AK4394 Datasheet, PDF (1/26 Pages) Asahi Kasei Microsystems – ADVANCED MULTI-BIT 192KHZ 24-BIT DAC

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, 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
DIF0 DIF1 DIF2 DVDD DVSS
DEM0 DEM1 AVDD AVSS
LRCK
BICK
SDATA
PDN
SMUTE
DFS0
Audio Data
Interface
De-emphasis
Control
De-emphasis
Soft Mute
De-emphasis
Soft Mute
8x
Interpolator
DS
Modulator
8x
Interpolator
DS
Modulator
SCF
SCF
Control Register
Clock Divider
BVSS
VCOM
DZFL
AOUTL+
AOUTL-
AOUTR+
AOUTR-
DZFR
CSN CCLK CDTI P/S MCLK CKS0 CKS1 CKS2 VREFH VREFL
M0081-E-00
-1-
1999/11