ASAHI KASEI
[AK4380]
AK4380
100dB 24Bit 96kHz 2ch DAC
GENERAL DESCRIPTION
The AK4380 offers the perfect mix for cost and performance based audio systems. Using AKM's multi bit
architecture for its modulator the AK4380 delivers a wide dynamic range while preserving linearity for
improved THD+N performance. The AK4380 integrates a combination of SCF and CTF filters, removing
the need for high cost external filters and increasing performance for systems with excessive clock jitter.
The 24 Bit word length and 96kHz sampling rate make this part ideal for a wide range of applications
including DVD and AC-3 systems. The AK4380 is offered in a space saving 16pin TSSOP package.
FEATURES
o
Sampling Rates Ranging from 8kHz to 96kHz
o
128x Oversampling (Normal speed mode)
o
64x Oversampling (Double speed mode)
o
24Bit 8x FIR Digital Filter
o
2nd order Analog LPF
o
On chip Buffer with Single End Output
o
Digital de-emphasis for 32k, 44.1k and 48kHz sampling
o
Soft mute
o
I/F format: 24bit MSB justified, 24/20/16bit LSB justified, I
2
S
o
Master clock: 256fs, 384fs, 512fs or 768fs (Normal speed mode)
128fs, 192fs, 256fs or 384fs (Double speed mode)
o
THD+N: -88dB
o
Dynamic Range: 100dB
o
High Tolerance to Clock Jitter
o
Power supply: 4.5 to 5.5V
o
Space Saving 16 Pin TSSOP (6.4mm x 5.0mm) Package
P/S
MCLK
VDD
SMUTE/CSN
DFS/CCLK
DIF0/CDTI
DZF
µP
Interface
De-emphasis
Control
Clock
Divider
VSS
VCOM
LRCK
BICK
SDTI
Audio
Data
Interface
8X
Interpolator
8X
Interpolator
∆Σ
Modulator
∆Σ
Modulator
LPF
AOUTL
LPF
AOUTR
PDN
VREF
MS0018-E-01
-1-
2000/8
AKM [ ASAHI KASEI MICROSYSTEMS ]
