ASAHI KASEI
[AK4352]
2V & Low Power Multi-Bit
∆Σ
DAC
AK4352
GENERAL DESCRIPTION
The AK4352 is an 18bit low voltage & power stereo DAC for digital audio system. The AK4352 uses the
new developed Multi-Bit
∆Σ
architecture, this new architecture achieves DR=94dB at low voltage
operation. The AK4352 includes post filter with single-ended output and does not need any external parts.
The AK4352 is suitable for the portable audio system like MD, etc as low power and small package.
FEATURES
•
Multi-Bit
∆Σ
DAC
•
Sampling Rate Ranging: 8kHz
∼
50kHz
•
On chip post filter
•
On chip Buffer with Single-ended Output
•
On chip Perfect filtering 8 times FIR interpolator
Passband: 20kHz
Passband Ripple:
±
0.06dB
Stopband Attenuation: 43dB
•
Digital Audio I/F format: 2’s compliment, MSB first
18bit MSB justified, 16/18bit LSB justified, I
2
S
•
Digital de-emphasis for 44.1kHz sampling
•
Master clock: 256fs or 384fs
•
THD+N: -83dB@2V, -89dB@3V
•
D-Range: 94dB@2V, 96dB@3V
•
Output Voltage: 1.10Vpp@2V
•
Low Voltage Operation: 2V (1.8
∼
3.6V)
•
Low power Dissipation: 6mW@2V
•
Very Small Package: 16pin TSSOP
DIF0 DIF1
LRCK
BICK
SDATA
Serial Input
Interface
8X
Interpolator
8X
Interpolator
De-emphasis
Control
DEM
VCML
∆Σ
Modulator
∆Σ
Modulator
LPF
AOUTL
VDD
VSS
LPF
AOUTR
PD
Clock Divider
VCMR
MCLK
CKS
VREF
M0040-E-02
-1-
2000/11
AKM [ ASAHI KASEI MICROSYSTEMS ]
