AK5381 Datasheet, PDF (1/20 Pages) Asahi Kasei Microsystems – 24Bit 96kHz ΔΣ ADC

ASAHI KASEI
[AK5381]
AK5381
24Bit 96kHz ∆Σ ADC
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
VA AGND VD DGND
MCLK
AINL
AINR
VCOM
∆Σ
Modulator
∆Σ
Modulator
Voltage Reference
Decimation
Filter
Decimation
Filter
Clock Divider
Serial I/O
Interface
LRCK
SCLK
SDTO
CKS2 CKS1 CKS0
PDN
DIF
MS0200-E-02
-1-
2006/01