ASAHI KASEI

[AK5383]

M0049-E-03

2000/4

- 1 -

GENERAL DESCRIPTION

The AK5383 is a 24bit, 128x oversampling 2ch A/D Converter for professional digital audio systems. The

modulator in the AK5383 uses the new developed Enhanced Dual Bit architecture. This new architecture

achieves the wide dynamic range, while keeping much the same superior distortion characteristics as

conventional Single Bit way. The AK5383 performs 110dB dynamic range, so the device is suitable for

professional studio equipment such as digital mixer, digital VTR etc.

FEATURES

p Enhanced Dual Bit ADC

p Sampling Rate: 1kHz~108kHz

p Full Differential Inputs

p S/(N+D): 103dB

p DR: 110dB

p S/N: 110dB

p High Performance Linear Phase Digital Anti-Alias filter

• Passband: 0~21.768kHz(@fs=48kHz)

• Ripple: 0.001dB

• Stopband: 110dB

p Digital HPF & Offset Calibration for Offset Cancel

p Power Supply: 5V±5%(Analog), 3~5.25V(Digital)

p Power Dissipation: 210mW

p Package: 28pin SOP, VSOP

p AK5393 Pin compatible

LRCK

VREFL

GNDL

SCLK

SMODE1

FSYNC

Serial Output

Interface

SMODE2

DGND

VA

AGND

BGND

CAL

RST

VD

Controller

SDATA

MCLK

DFS

HPFE

ZCAL

AINR-

GNDR

Delta-Sigma

Modulator

Delta-Sigma

Modulator

Voltage

Reference

Voltage

Reference

Decimation

Filter

Decimation

Filter

HPF

HPF

Calibration

SRAM

VCOML

AINL+

AINL-

AINR+

VCOMR

VREFR

12

11

14

13

16

15

19

17

18

8

7

10

9

21

22

23

27

28

26

24

25

6

5

4

3

2

1

Enhanced Dual Bit

∆Σ 96kHz 24-Bit ADC

AK5383