ASAHI KASEI

[AK4348]

MS0532-E-00

2006/07

- 1 -

GENERAL DESCRIPTION

The AK4348 is an 8-channel 24bit DAC operating off of a single +3.3V power supply. The outputs are

single-ended, and it samples at rates from 8kHz to 192kHz. It uses AKM’s advanced multi-bit architecture

for the modulator to achieve a wide dynamic range while preserving linearity for improved THD+N

performance. The output circuit includes a switched-cap filter and a second-order analog low pass filter,

minimizing the need for external filtering.

FEATURES

Sampling Rate: 8kHz to 192kHz

24-Bit 8 times Digital Filter with Slow Roll-Off Option

DR, S/N: 104dB

THD+N: -90dB

High Tolerance to Clock Jitter

Single Ended Output Buffer with Second Order Analog LPF

Digital De-emphasis for 32, 44.1 & 48kHz sampling

Zero Detect Function

Channel Independent Digital Attenuator (Linear 256 steps)

3-wire Serial or I

I/F format: MSB justified, LSB justified (16-, 20-, 24-bit), I

Master clock:

256fs, 384fs, 512fs or 768fs or 1152fs (Normal Speed Mode)

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

128fs or 192fs (Quad Speed Mode)

Power Supply: 2.7V to 3.6V

Ta =

−20 ∼ 85°C (EF), −40 ∼ 85°C (VF)

Package: 30-pin VSOP

AK4359 Pin Compatible

SCF

DAC

DATT

DZF

LOUT1

SCF

DAC

DATT

ROUT1

SCF

DAC

DATT

LOUT2

SCF

DAC

DATT

ROUT2

SCF

DAC

DATT

LOUT3

SCF

DAC

DATT

ROUT3

Audio

I/F

Control

Register

AK4348

MCLK

LRCK

BICK

3-wire

or I2C

SDTI1

SDTI2

SDTI3

PCM

SCF

DAC

DATT

LOUT4

SCF

DAC

DATT

ROUT4

SDTI4

LPF

LPF

LPF

LPF

LPF

LPF

LPF

LPF

3.3V 192kHz 24-Bit 8-Channel DAC

AK4348