AK4490EQ Datasheet, PDF (1/68 Pages) Asahi Kasei Microsystems – Premium 32-Bit 2ch DAC

[AK4490]
AK4490
Premium 32-Bit 2ch DAC
1. General Description
AK4490 is a new generation Premium 32-bit 2ch DAC with new technologies, achieving industry’s leading
level low distortion characteristics and wide dynamic range. The AK4490 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 AK4490 has five
types of 32-bit digital filters, realizing simple and flexible sound tuning in wide range of applications. The
AK4490 accepts up to 768kHz PCM data and 11.2MHz 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, Car Audios, Automotive External Amplifiers, Measurement Equipment, Control
Systems, Public Audios (PA), Smart Cellular Phones, IC-Recorders, Bluetooth Headphones, HD
Audio/Voice Conference Systems
2. Features
 256x Over sampling
 Sampling Rate: 30kHz  768kHz
 32-bit 8x Digital Filter
- Ripple: 0.005dB, Attenuation: 100dB
- 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
 High Tolerance to Clock Jitter
 Low Distortion Differential Output
 2.8MHz, 5.6MHz and 11.2MHz DSD Input Support
- Filter (fc=50kHz, fc=150kHz, 2.8MHz mode)
 Digital De-emphasis for 32, 44.1, 48kHz sampling
 Soft Mute
 Digital Attenuator (255 levels and 0.5dB step)
 Mono Mode
 External Digital Filter Mode
 THD+N: -112dB
 DR, S/N: 120dB (Mono mode: 123dB)
 I/F Format: 24/32bit MSB justified, 16/20/24/32bit LSB justified, I²S, DSD
 Master Clock:
30kHz ~ 32kHz: 1152fs
30kHz ~ 54kHz: 512fs or 768fs
30kHz ~ 108kHz: 256fs or 384fs
108kHz ~ 216kHz: 128fs or 192fs
~ 384kHz: 64fs or 128fs
~ 768kHz: 64fs
 Power Supply: DVDD=AVDD=3.0  3.6V, VDD1/2=4.75  7.2V
 Digital Input Level: CMOS
 Package: 48-pin LQFP
MS1648-E-03
-1-
2014/11