ASAHI KASEI
[AK4359]
MS0289-E-00
2004/02
- 1 -
GENERAL DESCRIPTION
The AK4359 is eight channels 24bit DAC corresponding to digital audio system. Using AKM's advanced
multi bit architecture for its modulator the AK4359 delivers a wide dynamic range while preserving
linearity for improved THD+N performance. The AK4359 has single end SCF outputs, increasing
performance for systems with excessive clock jitter. The AK4359 accepts 192kHz PCM data, ideal for a
wide range of applications including DVD-Audio.
FEATURES
Sampling Rate Ranging from 8kHz to 192kHz
24Bit 8 times Digital Filter with Slow roll-off option
THD+N:
-94dB
DR,
S/N: 106dB
High Tolerance to Clock Jitter
Single Ended Output Buffer with 2nd order Analog LPF
Digital De-emphasis for 32, 44.1 & 48kHz sampling
Zero Detect function
Channel Independent Digital Attenuator (Linear 256 steps)
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
Master clock: 256fs, 384fs, 512fs or 768fs or 1152fs (Normal Speed Mode)
128fs, 192fs, 256fs or 384fs (Double Speed Mode)
128fs or 192fs (Quad Speed Mode)
Power Supply: 4.5 to 5.5V
30pin VSOP Package
SCF
DAC
DATT
DZF
LOUT1
SCF
DAC
DATT
ROUT1
SCF
DAC
DATT
LOUT2
SCF
DAC
DATT
ROUT2
SCF
DAC
DATT
LOUT3
SCF
DAC
DATT
ROUT3
Audio
I/F
Control
Register
AK4359
MCLK
LRCK
BICK
3-wire
or I2C
SDTI1
SDTI2
SDTI3
PCM
SCF
DAC
DATT
LOUT4
SCF
DAC
DATT
ROUT4
SDTI4
LPF
LPF
LPF
LPF
LPF
LPF
LPF
LPF
192kHz 24-Bit 8ch DAC
AK4359
ASAHI KASEI
[AK4359]
MS0289-E-00
2004/02
- 4 -
PIN/FUNCTION
No. Pin
Name
I/O Function
1
MCLK
I
Master Clock Input Pin
An external TTL clock should be input on this pin.
2
BICK
I
Audio Serial Data Clock Pin
3
SDTI1
I
DAC1 Audio Serial Data Input Pin
4
LRCK
I
L/R Clock Pin
5
RSTB
I
Reset Mode Pin
When at "L", the AK4359 is in the reset mode.
The AK4359 should always be reset upon power-up.
SMUTE
I
Soft Mute Pin in parallel mode
"H": Enable, "L": Disable
CSN
I
Chip Select Pin in serial 3-wire mode
6
CAD0
I
Chip Address Pin in serial I2C mode
ACKS
I
Auto Setting Mode Pin in parallel mode
"L": Manual Setting Mode, "H": Auto Setting Mode
CCLK
I
Control Data Clock Pin in serial 3-wire mode
7
SCL
Control Data Clock Pin in serial I2C mode
DIF0
I
Audio Data Interface Format Pin in parallel mode
CDTI
I
Control Data Input Pin in serial 3-wire mode
8
SDA
I/O
Control Data Pin in serial I2C mode
9
SDTI2
I
DAC2 Audio Serial Data Input Pin
10
SDTI3
I
DAC3 Audio Serial Data Input Pin
11
SDTI4
I
DAC4 Audio Serial Data Input Pin
12
DIF1
I
Audio Data Interface Format Pin
13
DEM0
I
De-emphasis Filter Enable Pin
14 DVDD
Digital Power Supply Pin, +4.5
+5.5V
15
DVSS
Digital Ground Pin
I2C
I
Control Mode Select Pin in serial mode
"L": 3-wire Serial, "H": I
2
C Bus
16
DEM1
I
De-emphasis Filter Enable Pin in parallel mode
17
ROUT4
O
DAC4 Rch Analog Output Pin
18
LOUT4
O
DAC4 Rch Analog Output Pin
19
ROUT3
O
DAC3 Rch Analog Output Pin
20
LOUT3
O
DAC3 Rch Analog Output Pin
21
ROUT2
O
DAC2 Rch Analog Output Pin
22
LOUT2
O
DAC2 Rch Analog Output Pin
23 P/S
I Parallel/Serial Select Pin (Internal pull-up pin)
"L": Serial control mode, "H": Parallel control mode
24
ROUT1
O
DAC1 Rch Analog Output Pin
25
LOUT1
O
DAC1 Lch Analog Output Pin
26
VCOM
O
Common Voltage Pin, AVDD/2
Normally connected to AVSS with a 0.1
F ceramic capacitor in parallel with
a 10
F electrolytic cap.
27
AVSS
-
Analog Ground Pin
28 AVDD
- Analog Power Supply Pin, +4.5
+5.5V
29
DZF2
O
Data Zero Input Detect Pin
30
DZF1
O
Data Zero Input Detect Pin
Note: All input pins except pull-up pin should not be left floating.
ASAHI KASEI
[AK4359]
MS0289-E-00
2004/02
- 5 -
Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification Pin
Name
Setting
Analog
LOUT4-1, ROUT4-1
These pins should be open.
DZF2-1
These pins should be open.
Digital
SDTI4-1, SMUTE, DIF1, DEM0
These pins should be connected to DVSS.
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
4.5
4.5
5.0
5.0
5.5
5.5
V
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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