GENERAL DESCRIPTION

The AK5381 is a stereo A/D Converter with wide sampling rate of 4kHz ∼ 96kHz and is suitable for High-end audio system. The AK5381 achieves high accuracy and low cost by using Enhanced dual bit ∆Σ techniques. The AK5381 requires no external components because the analog inputs are single-ended. The audio interface has two formats (MSB justified, I2S) and can correspond to many systems like music instrument and AV receiver.

FEATURES

□ Stereo ∆Σ ADC

□ On-Chip Digital Anti-Alias Filtering

□ Single-ended Input

□ Digital HPF for DC-Offset cancel

□ S/(N+D): 96dB@5V for 48kHz

□ DR: 106dB@5V for 48kHz

□ S/N: 106dB@5V for 48kHz

□ Sampling Rate Ranging from 4kHz to 96kHz

□ Master Clock:

256fs/384fs/512fs/768fs (∼ 48kHz)

256fs/384fs (∼ 96kHz)

□ Audio Interface: Master or Slave Mode selectable

□ Input level: TTL/CMOS selectable

AK5381 does not support TTL level mode at fs=48kHz to 96kHz.

□ Output format: 24bit MSB justified / I2S selectable

□ Power Supply: 4.5 ∼ 5.5V (VA)

2.7 ∼ 5.5V (VD at 48kHz)

3.0 ∼ 5.5V (VD at 96kHz)

† □ Ta = −40 ∼ 85°C (VT), −20 ∼ 85°C (ET)

† □ Small 16pin TSSOP Package

† □ AK5380 Pin-compatible