ASAHI KASEI
[AK4388]
AK4388
192kHz 24-Bit 2ch ∆Σ DAC
GENERAL DESCRIPTION
The AK4388 offers the perfect mix for cost and performance based audio systems. Using AKM's multi bit
architecture for its modulator, the AK4388 delivers a wide dynamic range while preserving linearity for
improved THD+N performance. The AK4388 integrates a combination of SCF and CTF filters 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 AK4388 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
SCF with High Tolerance to Clock Jitter
Single Ended Output Buffer
Digital de-emphasis
Soft mute
I/F format: 24-Bit MSB justified, 24/16-Bit LSB justified or I2S
Master clock: 256fs, 384fs, 512fs, 768fs or 1152fs (Normal Speed Mode)
256fs or 384fs (Double Speed Mode)
128fs, 192fs (Quad Speed Mode)
THD+N: -90dB
Dynamic Range: 106dB
Power supply: 4.5 to 5.5V
Very Small Package: 16pin TSSOP (6.4mm x 5.0mm)
AK4384 Parallel Mode Compatible
MCLK
DEM
SMUTE
ACKS
DIF0
DIF1
LRCK
BICK
SDTI
Control
Port
De-emphasis
Control
Clock
Divider
8X
∆Σ
SCF
Audio
Interpolator
Modulator
LPF
Data
Interface
8X
∆Σ
SCF
Interpolator
Modulator
LPF
RSTN
MS0485-E-01
-1-
VDD
VSS
VCOM
DZF
AOUTL
AOUTR
2006/07