Harman Kardon AVR235 Service Manual page 78

AVR235
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
music instrument and AV receiver.
AINR
VCOM
GENERAL DESCRIPTION
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
Audio Interface: Master or Slave Mode selectable
Input level: TTL/CMOS selectable
Output format: 24bit MSB justified / I
Power Supply:
Ta = -40 ∼ 85°C
Small 16pin TSSOP Package
AK5380 Pin-compatible
VA AGND
∆Σ
AINL
Modulator
∆Σ
Modulator
Voltage Reference
CKS0
CKS2 CKS1
= Preliminary =
2
S) and can correspond to many systems like
FEATURES
(∼ 96kHz)
2
S selectable
4.5 ∼ 5.5V (VA)
2.7 ∼ 5.5V (VD at 48kHz)
3.0 ∼ 5.5V (VD at 96kHz)
VD DGND
Decimation
Filter
Decimation
Filter
PDN
78
AK5381
24Bit 96kHz ∆Σ ADC
MCLK
Clock Divider
LRCK
SCLK
Serial I/O
SDTO
Interface
DIF
harman/kardon