ASAHI KASEI
[AK4394]
AK4394
Advanced Multi-Bit 192kHz 24-Bit
DS
DAC
GENERAL DESCRIPTION
The AK4394 is a high performance stereo DAC for the 192kHz sampling mode of DVD-Audio including a
24bit digital filter. The AK4394 introduces the advanced multi-bit system for
DS
modulator. This new
architecture achieves the wider dynamic range, while keeping much the same superior distortion
characteristics as conventional Single-Bit way. In the AK4394, the analog outputs are filtered in the
analog domain by switched-capacitor filter(SCF) with high tolerance to clock jitter. The analog outputs
are full differential output, so the device is suitable for hi-end applications. The digital I/F can correspond
to TTL levels, so it is easy to I/F with 3.3V logic IC.
FEATURES
·
128x Oversampling
·
Sampling Rate up to 192kHz
·
24Bit 8x Digital Filter (Slow-roll-off option)
Ripple:
±0.005dB,
Attenuation: 75dB
·
High Tolerance to Clock Jitter
·
Low Distortion Differential Output
·
Digital de-emphasis for 32, 44.1, 48 & 96kHz sampling
·
Soft Mute
·
THD+N: -100dB
·
DR, S/N: 120dB
·
I/F format :
MSB justified, 16/20/24bit LSB justified, I
2
S
·
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
DIF0
DIF1
DIF2
DVDD
DVSS
DEM0
DEM1
AVDD AVSS
LRCK
BICK
SDATA
Audio Data
Interface
De-emphasis
Soft Mute
De-emphasis
Soft Mute
8x
Interpolator
8x
Interpolator
De-emphasis
Control
DS
Modulator
DS
Modulator
BVSS
VCOM
DZFL
AOUTL+
PDN
SMUTE
SCF
AOUTL-
AOUTR+
SCF
AOUTR-
DZFR
DFS0
Control Register
Clock Divider
CSN
CCLK
CDTI
P/S
MCLK
CKS0
CKS1
CKS2 VREFH VREFL
M0081-E-00
-1-
1999/11
AKM [ ASAHI KASEI MICROSYSTEMS ]
