AK4490EQ

120dB 768kHz/32-bit 2ch Premium DAC

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Description

Premium DACs AK4490EQ
VELVET SOUND
The AK4490EQ is a new generation of premium 32-bit DAC, with 2-channels of AKM’s VELVET SOUND architecture that has been widely adopted by well-established high-end audio companies. This technology realizes fine sound details with its low-distortion architecture in addition to 32-bit resolution digital filter processing. The digital input supports up to 768 kHz PCM and 11.2 MHz DSD (Direct Stream Digital), suitable for high-resolution audio source playback. Five digital filters are integrated into the DAC realizing simple and flexible sound making it ideal for in wide range of applications. The AK4490EQ is suitable for high-resolution sound source playback such as for network audio, USB DACs and car audio systems.

AK4490EQ

Premium DAC AK4490EQ

● Dynamic sound play back with large amount of playback information:

- AKMs VELVET SOUND architecture is utilized.
- Low-distortion technology achieves industry’s best performance of -112dB as a DAC with 120dB S/N characteristic.
- OSRD (Over Sampling Ratio Doubler) technology greatly reduces out of band noise.
- IRD (Impulse Response Designed) filters are integrated with 32-bit processing to reproduces detailed natural sound.
- Five different digital filters types are selectable according to the user audio and system preferences.


● Supporting High Resolution Data

- The digital input supports up to 768 kHz PCM and 11.2 MHz DSD (Direct Stream Digital), recreating high-resolution sound that is as close as possible to the original acoustic source.
- It is suitable for high-resolution sound source playback that is becoming popular with Network Audio, USB DACs and Car Audio Systems.


● Application

AV Receivers, CD/SACD Players, Network Audio, USB DACs, USB Headphones, Sound Plate/Bars, Car Audio, External Amplifiers for Car Audio, Measurement Equipment, Control Systems, Public Audio (PA), Smart Cellular Phones, IC-Recorders, Bluetooth Headphones and HD Audio/Voice Conference Systems

Key Features

ProductsAK4493EQAK4493EQ
High-end
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AK4490EQAK4490EQ
High-end
Premium D/A Converter
● DR, S/N123dB120dB
● THD+N-113dB-112dB
● Sampling Rate8kHz to 768kHz30kHz to 768kHz
● DSD Input22.4MHz11.2MHz
● Sound Color FilterSix Types
32-bit 8-fold Digital Filters
 - Short Delay Sharp Roll-off, GD=6.25/fs
 - Short Delay Slow Roll-off, GD=5.3/fs
 - Sharp Roll-off
 - Slow Roll-off
 - Super Slow Roll-off
 - Low-dispersion Short Delay
Five Types
32-bit 8-fold Digital Filters
 - Short Delay Sharp Roll-off, GD=6.25/fs
 - Short Delay Slow Roll-off, GD=5.3/fs
 - Sharp Roll-off
 - Slow Roll-off
 - Super Slow Roll-off
● Resolution32-bit
● Number of channel2ch
● Output MethodFull Differential Output
● VELVET SOUND
Technology
・Low-distortion technology
・OSRD technology
・Dedicated LSI Process for Premium Audio
・Low-distortion technology
・OSRD technology
● Power Consumption203mW145mW
● Power SupplyTVDD=AVDD=3.0 to 3.6V (LDO use)
VDDL/R=4.75 to 5.25V
DVDD=AVDD=3.0 to 3.6V
VDDL/R=4.75 to 7.2V
● Operation
Temperature
-40 to 85°C
● Package48-pin LQFP (7mm x 7mm)
● Sales StartJan. 2018Available Now
● StatusRND*NRND*
● SamplesDistributors/ Representatives
[Notes] * RND: Recommend for New Design * NRND: Not Recommend for New Design

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