their specified tolerances and are correctly soldered.
If your CX31993 dongle is becoming uncomfortably hot or producing static, try these common community-vetted solutions: Is it normal for a May DAC to run hot? - Facebook
Integrated 32-bit/384kHz DAC and Class G headphone amplifier.
The Conexant CX31993 has become the industry's go-to solution for portable, high-resolution USB audio. As the successor to the CX21988, this chip is not just an incremental update but a significant leap forward, designed to bring studio-quality sound to everyday mobile devices. To understand any thermal issues, we must first look at what the chip claims to do.
If your chip is hot despite doing everything right electrically, you need to implement a . This is where the "modding" community shines.
The CX31993 datasheet outlines specific registers for power management, including aggressive clock gating for unused blocks. If the firmware leaves the ADC (microphone input) or the digital EQ blocks active while only playing music, power is wasted.
Instead of modifying the dongle (which is impractical), . The goal is to reintroduce a gentle low-pass filter and impedance matching. Apply one of these two verified solutions:
The Conexant CX31993 has become a darling in the portable audio world. Found in countless ultra-compact USB-C to 3.5mm dongle DACs (often labeled as "Hi-Res Audio" or "32bit/384kHz"), this chip offers impressive specs for its size and price. It supports PCM up to 384kHz and has a built-in headphone amplifier capable of driving many IEMs and headphones.
Updated: Cx31993 Datasheet Fix Hot
In your operating system settings (Windows Sound Control Panel or Android Audio Player apps like UAPP), cap the default output format to 24-bit/96kHz. This reduces CPU cycles on the DAC chip and lowers heat output without any perceivable loss in audio quality. 2. Adjust Clock Gating and Power States via EEPROM
Before fixing thermal issues, it helps to understand what the chip is doing under the hood. The
Do this if the chip runs hot even with fixes A & B applied. cx31993 datasheet fix hot
Verify that all external components (resistors, capacitors, inductors) are within their specified tolerances and are correctly soldered.
If your CX31993 dongle is becoming uncomfortably hot or producing static, try these common community-vetted solutions: Is it normal for a May DAC to run hot? - Facebook In your operating system settings (Windows Sound Control
Integrated 32-bit/384kHz DAC and Class G headphone amplifier.
The Conexant CX31993 has become the industry's go-to solution for portable, high-resolution USB audio. As the successor to the CX21988, this chip is not just an incremental update but a significant leap forward, designed to bring studio-quality sound to everyday mobile devices. To understand any thermal issues, we must first look at what the chip claims to do. Adjust Clock Gating and Power States via EEPROM
If your chip is hot despite doing everything right electrically, you need to implement a . This is where the "modding" community shines.
The CX31993 datasheet outlines specific registers for power management, including aggressive clock gating for unused blocks. If the firmware leaves the ADC (microphone input) or the digital EQ blocks active while only playing music, power is wasted.
Instead of modifying the dongle (which is impractical), . The goal is to reintroduce a gentle low-pass filter and impedance matching. Apply one of these two verified solutions:
The Conexant CX31993 has become a darling in the portable audio world. Found in countless ultra-compact USB-C to 3.5mm dongle DACs (often labeled as "Hi-Res Audio" or "32bit/384kHz"), this chip offers impressive specs for its size and price. It supports PCM up to 384kHz and has a built-in headphone amplifier capable of driving many IEMs and headphones.
