ASAHI KASEI
[AK4520A]
AK4520A
100dB 20Bit Stereo ∆Σ ADC & DAC
General Description
The AK4520 is a stereo CMOS A/D & D/A converter for middle-range MD/DAT, Surround System and musical
instruments. Signal inputs and outputs are single-ended. The DAC outputs are analog filtered to remove out of
band noise. External components are minimized.
Features
∆Σ Stereo ADC
- 64x Oversampling
- S/(N+D): 90dB at 5V, 86dB at 3V
- Dynamic Range: 100dB at 5V, 96dB at 3V
- S/N: 100dB at 5V, 96dB at 3V
- Digital HPF for offset cancel
∆Σ Stereo DAC
- 128x Oversampling
- 2nd order SCF + 2nd order CTF
- Digital de-emphasis for 32kHz, 44.1kHz, 48kHz sampling
- S/(N+D): 90dB at 5V, 90dB at 3V
- Dynamic Range: 100dB at 5V, 96dB at 3V
- S/N: 100dB at 5V, 96dB at 3V
High Jitter Tolerance
Sample Rate Ranging from 16kHz to 54kHz
Master Clock: 256fs or 384fs
2.7 to 3.6V or 4.5 to 5.5V supply
Low Power Dissipation: 255mW
Small 28pin VSOP Package
0163-E-00
1997/3
-1-
