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PDF AK4382A Data sheet ( Hoja de datos )
| Número de pieza | AK4382A | |
| Descripción | 112dB 192kHz 24-Bit 2ch DS DAC | |
| Fabricantes | AKM | |
| Logotipo |  |
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ASAHI KASEI
[AK4382A]
AK4382A
112dB 192kHz 24-Bit 2ch ∆Σ DAC
GENERAL DESCRIPTION
The AK4382A offers the perfect mix for cost and performance based audio systems. Using AKM's multi
bit architecture for its modulator the AK4382A delivers a wide dynamic range while preserving linearity
for improved THD+N performance. The AK4382A has full differential SCF outputs, removing the need
for AC coupling capacitors and increasing performance for systems with excessive clock jitter. The 24 Bit
word length and 216kHz sampling rate make this part ideal for a wide range of applications including
DVD-Audio. The AK4382A is offered in a space saving 16pin TSSOP package.
FEATURES
o Sampling Rate Ranging from 8kHz to 216kHz
o 128 times Oversampling (Normal Speed Mode)
o 64 times Oversampling (Double Speed Mode)
o 32 times Oversampling (Quad Speed Mode)
o 24 -Bit 8 times FIR Digital Filter
o On chip SCF
o Digital de -emphasis for 32k, 44.1k and 48kHz sampling
o Soft mute
o Digital Attenuator (256 steps)
o I/F format: 24-Bit MSB justified, 24/20/16-Bit LSB justified or I2S
o Master clock: 256fs, 384fs, 512fs or 768fs (Normal Speed Mode)
128fs, 192fs, 256fs or 384fs (Double Speed Mode)
128fs, 192fs (Quad Speed Mode)
o THD+N: -94dB
o Dynamic Range: 112dB
o High Tolerance to Clock Jitter
o Power supply: 4.75 to 5.25V
o Very Small Package: 16pin TSSOP (6.4mm x 5.0mm)
MCLK
CSN
CCLK
CDTI
LRCK
BICK
SDTI
µP
Interface
De-emphasis
Control
Clock
Divider
Audio
Data
Interface
8X
Interpolator
8X
Interpolator
∆Σ
Modulator
∆Σ
Modulator
SCF
SCF
VDD
VSS
DZFL
DZFR
AOUTL+
AOUTL-
AOUTR+
AOUTR-
PDN
MS0071-E-02
- 1-
2002/12
http://www.Datasheet4U.com
1 page  
ASAHI KASEI
[AK4382A]
SHARP ROLL-OFF FILTER CHARACTERISTICS
(Ta = 25°C; VDD = 4.75 ∼ 5.25V; fs = 44.1kHz; DEM = OFF; SLOW = “0”)
Parameter
Symbol
min
typ
max Units
Digital filter
Passband
±0.05dB (Note 9)
-6.0dB
PB 0
20.0 kHz
- 22.05 - kHz
Stopband
Passband Ripple
(Note 9)
SB 24.1
PR
± 0.02
kHz
dB
Stopband Attenuation
Group Delay
(Note 10)
SA 54
GD -
19.3
dB
- 1/fs
Digital Filter + SCF
Frequency Response 20.0kHz
40.0kHz
80.0kHz
fs=44.1kHz
fs=96kHz
fs=192kHz
FR
FR
FR
- ± 0.2 - dB
- ± 0.3 - dB
- +0/-0.6 - dB
Notes : 9. The passband and stopband frequencies scale with fs(system sampling rate).
For example, PB=0.4535×fs (@±0.05dB), SB=0.546×fs.
10. The calculating delay time which occurred by digital filtering. This time is from setting the 16/24bit data
of both channels to input register to the output of analog signal.
SLOW ROLL -OFF FILTER CHARAC TERISTICS
(Ta = 25°C; AVDD, DVDD = 4.75~5.25V; fs = 44.1kHz; DEM = OFF; SLOW = “1”)
Parameter
Symbol
min
typ
Digital Filter
Passband
±0.04dB (Note 11)
-3.0dB
PB 0
-
18.2
Stopband
(Note 11)
SB 39.2
Passband Ripple
PR
Stopband Attenuation
SA 72
Group Delay
(Note 10)
GD -
19.3
Digital Filter + SCF
Frequency Response
20.0kHz
40.0kHz
80.0kHz
fs=44.kHz
fs=96kHz
fs=192kHz
FR
FR
FR
Note: 11. The passband and stopband frequencies scale with fs.
For example, PB = 0.185×fs (@±0.04dB), SB= 0.888×fs.
-
-
-
+0/-5
+0/-4
+0/-5
max Units
8.1
-
± 0.005
-
kHz
kHz
kHz
dB
dB
1/fs
- dB
- dB
- dB
DC CHARACTERISTICS
(Ta=25°C; VDD=4.75∼ 5.25V)
Parameter
Symbol
min
High-Level Input Voltage
Low-Level Input Voltage
VIH 2.2
VIL -
High-Level Output Voltage (Iout=-80µA)
VOH
VDD-0.4
Low-Level Output Voltage (Iout=80µA)
VOL
-
Input Leakage Current
Iin -
typ
-
-
-
-
max Units
-V
0.8 V
-V
0.4 V
± 10 µA
MS0071-E-02
- 5-
2002/12
5 Page 
ASAHI KASEI
[AK4382A]
LRCK
BICK
(32fs)
SDTI
Mode 0
BICK
(64fs)
SDTI
Mode 0
01
10 11 12 13 14 15 0 1
15 14
01
6 5 4 3 2 1 0 15 14
14 15 16 17
31 0 1
Don’t care
15 14
15:MSB, 0:LSB
Lch Data
0 Don’t care
10 11 12 13 14 15 0 1
6 5 4 3 2 1 0 15 14
14 15 16 17
31 0 1
15 14
0
Rch Data
Figure 1. Mode 0 Timing
LRCK
BICK
(64fs)
SDTI
Mode 1
SDTI
Mode 4
01
8 9 10 11 12
Don’t care
19:MSB, 0:LSB
19
Don’t care 23 22 21 20 19
23:MSB, 0:LSB
Lch Data
31 0 1
8 9 10 11 12
0 Don’t care
19
0 Don’t care 23 22 21 20 19
Rch Data
31 0 1
0
0
Figure 2. Mode 1,4 Timing
LRCK
BICK
(64fs)
SDTI
01
2
22 23 24
30 31 0 1 2
22 23 24
30 31 0 1
23 22
1 0 Don’t care
23:MSB, 0:LSB
Lch Data
23 22
Figure 3. Mode 2 Timing
1 0 Don’t care
Rch Data
23 22
MS0071-E-02
- 11 -
2002/12
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet AK4382A.PDF ] | |
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