AK4387 Datasheet, PDF (1/21 Pages) Asahi Kasei Microsystems – 106dB 192kHz 24-Bit 2ch ΔΣ DAC

ASAHI KASEI
[AK4387]
AK4387
106dB 192kHz 24-Bit 2ch ∆Σ DAC
GENERAL DESCRIPTION
The AK4387 offers the perfect mix for cost and performance based audio systems. Using AKM's multi bit
architecture for its modulator the AK4387 delivers a wide dynamic range while preserving linearity for
improved THD+N performance. The AK4387 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 AK4387 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 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: -90dB
† Dynamic Range: 106dB
† Power supply: 4.5 to 5.5V
† Very Small Package: 16pin TSSOP
CSN
CCLK
CDTI
µP
Interface
MCLK
De-emphasis
Control
Clock
Divider
DVDD
AVDD
VSS
VCOM
DZF
LRCK
BICK
SDTI
Audio
ATT
8X
Interpolator
∆Σ
Modulator
SCF
LPF
Data
Interface
ATT
8X
Interpolator
∆Σ
Modulator
SCF
LPF
AOUTL
AOUTR
RSTN
MS0429-E-00
-1-
2005/09