General Description
The AK4497 is a new generation Premium 32-bit 2ch DAC with VELVET SOUNDTM technology,
achieving industry’s leading level low distortion characteristics and wide dynamic range. The AK4497
integrates a newly developed switched capacitor filter “OSR Doubler”, making it capable of supporting
wide range signals and achieving low out-of-band noise while realizing low power consumption.
Moreover, the AK4497 has six types of 32-bit digital filters, realizing simple and flexible sound tuning in
wide range of applications. The AK4497 accepts up to 768kHz PCM data and 22.4MHz DSD data, ideal
for a high-resolution audio source playback that are becoming widespread in network audios,
USB-DACs and Car Audio Systems.

Application: AV Receivers, CD/SACD player, Network Audios, USB DACs, USB Headphones, Sound
Plates/Bars, Measurement Equipment, Control Systems, Public Audios (PA), IC-Recorders,
Bluetooth Headphones, HD Audio/Voice Conference Systems

 THD+N: -116dB
 DR, S/N: 131dB (2.6 Vrms Output)
128dB (2 Vrms Output)
 256 Times Over Sampling
 Sampling Rate: 8kHz  768kHz
 32-bit 8x Digital Filter
- Short Delay Sharp Roll-off, GD=6.0/fs,
Ripple: 0.005dB, Attenuation: 100dB
- Short Delay Slow Roll-off, GD=5.0/fs
- Sharp Roll-off
- Slow Roll-off
- Low-dispersion Short Delay Filter
- Super Slow Roll-off
 2.8MHz, 5.6MHz, 11.2MHz, 22.4MHz DSD Input Support
- Filter1 (fc=39kHz, 2.8MHz mode), Filter2 (fc=76kHz, 2.8MHz mode)
 Digital De-emphasis for 32, 44.1, 48kHz sampling
 Soft Mute
 Digital Attenuator (255 levels and 0.5dB step + mute)
 Mono Mode
 External Digital Filter Interface
 Audio I/F Format: 24/32 bit MSB justified, 16/20/24/32 bit LSB justified, I2S, DSD, TDM
 Master Clock
8kHz ~ 32kHz: 256fs or 384fs or 512fs or 768fs or 1152fs
8kHz ~ 54kHz: 256fs or 384fs or 512fs or 768fs
8kHz ~ 108kHz: 256fs or 384fs
108kHz ~ 216kHz: 128fs or 192fs
~ 384kHz: 32fs or 48fs or 64fs or 96fs
~ 768kHz: 16fs or 32fs or 48fs or 64fs
 Power Supply:
TVDD=AVDD= 3.0  3.6V (by Internal LDO), VDDL/R= 4.75 ~ 5.25V
TVDD=AVDD= 1.7  3.6V (by external supply), DVDD=1.7  1.98V,
VDDL/R= 4.75  5.25V
 Digital Input Level: CMOS
 Package: 64-pin TQFP