Harman Kardon AVR 130, Service Manual

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ASAHI KASEI
AKM CONFIDENTIAL
[AK5381]
Rev.0.4 2002/08
- 1 -
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 =