AK4522 Datasheet, PDF (1/18 Pages) Asahi Kasei Microsystems – 20BIT STEREO ADC & DAC

ASAHI KASEI
[AK4522]
AK4522
20Bit Stereo ∆Σ ADC & DAC
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
∆Σ
Modulator
Decimation
Filter
HPF
∆Σ
Modulator
Decimation
Filter
HPF
Clock
Divider
MCKI
LRCK
SCLK
Common Voltage
Serial I/O
Interface
LPF
∆Σ
Modulator
8x
Interpolator
LPF
∆Σ
Modulator
8x
Interpolator
SDTO
SDTI
DIF0
DIF1
SMUTE
PD
DEM0 DEM1
M0020-E-01
-1-
1998/10