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AK4497, A New Flagship Premium D/A Converter has been developed enabling the Highest Sound Quality and Performance available from AKM.

2016-01-06 | Return

[Product Name]
VERITA AK4497EQ

[Title]
32bit Stereo Premium D/A Converter
DR, S/N: 128dB THD+N: -116dB
Sampling Rate: 8kHz~768kHz Supporting DSD 22.4MHz

[Application]
High-end Audio, Professional Audio, AV Receivers, CD/SACD Players, Network Audio, USB DAC’s

[Description]
The high-end audio market is being driven by the growing availability of high-resolution sound sources. Aasahi Kasei Microdevices Corporation (AKM) has developed a new 3rd generation flagship premium D/A converter, the VERITA AK4497. This is the new, higher performing solution of the VERITA AK4490 that is adopted by many audio products since it was launched in 2014.

The AK4497 is a new generation premium 32-bit DAC based on AKM’s VELVET SOUND architecture that has been widely adopted by well-established high-end audio companies. High signal to noise performance is achieved by improving VELVET SOUND technology by supporting a larger current drive capability. The performance of an audio DAC using switched capacitor is expanded to the limit with the AK4497. In addition, AKM has developed an original process that has greatly improved low noise performance and electric margin for audio devices, increasing data amount and enhancing original acoustic sound that can be found in the sound strength.

The AK4497 has been introduced in CES2016 that is held from 6th Jan. at Las Vegas, NV, USA.
Samples are available from Feb. 2016 and mass production will be available from the summer 2016.

● Dynamic Sound Playback with Large Amount of Playback Information: VELVET SOUND architecture is improved

Not only circuit designing but also the LSI manufacturing process was newly developed at AKM exclusively for AKM’s audio devices. The AK4497 is the first device to utilize this process in AKMs foundry. 32-bit processing is integrated for the IRD (Impulse Response Designed) Filter, reproducing a detailed and natural signal wave. A low-dispersion short delay filter was newly added to the other five filters found in our previous generation device. So, six different digital filter types are selectable according to the user audio and system preferences.

● AKM’s Best Performance D/A Converter
Low-distortion technology achieves industry’s best performance of -116dB THD+N DAC with 128dB S/N characteristic. The AK4497 has the best performance among AKM’s D/A converters. In addition, OSRD (Over Sampling Ratio Doubler) technology greatly reduces out of band noise.

● Supporting High Resolution Data
The first in the industry, a 22.4MHz DSD input is supported. The digital input supports up to 768 kHz PCM and 22.4 MHz DSD (Direct Stream Digital), recreating high-resolution sound that is as close as possible to the original acoustic source.

[Features]
● DR, S/N: 128dB (Mono mode: 131dB)
● THD+N: -116dB
● Sampling Rate: 8kHz ~ 768kHz
● DSD Input: 2.8MHz, 5.6MHz, 11.2MHz, 22.4MHz
● 32-bit Digital Filter (6 types)
● Low Distortion Full Differential Output
● Power Supply: Analog: 4.75 ~ 5.25V, Digital: 1.7 ~ 3.6V
● Operation Temperature Range: -40~85℃
● Package: 64-pin LQFP, 10 x 10 mm

>> To obtain more information about the AK4497, please visit here.

[Line-up]
● 3rd Generation 32-bit 2ch Premium D/A Converter

Product Name	VERITA AK4497EQ Flagship Premium D/A Converter	VERITA AK4490EQ High-end Premium D/A Converter	AK4452VN Premium D/A Converter
● DR, S/N	128dB (Mono mode: 131dB)	120dB (Mono mode: 123dB)	115dB
● THD+N	-116dB	-112dB	-107dB
● Sampling Rate	8kHz to 768kHz	30kHz to 768kHz	8kHz to 768kHz
● DSD Input	Max: 22.4MHz	Max: 11.2MHz
● Sound Color	Six 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
● Resolution	32bit
● Number of Channel	2ch
● Input Method	Full Differential Input
● VELVET SOUND Technology	Low-distortion technology OSRD (Over Sampling Ratio Doubler) technology
● Power Consumption	346mW	145mW	50mW
● Power Supply	Analog: 4.75 to 5.25V Digital: 1.7 to 3.6V	Analog: 4.75 to 5.25V Digital: 3.0 to 3.6V	Analog: 3.0 to 5.5V Digital: 1.7 to 3.6V
● Operation Temperature	-40~85°C	-40~85°C	-40~105°C
● Package	64-pin TQFP (10mm x 10mm)	48-pin LQFP (7mm x 7mm)	32-pin QFN (5mm x 5mm)
● Sales Start	ES: Feb/2016* Mass Production: Summer /2016*	Available Now	Available Now

Source：http://www.akm.com/