AK4395 Datasheet, PDF (1/26 Pages) Asahi Kasei Microsystems – ADVANCED MULTI-BIT 192KHZ 24-BIT DAC

ASAHI KASEI
[AK4395]
AK4395
Advanced Multi-Bit 192kHz 24-Bit ∆Σ DAC
GENERAL DESCRIPTION
The AK4395 is a high performance stereo DAC for the 192kHz sampling mode of DVD-Audio including a
24bit digital filter. The digital filter has high stopband attenuation with 110dB or more that reduces wide
band aliasing noise. The AK4395 introduces the advanced multi-bit system for ∆Σ modulator. This new
architecture achieves the wider dynamic range, while keeping much the same superior distortion
characteristics as conventional Single-Bit way. The analog outputs are filtered in the analog domain by
switched-capacitor filter (SCF) with high tolerance to clock jitter. The AK4395 also includes digital
volume, so the device is suitable for multi-channel audio system.
FEATURES
• 128x Oversampling
• Sampling Rate up to 192kHz
• High Performance 24Bit 8x Digital Filter (Slow Roll-off Option)
Ripple: ±0.0002dB, Attenuation: 110dB
• High Tolerance to Clock Jitter
• Low Distortion Differential Output
• Digital de-emphasis for 32, 44.1 & 48kHz sampling
• Channel Independent Digital Volume with Soft-transition
• Soft Mute
• THD+N: -100dB
• DR, S/N: 120dB
• I/F format:
MSB justified, 16/20/24bit LSB justified, I²S
• Master Clock: Normal Speed: 256fs, 384fs, 512fs or 768fs
Double Speed: 128fs, 192fs, 256fs or 384fs
Quad Speed: 128fs or 192fs
• Power Supply: 5V±5%
• TTL Level Digital I/F
• Small Package: 28pin VSOP
• Pin Compatible with AK4393/4
DIF0 DIF1 DIF2 DVDD DVSS
DEM0 DEM1 AVDD AVSS
LRCK
BICK
SDATA
SMUTE
PDN
CAD0
CAD1
Audio Data
Interface
De-emphasis
Control
De-emphasis
DATT, Soft Mute
De-emphasis
DATT, Soft Mute
8x
Interpolator
∆Σ
Modulator
8x
Interpolator
∆Σ
Modulator
SCF
SCF
Control Register
Clock Divider
BVSS
VCOM
DZFL
AOUTL+
AOUTL-
AOUTR+
AOUTR-
DZFR
MS0040-E-00
CSN CCLK CDTI P/S
MCLK
-1-
VREFH VREFL
2000/7