AK4490EN Datasheet, PDF(1/68 Page) Asahi Kasei Microsystems

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AK4490EN Datasheet, PDF (1/68 Pages) Asahi Kasei Microsystems – Premium 32-Bit 2ch DAC

[AK4490EN]

AK4490EN

Premium 32-Bit 2ch DAC

1. General Description

The AK4490EN is a new generation Premium 32-bit 2ch DAC with new technologies, achieving industryâs

leading level low distortion characteristics and wide dynamic range. The AK4490EN integrates a

newly developed switched capacitor filter âOSR Doublerâ, making it capable of supporting wide

range signals and achieving low out-of-band noise while realizing low power consumption. Moreover, the

AK4490EN has five types of 32-bit digital filters, realizing simple and flexible sound tuning in wide range

of applications. The AK4490EN 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 and USB-DACs.

Application: AV Receivers, CD/SACD player, Network Audios, USB DACs, USB Headphones, Sound

Plates/Bars, Measurement Equipment, Control Systems, Public Audios (PA), Smart Cellular

Phones, IC-Recorders, Bluetooth Headphones, HD Audio/Voice Conference Systems

2. Features

ï· 256x Over sampling

ï· Sampling Rate: 30kHz ï¾ 768kHz

ï· 32-bit 8x Digital Filter

- Ripple: ï±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

ï· High Tolerance to Clock Jitter

ï· Low Distortion Differential Output

ï· 2.8MHz, 5.6MHz and 11.2MHz DSD Input Support

- Filter (fc=50kHz, fc=150kHz, 2.8MHz mode)

ï· Digital De-emphasis for 32, 44.1, 48kHz sampling

ï· Soft Mute

ï· Digital Attenuator (255 levels and 0.5dB step + Mute)

ï· Mono Mode

ï· External Digital Filter Mode

ï· THD+N: -112dB

ï· DR, S/N: 120dB (Mono mode: 123dB)

ï· I/F Format: 24/32bit MSB justified, 16/20/24/32bit LSB justified, I2S, DSD

ï· Master Clock:

30kHz ~ 32kHz: 256fs, 384fs, 512fs, 768fs, 1024fs or 1152fs

30kHz ~ 54kHz: 256fs, 384fs, 512fs or 768fs

30kHz ~ 96kHz: 256fs, 384fs or 512fs

30kHz ~ 108kHz: 256fs or 384fs

108kHz ~ 192kHz: 128fs, 192fs or 256fs

108kHz ~ 216kHz: 128fs or 192fs

384kHz: 32fs, 48fs, 64fs or 96fs

768kHz: 16fs, 32fs, 48fs or 64fs

ï· Power Supply: DVDD=AVDD=3.0 ï¾ 3.6V, TVDD=1.6V ï¾ DVDD,

VDDL/R= VREFHL/VREFHR=4.75 ï¾ 5.25V

ï· Digital Input Level: CMOS

ï· Package: 48-pin QFN

015013666-E-01

-1-

2015/12

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