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