ASAHI KASEI [AK4525]
MS0053-E-00 2000/9
- 1 -
GENERAL DESCRIPTION
The AK4525 has a dynamic range of 100dB and is well-suited middle-range MD, surround system,
musical instruments and car audio. Analog inputs are full-differential with single-end capability. Analog
outputs are single-ended. The AK4525 has X’ tal oscillation circuit and master mode.
FEATURES
o ∆Σ Stereo ADC
- 64x Oversampling
- Sample Rate Ranging from 32kHz to 48kHz
- S/(N+D): 92dB
- Dynamic range, S/N: 100dB
- Digital HPF for offset cancellation
o ∆Σ Stereo DAC
- 128x Oversampling
- Sampling Rate Ranging from 32kHz 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 X’ tal Oscillation circuit
o Master/Slave Mode
o Analog Power Supply: 4.5 to 5.5V, Digital Power Supply: 3.1 to 5.5V
VA AGND VD DGND CMODE
AINL+
AINL-
AINR+
AINR-
VREFH
VCOM
AOUTL
AOUTR
MCKO
LRCK
SCLK
SDTO
SDTI
DIF0
DIF1
SMUTE
DEM1DEM0
PDN
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
M/S
Gen & XTI
XTO
20Bit Stereo ∆Σ ADC & DAC with X’ tal Osc
AK4525