ASAHI KASEI
[AK4383]
MS0090-E-00
2001/4
- 1 -
GENERAL DESCRIPTION
The AK4383 offers the perfect mix for cost and performance based audio systems. Using AKM's multi bit
architecture for its modulator the AK4383 delivers a wide dynamic range while preserving linearity for
improved THD+N performance. The AK4383 has full differential SCF outputs, removing the need for AC
coupling capacitors and increasing performance for systems with excessive clock jitter. The AK4383
accepts 192kHz PCM data and 1-Bit DSD data, ideal for a wide range of applications including DVD-
Audio and SACD. The AK4383 is offered in a space saving 20pin TSSOP package.
FEATURES
Sampling Rate Ranging from 8kHz to 192kHz
24-Bit 8 times FIR Digital Filter
On chip SCF
Digital de-emphasis for 32k, 44.1k and 48kHz sampling
Soft mute
Digital Attenuator (Linear 256 steps)
PCM I/F format: 24-Bit MSB justified, 24/20/16-Bit LSB justified or I
2
S
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)
THD+N: -94dB
Dynamic Range: 110dB
DSD Data Input Mode
High Tolerance to Clock Jitter
Power supply: 4.75 to 5.25V
Very Small Package: 20pin TSSOP (0.65mm pitch)
AK4382 Pin Compatible
LRCK/DSDR
BICK/DCLK
SDTI/DSDL
PCM
Data
Interface
MCLK
PDN
S&H
Modulator
AOUTL+
8X
Interpolator
SCF
AOUTR+
SCF
VDD
VSS
De-emphasis
Control
P
Interface
Clock
Divider
CSN
CCLK
CDTI
DZFR
S&H
Modulator
8X
Interpolator
AOUTL-
AOUTR-
DZFL
DSD
Data
Interface
DCLK
DSDL
DSDR
DSDM
192kHz 24-Bit 2ch
DAC with DSD input
AK4383
ASAHI KASEI
[AK4383]
MS0090-E-00
2001/4
- 2 -
Ordering Guide
AK4383VT
-40
+85
C
20pin TSSOP (0.65mm pitch)
AKD4383
Evaluation Board for AK4383
Pin Layout
1
MCLK
LRCK/DSDR
BICK/DCLK
CSN
CCLK
CDTI
Top
View
2
3
4
5
6
7
8
DZFL
DZFR
VSS
VDD
AOUTL+
AOUTL-
AOUTR+
AOUTR-
20
19
18
17
16
15
14
13
PDN
SDTI/DSDL
DCLK
DSDL
9
10
DSDM
DSDR
12
11
ASAHI KASEI
[AK4383]
MS0090-E-00
2001/4
- 3 -
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/DCLK
I
Audio Serial Data Clock Pin / DSD Clock Pin
3
SDTI/DSDL
I
Audio Serial Data Input Pin / DSD Lch Data Input Pin
4
LRCK/DSDR
I
L/R Clock Pin / DSD Rch Data Input Pin
5
PDN
I
Power-Down Mode Pin
When at "L", the AK4383 is in the power-down mode and is held in reset.
The AK4383 should always be reset upon power-up.
6
CSN
I
Chip Select Pin
7
CCLK
I
Control Data Input Pin
8
CDTI
I
Control Data Input Pin in serial mode
9
DCLK
I
DSD Clock Pin (Pull-down Pin)
10
DSDL
I
DSD Lch Data Input Pin (Pull-down Pin)
11
DSDR
I
DSD Rch Data Input Pin (Pull-down Pin)
12
DSDM
I
DSD Mode Enable Pin (Pull-down Pin)
"0": PCM data is input from Pin 2-4. And the mode can be switched between
PCM and DSD mode by register.
"1": DSD data is input from Pin 9-11.
13
AOUTR-
O
Rch Negative Analog Output Pin
14
AOUTR+
O
Rch Positive Analog Output Pin
15
AOUTL-
O
Lch Negative Analog Output Pin
16
AOUTL+
O
Lch Positive Analog Output Pin
17
VSS
-
Ground Pin
18
VDD
-
Power Supply Pin
19
DZFR
O
Rch Data Zero Input Detect Pin
20
DZFL
O
Lch Data Zero Input Detect Pin
Note: All input pins except pull-up pin should not be left floating.
ASAHI KASEI
[AK4383]
MS0090-E-00
2001/4
- 4 -
ABSOLUTE MAXIMUM RATINGS
(VSS=0V; Note 1)
Parameter
Symbol
min
max
Units
Power Supply
VDD
-0.3
6.0
V
Input Current (any pins except for supplies)
IIN
-
10
mA
Input Voltage
VIND
-0.3
VDD+0.3
V
Ambient Operating Temperature
Ta
-40
85
C
Storage Temperature
Tstg
-65
150
C
Note: 1. All voltages with respect to ground.
WARNING: Operation at or beyond these limits may results in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
RECOMMENDED OPERATING CONDITIONS
(VSS=0V; Note 1)
Parameter
Symbol
min
typ
max
Units
Power Supply
VDD
4.75
5.0
5.25
V
*AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
ASAHI KASEI
[AK4383]
MS0090-E-00
2001/4
- 5 -
ANALOG CHARACTERISTICS
(Ta=25
C; VDD=5.0V; fs=44.1kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Input Data;
Measurement frequency=20Hz
20kHz; R
L
2k
; PCM Mode; unless otherwise specified)
Parameter
min
typ
max
Units
Resolution
24
Bits
Dynamic Characteristics (Note 3)
fs=44.1kHz
BW=20kHz
0dBFS
-60dBFS
-94
-48
-87
-
dB
dB
fs=96kHz
BW=40kHz
0dBFS
-60dBFS
-92
-45
-84
-
dB
dB
THD+N
fs=192kHz
BW=40kHz
0dBFS
-60dBFS
-92
-45
-
-
dB
dB
Dynamic Range (-60dBFS with A-weighted) (Note 4)
102
110
dB
S/N (A-weighted) (Note 5)
102
110
dB
Interchannel Isolation (1kHz)
90
110
dB
Interchannel Gain Mismatch
0.2
0.5
dB
DC Accuracy
Gain Drift
100
-
ppm/
C
Output Voltage (Note 6)
2.3
2.5
2.7
Vpp
Load Resistance (Note 7)
2
k
Power Supplies
Power Supply Current (VDD)
Normal Operation (PDN = "H", fs
96kHz)
Normal Operation (PDN = "H", fs=192kHz)
Power-Down Mode (PDN = "L") (Note 8)
20
25
10
34
42
100
mA
mA
A
Notes: 3. Measured by Audio Precision (System Two). Refer to the evaluation board manual.
4. 100dB at 16bit data.
5. S/N does not depend on input bit length.
6. Full-scale voltage (0dB). Output voltage scales with the voltage of VREF,
AOUT (typ.@0dB)=(AOUT+)-(AOUT-)=
2.5Vpp VREF/5.
7. For AC-load. 4k
for DC-load.
8. All digital inputs including clock pins (MCLK, BICK and LRCK) are held VDD or VSS.
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