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AK4385VT

108dB 192kHz 24-Bit 2ch ∆Σ DAC

Asahi Kasei Microdevices 

ASAHI KASEI

[AK4385]

AK4385

108dB 192kHz 24-Bit 2ch ∆Σ DAC

GENERAL DESCRIPTION

The AK4385 offers the perfect mix for cost and performance based audio systems. Using AKM's multi bit

architecture for its modulator the AK4385 delivers a wide dynamic range while preserving linearity for

improved THD+N performance. The AK4385 has full differential SCF outputs, removing the need for AC

coupling capacitors and increasing performance for systems with excessive clock jitter. The 24 Bit word

length and 192kHz sampling rate make this part ideal for a wide range of applications including

DVD-Audio. The AK4385 is offered in a space saving 16pin TSSOP package.

FEATURES

† Sampling Rate Ranging from 8kHz to 192kHz

† 128 times Oversampling (Normal Speed Mode)

† 64 times Oversampling (Double Speed Mode)

† 32 times Oversampling (Quad Speed Mode)

† 24-Bit 8 times FIR Digital Filter

† On chip SCF

† Digital de-emphasis for 32k, 44.1k and 48kHz sampling

† Soft mute

† Digital Attenuator (Linear 256 steps)

† I/F format: 24-Bit MSB justified, 24/20/16-Bit LSB justified or I2S

† Master clock: 256fs, 384fs, 512fs, 768fs or 1152fs (Normal Speed Mode)

128fs, 192fs, 256fs or 384fs (Double Speed Mode)

128fs, 192fs (Quad Speed Mode)

† THD+N: -94dB

† Dynamic Range: 108dB

† High Tolerance to Clock Jitter

† Power supply: 4.75 to 5.25V

† Very Small Package: 16pin TSSOP (6.4mm x 5.0mm)

† AK4381 Pin Compatible

MCLK

CSN

CCLK

CDTI

LRCK

BICK

SDTI

µP

Interface

De-emphasis

Control

Clock

Divider

Audio

Data

Interface

8X

Interpolator

8X

Interpolator

∆Σ

Modulator

∆Σ

Modulator

SCF

SCF

VDD

VSS

DZFL

DZFR

AOUTL+

AOUTL-

AOUTR+

AOUTR-

PDN

MS0246-E-01

-1-

2006/01

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