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Audio > Audio D/A Converter
|32-bit Stereo D/A Converter with Headphone Amplifier
THD+N: -100dB, SNR: 109dB
Sampling Rate: 8 to 192kHz
As more consumers switch to wireless Bluetooth headphones, high-resolution audio transmission technology improves. With this trend, Asahi Kasei Microdevices Corporation, (AKM), has released the AK4331, a 32-bit stereo D/A converter, (DAC), with built-in headphone amplifier. It achieves high quality sound with low power consumption and long playback time. It uses half the power of the AK4375A, (released in 2014), which has been widely adopted in portable audio.
VELVET SOUND technology adopted for premium D/A converters for high-end audio equipment has been further optimized for portable devices. Newly developed low-power consumption technology has been implemented. Each circuit block such as the headphone amplifier or LDO maintains sound quality while reducing power consumption. The AK4331 achieves 4.4mW ultra-low power consumption, THD+N at -100dB, and 109dB SNR. Long playback time with Bluetooth headphones can be achieved.
The AK4331 integrates necessary functions such as a headphone amplifier, digital microphone input, and LDO, into a compact 36-pin CSP package. A jitter cleaner, (sample rate converter), which is effective under a jittery clock input environment is also included.
AK4331ECBAdvanced D/A Converter with Headphone Amplifier
|DAC|| Advanced 32-bit Stereo Audio D/A Converter
4 types of Digital Filter for Sound Color Selection
|Headphone Amplifier|| Ground-referenced Class-G Stereo Headphone Amplifier
|Sampling Rate||8 to 192kHz|
|Jitter Cleaner|| Available (with Asynchronous Sample Rate Converter / Crystal Oscillator / Low Jitter PLL)
|Digital Microphone Interface|| Available
|Microcomputer Interface||I2C (400kHz)|
|Power Consumption|| 4.4mW (fs=48kHz)
AVDD = CVDD = LVDD = 1.7 to 1.9V|
TVDD = 1.65 to 3.6V
|Operation Temperature Range||-40 to 85°C|
|Package|| 36-pin CSP (2.533 × 2.371mm, 0.4mm pitch)|