GENERAL DESCRIPTION

The AK4397 is a high performance premium 32bit DAC for the 192kHz sampling mode of DVD-Audio including a 32bit digital filter. Using AKMs multi bit architecture for its modulator the AK4397 delivers a wide dynamic range while preserving linearity for improved THD+N performance. The AK4397 has full differential SCF outputs, removing the need for AC coupling capacitors and increasing performance for systems with excessive clock jitter. The AK4397 accepts 192kHz PCM data and 1-bit DSD data, ideal for a wide range of applications including DVD-Audio and SACD. The AK4397 has a functional compatibility with the AK4393/4/5 and lower power dissipation.

FEATURES

? 128x Over sampling

? Sampling Rate: 30kHz ～ 216kHz

? 32Bit 8x Digital Filter (Slow-roll-off option) Ripple: ±0.005dB, Attenuation: 75dB

? High Tolerance to Clock Jitter

? Low Distortion Differential Output

? DSD data input available

? Digital De-emphasis for 32, 44.1, 48kHz sampling

? Soft Mute

? Digital Attenuator (Linear 256 steps)

? THD+N: ?103dB

? DR, S/N: 120dB

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

? Master Clock: Normal Speed: 256fs, 384fs, 512fs, 768fs or 1152fs Double Speed: 128fs, 192fs, 256fs or 384fs Quad Speed: 128fs or 192fs DSD: 512fs or 768fs

? Power Supply: 4.75 ～ 5.25V

? TTL Level Digital I/F

? Package: 44pin LQFP