[AK4497]
AK4497
Quality Oriented 32-Bit 2ch DAC
1.
General Description
The AK4497 is a new generation Premium 32-bit 2ch DAC with VELVET SOUND
TM
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
2.
Features
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, I
2
S, 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
016003187-E-00
-1-
2016/05
AKM [ ASAHI KASEI MICROSYSTEMS ]
