ASAHI KASEI [AK4522]
M0020-E-01 1998/10
- 1 -
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 VSOP package, which will reduce system space.
FEATURES
• ∆Σ 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
• ∆Σ 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 VSOP Package: 24pin VSOP
VA AGND VD DGND CMODE
AINL+
AINL-
AINR+
AINR-
VREFH
VCOM
AOUTL
AOUTR
MCKI
LRCK
SCLK
SDTO
SDTI
DIF0
DIF1
SMUTE
DEM1DEM0
PD
Modulator
∆Σ
Modulator
∆Σ
Filter
Decimation
Filter
Decimation
HPF
HPF
Common Voltage
LPF
LPF
Modulator
∆Σ
Modulator
∆Σ
Interpolator
8x
Interpolator
8x
Serial I/O
Interface
Clock
Divider
20Bit Stereo ∆Σ ADC & DAC
AK4522