ASAHI KASEI
[AK4317]
AK4317
18Bit SCF DAC with ATT & MIXER
General Description
The AK4317 is a 1bit stereo DAC with channel separated volume and channel mixer. This DAC also
includes 18bit digital filter and analog LPF. A 1bit DAC can achieve monotonicity and low distortion with
no adjustment and is superior to traditional R-2R ladder based DACs. In the AK4317, the loss of
accuracy from clock jitter is also improved by using SCF techniques for on-chip post filter. Therefore, the
AK4317 is suitable for the system like STB including PLL circuit.
Features
Sampling Rate Ranging from 8kHz to 50kHz
On chip Perfect filtering
•
8 times FIR Interpolator
•
2nd order SCF
•
2nd order CTF
Digital de-emphasis for 32, 44.1, 48kHz sampling
L/R Separated Volume
L/R Mixing
Soft Mute
Audio I/F format : MSB justified, LSB justified, I2S
Master Clock: 256fs or 384fs
High Tolerance to Clock Jitter
THD+N: -86dB
DR: 92dB
Power Supply:4.5 to 5.5V
Small Package: 24pin VSOP
AK4311 Compatible
0172-E-01
-1-
1997/5
AKM [ ASAHI KASEI MICROSYSTEMS ]
