ASAHI KASEI [AK4523]
M0021-E-03 1999/12
- 1 -
GENERAL DESCRIPTION
The AK4523 has a dynamic range of 100dB and is well-suited middle-range MD, surround system,
musical instruments and car audio. Signal inputs and outputs are single-ended. The DAC outputs are
analog filtered to remove out of band noise. External components are minimized.
FEATURES
o DS Stereo ADC
- 64x Oversampling
- Sample Rate Ranging from 16kHz to 48kHz
- S/(N+D): 92dB
- Dynamic range, S/N: 100dB
- Digital HPF for offset cancellation
o DS Stereo DAC
- 128x Oversampling
- Sampling Rate Ranging from 16kHz to 48kHz
- 2nd order SCF + 2nd order CTF
- Digital de-emphasis for 32kHz, 44.1kHz, 48kHz sampling
- S/(N+D): 90dB
- Dynamic Range, S/N: 100dB
- Soft Mute
o High Jitter Tolerance
o Master Clock: 256fs, 384fs, 512fs
o Analog Power Supply: 4.5 to 5.5V, Digital Power Supply: 3.0 to 5.5V
VA AGND VD DGND CMODE
AINL+
AINL-
AINR+
AINR-
VREFH
VCOM
AOUTL
AOUTR
MCKI
LRCK
SCLK
SDTO
SDTI
DIF0
DIF1
SMUTE
DEM1DEM0
PD
Modulator
DS
Modulator
DS
Filter
Decimation
Filter
Decimation
HPF
HPF
Common Voltage
LPF
LPF
Modulator
DS
Modulator
DS
Interpolator
8x
Interpolator
8x
Serial I/O
Interface
Clock
Divider
20Bit Stereo DS ADC & DAC
AK4523