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AK5357

24Bit 96kHz ΔΣ ADC

Asahi Kasei Microdevices 

[AK5357]

AK5357

24Bit 96kHz ΔΣ ADC

GENERAL DESCRIPTION

The AK5357 is a stereo A/D Converter with wide sampling rate of 4kHz ∼ 96kHz and is suitable for

multimedia audio system. The AK5357 achieves high accuracy and low cost by using Enhanced dual bit

ΔΣ techniques. The AK5357 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 Karaoke, surround.

FEATURES

† Stereo ΔΣ ADC

† On-Chip Digital Anti-Alias Filtering

† Single-ended Input

† Digital HPF for DC-Offset cancel

† S/(N+D): 88dB@5V, 86dB@3V for 48kHz

† DR:

102dB@5V, 100dB@3V for 48kHz

† S/N:

102dB@5V, 100dB@3V for 48kHz

† Sampling Rate Ranging from 4kHz to 96kHz

† Master Clock:

256fs/384fs/512fs/768fs (4kHz ∼ 48kHz)

256fs/384fs

(48kHz ∼ 96kHz)

† Input level: TTL/CMOS selectable

† Master / Slave Mode

† Audio Interface: 24bit MSB justified / I2S selectable

† Power Supply: 2.7 ∼ 5.5V

† Ta = −20 ∼ 85°C (ET), −40 ∼ 85°C (VT), −40 ∼ 105°C (KT)

† Small 16pin TSSOP Package

† AK5381 Pin-compatible

VA AGND VD DGND

MCLK

AINL

AINR

VCOM

ΔΣ

Modulator

ΔΣ

Modulator

Voltage Reference

Decimation

Filter

Decimation

Filter

Clock Divider

Serial I/O

Interface

LRCK

SCLK

SDTO

CKS2 CKS1 CKS0

PDN

DIF

MS0294-E-03

-1-

2009/03

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