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Asahi Kasei Microsystems

AK4387 Datasheet Preview

AK4387 Datasheet

24-Bit 2ch DAC

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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




Asahi Kasei Microsystems

AK4387 Datasheet Preview

AK4387 Datasheet

24-Bit 2ch DAC

No Preview Available !

ASAHI KASEI
[AK4387]
„ Ordering Guide
AK4387ET
AKD4387
„ Pin Layout
-20 +85°C
16pin TSSOP (0.65mm pitch)
Evaluation Board for AK4387
MCLK
BICK
SDTI
LRCK
RSTN
CSN
CCLK
CDTI
1
2
3
4
5
6
7
8
Top
View
16 DZF
15 DVDD
14 AVDD
13 VSS
12 VCOM
11 AOUTL
10 AOUTR
9 NC
„ Compatibility with AK4384
1. Function
Functions
THD+N
Output Voltage
Slow Roll-Off Filter
Mode Setting
Zero Data Detect Pin
AK4384
-94dB
3.4Vpp
Available
Serial/Parallel
2 pins
AK4387
-90dB
2.95Vpp
Not Available
Serial
1 pin
2. Pin Configuration
AK4387
AK4384
MCLK
MCLK
BICK
BICK
SDTI
SDTI
LRCK
LRCK
RSTN
PDN
CSN SMUTE/CSN
CCLK
ACKS/CCLK
CDTI
DIF0/CDTI
Pin# Pin# AK4384
1 16 DZFL
2 15 DZFR
3 14 VDD
4 13 VSS
5 12 VCOM
6 11 AOUTL
7 10 AOUTR
8 9 P/S
AK4387
DZF
DVDD
AVDD
VSS
VCOM
AOUTL
AOUTR
NC
3. Register map
Addr Register Name
00H Control 1
01H Control 2
02H Control 3
03H Lch ATT
04H Rch ATT
D7
ACKS
DZFE
0
ATT7
ATT7
D6 D5 D4 D3
0 0 DIF2 DIF1
1 0 DFS1 DFS0
0 0 INVL INVR
ATT6 ATT5 ATT4 ATT3
ATT6 ATT5 ATT4 ATT3
: Different points from AK4384
D2
DIF0
DEM1
DZFB
ATT2
ATT2
D1
PW
DEM0
0
ATT1
ATT1
D0
RSTN
SMUTE
0
ATT0
ATT0
MS0429-E-00
-2-
2005/09


Part Number AK4387
Description 24-Bit 2ch DAC
Maker Asahi Kasei Microsystems
Total Page 21 Pages
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