ASAHI KASEI
[AK4358]
MS0203-E-00
2003/02
-
1
-
GENERAL DESCRIPTION
The AK4358 is eight channels 24bit DAC corresponding to digital audio system. Using AKM's advanced
multi bit architecture for its modulator the AK4358 delivers a wide dynamic range while preserving linearity
for improved THD+N performance. The AK4358 has full differential SCF outputs, removing the need for
AC coupling capacitors and increasing performance for systems with excessive clock jitter. The AK4358
accepts 192kHz PCM data and 1-Bit DSD data, ideal for a wide range of applications including
DVD-Audio and SACD.
FEATURES
Sampling Rate Ranging from 8kHz to 192kHz
24Bit 8 times Digital Filter with Slow roll-off option
THD+N: -94dB
DR, S/N: 112dB
High Tolerance to Clock Jitter
Low Distortion Differential Output
DSD Data input available
Digital De-emphasis for 32, 44.1 & 48kHz sampling
Zero Detect function
Channel Independent Digital Attenuator with soft-transition (3 Speed mode)
Soft Mute
3-wire Serial and I
2
C Bus P I/F for mode setting
I/F format: MSB justified, LSB justified (16bit, 20bit, 24bit), I
2
S, TDM or DSD
Master clock: 256fs, 384fs, 512fs or 768fs (PCM Normal Speed Mode)
128fs, 192fs, 256fs or 384fs (PCM Double Speed Mode)
128fs or 192fs (PCM Quad Speed Mode)
512fs or 768fs (DSD Mode)
Power Supply: 4.75 to 5.25V
48pin LQFP Package
SCF
DAC
DATT
DZF
LOUT1+
LOUT1-
SCF
DAC
DATT
ROUT1+
ROUT1-
SCF
DAC
DATT
LOUT2+
LOUT2-
SCF
DAC
DATT
ROUT2+
ROUT2-
SCF
DAC
DATT
LOUT3+
LOUT3-
SCF
DAC
DATT
ROUT3+
ROUT3-
Audio
I/F
Control
Register
AK4358
MCLK
LRCK
BICK
DCLK
DSDL1
DSDR1
3-wire
or I2C
SDTI1
SDTI2
SDTI3
DSDL2
DSDR2
DSDL3
DSDR3
PCM
DSD
SCF
DAC
DATT
LOUT4+
LOUT4-
SCF
DAC
DATT
ROUT4+
ROUT4-
DSDL4
DSDR4
SDTI4
192kHz 24-Bit 8ch DAC with DSD Input
AK4358
ASAHI KASEI
[AK4358]
MS0203-E-00
2003/02
-
4
-
PIN/FUNCTION
No. Pin
Name
I/O Function
1
LOUT1-
O
DAC1 Lch Negative Analog Output Pin
2
LOUT1+
O
DAC1 Lch Positive Analog Output Pin
3
DZF3
O
Zero Input Detect 3 Pin
4
DZF2
O
Zero Input Detect 2 Pin
5
DZF1
O
Zero Input Detect 1 Pin
6
CAD0
I
Chip Address 0 Pin
7
ACKSN
I
Auto Setting Mode Disable Pin (Pull-down Pin)
"L": Auto Setting Mode, "H": Manual Setting Mode
8 PDN
I Power-Down
Mode
Pin
When at "L", the AK4358 is in the power-down mode and is held in reset.
The AK4358 should always be reset upon power-up.
9
BICK
I
Audio Serial Data Clock Pin
10
MCLK
I
Master Clock Input Pin
An external TTL clock should be input on this pin.
11 DVDD
- Digital Power Supply Pin, +4.75
+5.25V
12 DVSS
- Digital
Ground
Pin
13
SDTI4
I
DAC4 Audio Serial Data Input Pin
14
SDTI1
I
DAC1 Audio Serial Data Input Pin
15
SDTI2
I
DAC2 Audio Serial Data Input Pin
16
SDTI3
I
DAC3 Audio Serial Data Input Pin
17
LRCK
I
L/R Clock Pin
18
I2C
I
Control Mode Select Pin
"L": 3-wire Serial, "H": I
2
C Bus
19
CCLK/SCL
I
Control Data Clock Pin
I2C = "L": CCLK (3-wire Serial), I2C = "H": SCL (I
2
C Bus)
20
CDTI/SDA
I/O
Control Data Input Pin
I2C = "L": CDTI (3-wire Serial), I2C = "H": SDA (I
2
C Bus)
21 CSN/CAD1
I Chip
Select
Pin
I2C = "L": CSN (3-wire Serial), I2C = "H": CAD1 (I
2
C Bus)
22 DCLK
I DSD
Clock
Pin
23
DSDL4
I
DAC4 DSD Lch Data Input Pin
24
DSDR4
I
DAC4 DSD Rch Data Input Pin
25
DSDL1
I
DAC1 DSD Lch Data Input Pin
26
DSDR1
I
DAC1 DSD Rch Data Input Pin
27
DSDL2
I
DAC2DSD Lch Data Input Pin
28
DSDR2
I
DAC2 DSD Rch Data Input Pin
29
DSDL3
I
DAC3 DSD Lch Data Input Pin
30
DSDR3
I
DAC3 DSD Rch Data Input Pin
31
DIF0
I
Audio Data Interface Format 0 Pin
32
ROUT4-
O
DAC4 Rch Negative Analog Output Pin
33
ROUT4+
O
DAC4 Rch Positive Analog Output Pin
34
VREFH
I
Positive Voltage Reference Input Pin
35 AVDD
- Analog Power Supply Pin, +4.75
+5.25V
36
AVSS
-
Analog Ground Pin
37
LOUT4-
O
DAC4 Lch Negative Analog Output Pin
38
LOUT4+
O
DAC4 Lch Positive Analog Output Pin
39
ROUT3-
O
DAC3 Rch Negative Analog Output Pin
40
ROUT3+
O
DAC3 Rch Positive Analog Output Pin
41
LOUT3-
O
DAC3 Lch Negative Analog Output Pin
42
LOUT3+
O
DAC3 Lch Positive Analog Output Pin
43
ROUT2-
O
DAC2 Rch Negative Analog Output Pin
44
ROUT2+
O
DAC2 Rch Positive Analog Output Pin
45
LOUT2-
O
DAC2 Lch Negative Analog Output Pin
ASAHI KASEI
[AK4358]
MS0203-E-00
2003/02
-
5
-
46
LOUT2+
O
DAC2 Lch Positive Analog Output Pin
47
ROUT1-
O
DAC1 Rch Negative Analog Output Pin
48
ROUT1+
O
DAC1 Rch Positive Analog Output Pin
Note: All input pins except pull-down pin should not be left floating.
ABSOLUTE MAXIMUM RATINGS
(AVSS, DVSS=0V; Note 1)
Parameter Symbol
Min
Max
Units
Power Supplies
Analog
Digital
|AVSS-DVSS| (Note 2)
AVDD
DVDD
GND
-0.3
-0.3
-
6.0
6.0
0.3
V
V
V
Input Current (any pins except for supplies)
IIN
-
10
mA
Analog Input Voltage
VINA
-0.3
AVDD+0.3
V
Digital Input Voltage
VIND
-0.3
DVDD+0.3
V
Ambient Operating Temperature
Ta
-40
85
C
Storage Temperature
Tstg
-65
150
C
Note 1. All voltages with respect to ground.
Note 2. AVSS and DVSS must be connected to the same analog ground plane.
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
RECOMMENDED OPERATING CONDITIONS
(AVSS, DVSS=0V; Note 1)
Parameter Symbol
Min
Typ
Max
Units
Power Supplies
(Note 3)
Analog
Digital
AVDD
DVDD
4.75
4.75
5.0
5.0
5.25
5.25
V
V
Voltage Reference
VREF
AVDD-0.5
-
AVDD
V
Note 3. The power up sequence between AVDD and DVDD is not critical.
*AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
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