AK4393_03 Datasheet, PDF (1/23 Pages) Asahi Kasei Microsystems – Advanced Multi-Bit 96kHz 24-Bit ΔΣ DAC

ASAHI KASEI
[AK4393]
AK4393
Advanced Multi-Bit 96kHz 24-Bit ∆Σ DAC
GENERAL DESCRIPTION
The AK4393 is a high performance stereo DAC for the 96kHz sampling mode of DAT, DVD including a
24bit digital filter. The AK4393 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. In the AK4393, 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 operating voltages support analog
5V and digital 3.3V, so it is easy to I/F with 3.3V logic IC.
FEATURES
• 128x Oversampling
• Sampling Rate up to 108kHz
• 24Bit 8x Digital Filter
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
• Power Supply: 4.75 to 5.25V (Analog), 3 to 5.25V (Digital)
• Small Package: 28pin VSOP
DIF0 DIF1 DIF2 DVDD DVSS
DEM0 DEM1 AVDD AVSS
LRCK
BICK
SDATA
PDN
SMUTE
DFS
Audio Data
Interface
De-emphasis
Control
De-emphasis
Soft Mute
De-emphasis
Soft Mute
8x
Interpolator
∆Σ
Modulator
8x
Interpolator
∆Σ
Modulator
SCF
SCF
Control Register
Clock Divider
BVSS
VCOM
AOUTL+
AOUTL-
AOUTR+
AOUTR-
CSN CCLK CDTI P/S MCLK CKS0 CKS1 CKS2 VREFH VREFL
M0039-E-02
-1-
2003/09