120dB 768kHz/32-bit 2ch Premium DAC for portable audio devices
|The AK4490EN inherits high quality sound technologies of the AK4490EQ that has been adopted by many audio products since it was launched in 2014. Downsizing the package and supporting a 1.8 V digital interface, the AK4490EN is ideal for portable applications. It supports high resolution sound sources as a digital input and up to 768 kHz PCM and 11.2 MHz DSD (Direct Stream Digital) data.|
● Optimized for Portable Applications
The AK4490EN is the first device with a QFN package (6mm□) in VERITA series, drastically downsized from the AK4490EQ (9mm□).
It supports a 1.8 V digital interface in addition to conventional 3.3 V digital interface, corresponding to various systems including portable applications.
● High Quality Sound Equal to The AK4490EQ with “VELVET SOUND” Technology.
The AK4490EN achieves -112 dB THD+N, the top level performance in the 120dB S/N class of DAC. This DAC reduces sound quality degradation caused by noise shaping realizing a flat noise floor up to 200 kHz with AKM’s original switched capacitor filter and OSR Doubler technology. In addition, 32-bit processing and L/R symmetrical layout also optimized for sound quality.
Five different 32-bit digital filter types are available: Short delay sharp roll-off and short delay slow roll-off filters have overall short delay characteristics. Sharp roll-off filter and slow roll-off filter preserve the phase difference and a new filter that has even slower roll-off character was added to these four filters. They are selectable according to the user audio and system preferences.
Portable Audio (Smartphones, Tablets, Portable Music Players)
Premium DAC VERITA AK4490EN