ASAHI KASEI
[AK4522]
20Bit Stereo
ΔΣ
ADC & DAC
AK4522
GENERAL DESCRIPTION
The AK4522 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. The AK4522 is available
in a small 24pin SSOP package, which will reduce system space.
FEATURES
• ΔΣ
Stereo ADC
- 64x Oversampling
- Sampling Rate Ranging from 16kHz to 48kHz
- S/(N+D): 92dB
- Dynamic Range, S/N: 100dB
- Digital HPF for offset cancellation
• ΔΣ
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
•
High Jitter Tolerance
•
Master Clock: 256fs, 384fs, 512fs
•
Analog Power Supply: 4.5 to 5.5V, Digital Power Supply: 2.7 to 5.5V
•
Small SSOP Package: 24pin SSOP
VA
AINL+
AINL-
AINR+
AINR-
VREFH
VCOM
Common Voltage
LPF
ΔΣ
Modulator
ΔΣ
Modulator
8x
Interpolator
AGND
VD DGND
Decimation
Filter
CMODE
Clock
Divider
ΔΣ
Modulator
ΔΣ
Modulator
HPF
MCKI
LRCK
Decimation
Filter
HPF
SCLK
Serial I/O
Interface
SDTO
SDTI
DIF0
DIF1
SMUTE
AOUTL
AOUTR
LPF
8x
Interpolator
PD
DEM0 DEM1
M0020-E-02
-1-
2012/01
AKM [ ASAHI KASEI MICROSYSTEMS ]
