ASAHI KASEI
[AK4386]
MS0280-E-00
2003/12
- 1 -
GENERAL DESCRIPTION
The AK4386 is a 24bit low voltage & low power stereo DAC. The AK4386 uses the Advanced Multi-Bit
architecture, this architecture achieves DR=100dB at 3V operation. The AK4386 integrates a
combination of SCF and CTF filters increasing performance for systems with excessive clock jitter. The
AK4386 is suitable for the portable audio system like MP3 and the home audio systems like STB and TV,
etc as low power and small package. The AK4386 is offered in a space saving 16pin TSSOP package.
FEATURES
o
Sampling Rate: 8kHz
96kHz
o
24-Bit 8 times FIR Digital Filter
o
SCF with high tolerance to clock jitter
o
Single-ended output buffer
o
Digital de-emphasis for 44.1kHz sampling
o
I/F Format: 24-Bit MSB justified, 16/24-Bit LSB justified, I
2
S Compatible
o
Master Clock:
512/768/1024/1536fs for Half Speed (8kHz
24kHz)
256/384/512/768fs for Normal Speed (8kHz
48kHz)
128/192/256/384fs for Double Speed (48kHz
96kHz)
o
CMOS Input Level
o
THD+N:
-
86dB
o
DR, S/N: 100dB(@VDD=3.0V)
o
Power Supply: 2.2 to 3.6V
o
Ta =
-
40
85
C
o
16pin TSSOP
LRCK
BICK
SDTI
Audio
Data
Interface
MCLK
DIF1
Modulator
LOUT
8X
Interpolator
SCF
CTF
ROUT
VDD
VSS
VCOM
De-emphasis
Control
PDN
Clock
Divider
DFS1
DFS0
Modulator
8X
Interpolator
SCF
CTF
DEM
TEST
DIF0
100dB 96kHz 24-Bit 2ch
DAC
AK4386
ASAHI KASEI
[AK4386]
MS0280-E-00
2003/12
- 2 -
n
Ordering Guide
AK4386VT
-
40
+85
C 16pin TSSOP (0.65mm pitch)
AKD4386 Evaluation Board for AK4386
n
Pin Layout
SDTI
LRCK
DFS1
DEM
MCLK
BICK
PDN
DFS0
Top View
8
7
6
5
4
3
2
1
9
10
11
12
13
14
15
16
VDD
VSS
ROUT
LOUT
VCOM
DIF1
TEST
DIF0
ASAHI KASEI
[AK4386]
MS0280-E-00
2003/12
- 3 -
PIN/FUNCTION
No. Pin Name
I/O Function
1
MCLK
I
Master Clock Input Pin
2
BICK
I
Audio Serial Data Clock Pin
3
SDTI
I
Audio Serial Data Input Pin
4
LRCK
I
Input Channel Clock Pin
5
PDN
I
Full Power Down Mode Pin
"L" : Power down, "H" : Power up
6
DFS0
I
Sampling Speed Select 0 Pin
7
DFS1
I
Sampling Speed Select 1 Pin
8
DEM
I
De-emphasis Filter Enable Pin
"L" : OFF, "H" : ON (De-emphasis of fs=44.1kHz is enable.)
9
DIF0
I
Audio Interface Format 0 Pin
10 ROUT
O
Rch Analog Output Pin
11 LOUT
O
Lch Analog Output Pin
12 VCOM
O
Common Voltage Output Pin, 0.55
VDD
Normally connected to VSS with a 4.7
F (min. 1
F, max. 10
F) electrolytic
capacitor.
13 VSS
-
Ground Pin
14 VDD
-
Power Supply Pin, 2.2
3.6V
15 DIF1
I
Audio Interface Format 1 Pin
16 TEST
I
TEST Pin
This pin should be connected to VDD.
Note: All digital input pins should not be left floating.
n
Handling of Unused Pin
The unused output pins should be processed appropriately as below.
Classification
Pin Name
Setting
Analog
LOUT, ROUT
This pin should be open.
ASAHI KASEI
[AK4386]
MS0280-E-00
2003/12
- 4 -
ABSOLUTE MAXIMUM RATINGS
(VSS=0V; Note 1)
Parameter
Symbol
min
max
Units
Power Supply
VDD
-
0.3
4.6
V
Input Current, Any Pin Except Supplies
IIN
-
10
mA
Digital Input Voltage
VIND
-
0.3
VDD+0.3
V
Ambient Temperature (Powered applied)
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 result 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
2.2
3.0
3.6
V
Note 1. All voltages with respect to ground.
WARNING: AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
ASAHI KASEI
[AK4386]
MS0280-E-00
2003/12
- 5 -
ANALOG CHARACTERISTICS
(Ta=25
C; VDD=3.0V; VSS=0V; fs=44.1kHz, 96kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Data;
Measurement frequency=20Hz
20kHz at fs=44.1kHz, 20Hz
40kHz at fs=96kHz; unless otherwise specified)
Parameter
min
typ
max
Units
Dynamic Characteristics:
Resolution
24
Bits
fs=44.1kHz
BW=20kHz
0dBFS
-
60dBFS
-
86
-
37
-
76
-
dB
dB
THD+N
fs=96kHz
BW=40kHz
0dBFS
-
60dBFS
-
84
-
34
-
-
dB
dB
DR (
-
60dBFS with A-weighted)
92
100
dB
S/N (A-weighted)
92
100
dB
Interchannel Isolation
80
100
dB
DC Accuracy:
Interchannel Gain Mismatch
0.2
0.5
dB
Gain Drift
100
-
ppm/
C
Output Voltage (Note 2)
1.85
2.0
2.15
Vpp
Load Resistance (Note 3)
10
k
Load Capacitance
25
pF
Power Supplies
Power Supply Current
Normal Operation (PDN pin = "H", fs=44.1kHz)
Normal Operation (PDN pin = "H", fs=96kHz)
Power Save mode (PDN pin = "H", MCLK Stop)
Full Power-down mode (PDN pin = "L") (Note 4)
6
6.5
1.5
10
9
10
2.5
50
mA
mA
mA
A
Note 2. Full-scale voltage (0dB). Output voltage scales with the voltage of VDD, Vout = 0.67
VDD (typ).
Note 3. For AC-load.
Note 4. All digital input pins are fixed to VDD or VSS.
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