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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, I
2
S) 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
Output format: 24bit MSB justified / I
2
S 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
Small 16pin TSSOP Package
AK5380 Pin-compatible
∆Σ
Modulator
MCLK
AINL
LRCK
SCLK
SDTO
DIF
VCOM
Clock Divider
AINR
AGND
VA
Decimation
Filter
Serial I/O
Interface
Voltage Reference
CKS1
DGND
VD
CKS2
∆Σ
Modulator
Decimation
Filter
PDN
CKS0
24Bit 96kHz
∆Σ
ADC
AK5381
= Preliminary =
AVR235
harman/kardon
78
Содержание AVR 235
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