ASAHI KASEI
[AK5359]
MS0428-E-00
2005/09
- 1 -
GENERAL DESCRIPTION
The AK5359 is a stereo A/D Converter with wide sampling rate of 8kHz
216kHz and is suitable for
consumer to professional audio system. The AK5359 achieves high accuracy and low cost by using
Enhanced dual bit
techniques. The AK5359 requires no external components because the analog
inputs are single-ended. The audio interface has two formats (MSB justified, I
2
S) and can correspond to
various systems like DTV, DVR and AV Receiver.
FEATURES
Linear Phase Digital Anti-Alias Filtering
Single-ended Input
Digital HPF for DC-Offset cancel
S/(N+D): 94dB
DR: 102dB
S/N: 102dB
Sampling Rate Ranging from 8kHz to 216kHz
Master Clock:
256fs/384fs/512fs/768fs (8kHz
54kHz)
256fs/384fs (54kHz
108kHz)
256fs/384fs (108kHz
216kHz)
Input level: CMOS
Master / Slave Mode
Audio Interface: 24bit MSB justified / I
2
S selectable
Power Supply: 4.5
5.5V (Analog), 3.0
5.5V (Digital)
Ta =
-
20
85
C (ET),
-
40
85
C (VT)
Small 16pin TSSOP Package
AK5357/58/81 Pin-compatible
Modulator
MCLK
AINL
LRCK
SCLK
SDTO
DIF
VCOM
Clock Divider
AINR
AGND
VA
Decimation
Filter
Serial I/O
Interface
Voltage Reference
CKS1
DGND
VD
CKS2
Modulator
Decimation
Filter
PDN
CKS0
24-Bit 192kHz
ADC
AK5359
ASAHI KASEI
[AK5359]
MS0428-E-00
2005/09
- 2 -
Ordering Guide
AK5359ET
-20 +85C
16pin
TSSOP
(0.65mm
pitch)
AK5359VT
-40 +85C
16pin
TSSOP
(0.65mm
pitch)
AKD5359
Evaluation
Board
for
AK5359
Pin Layout
CKS1
VCOM
VD
DGND
AINR
AINL
AGND
VA
Top View
8
7
6
5
4
3
2
1
9
10
11
12
13
14
15
16
DIF
PDN
LRCK
MCLK
SCLK
CKS2
CKS0
SDTO
Compatibility with AK5357, AK5359 and AK5381
AK5357 AK5358 AK5381 AK5359
fs
4kHz to 96kHz
8kHz to 96kHz
4kHz to 96kHz
8kHz to 216kHz
S/(N+D)
88dB 92dB 96dB 94dB
DR
102dB 102dB 106dB 102dB
VIH@TTL Level Mode
2.2V
2.2V
2.4V
Not Available
VA (Analog Supply)
2.7 to 5.5V
4.5 to 5.5V
4.5 to 5.5V
4.5 to 5.5V
2.7 to 5.5V
VD (Digital Supply)
2.7 to 5.5V
2.7 to 5.5V
3.0 to 5.5V @96kHz
3.0 to 5.5V
HPF Disable
Available
Not Available
Available
Available
Operating Temperature
ET:
-20 +85C
VT:
-40 +85C
ET:
-20 +85C
ET:
-20 +85C
VT:
-40 +85C
XT:
-40 +85C
ET:
-20 +85C
VT:
-40 +85C
ASAHI KASEI
[AK5359]
MS0428-E-00
2005/09
- 3 -
PIN / FUNCTION
No. Pin
Name
I/O
Function
1
AINR
I
Rch Analog Input Pin
2
AINL
I
Lch Analog Input Pin
3
CKS1
I
Mode Select 1 Pin
4 VCOM
O
Common Voltage Output Pin, VA/2
Bias voltage of ADC input.
5 AGND
- Analog
Ground
Pin
6
VA
-
Analog Power Supply Pin, 4.5
5.5V
7
VD
-
Digital Power Supply Pin, 3.0
5.5V
8
DGND
-
Digital Ground Pin
9 SDTO
O
Audio Serial Data Output Pin
"L" Output at Power-down mode.
10 LRCK
I/O
Output Channel Clock Pin
"L" Output in Master Mode at Power-down mode.
11 MCLK
I
Master Clock Input Pin
12 SCLK
I/O
Audio Serial Data Clock Pin
"L" Output in Master Mode at Power-down mode.
13 PDN
I
Power Down Mode & Reset Pin
"H": Power up, "L": Power down & Reset
The AK5359 must be reset once upon power-up.
14 DIF
I
Audio Interface Format Pin
"H": 24bit I
2
S Compatible, "L": 24bit MSB justified
15 CKS2
I
Mode Select 2 Pin
16 CKS0
I
Mode Select 0 Pin
Note: All input pins except analog input pins (AINR, AINL) should not be left floating.
Handling of Unused Pin
The unused input pins should be processed appropriately as below.
Classification Pin
Name
Setting
AINL
This pin should be open.
Analog
AINR
This pin should be open.
ASAHI KASEI
[AK5359]
MS0428-E-00
2005/09
- 4 -
ABSOLUTE MAXIMUM RATINGS
(AGND, DGND=0V; Note 1)
Parameter Symbol
min
max
Units
Power Supplies:
Analog
Digital
|AGND DGND| (Note 2)
VA
VD
GND
-0.3
-0.3
-
6.0
6.0
0.3
V
V
V
Input Current, Any Pin Except Supplies
IIN
-
10 mA
Analog Input Voltage (AINL, AINR, CKS1 pins)
VINA
-0.3 VA+0.3 V
Digital Input Voltage (Note 3)
VIND
-0.3 VD+0.3 V
AK5359ET Ta
-20 85 C
Ambient Temperature (powered applied)
AK5359VT Ta
-40
85
C
Storage Temperature
Tstg
-65 150 C
Note 1. All voltages with respect to ground.
Note 2. AGND and DGND must be connected to the same analog ground plane.
Note 3. PDN, DIF, MCLK, SCLK, LRCK, CKS0, CKS2 pins
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
(AGND, DGND=0V; Note 1)
Parameter Symbol
min
typ
max
Units
Power Supplies
(Note 4)
Analog
Digital
VA
VD
4.5
3.0
5.0
5.0
5.5
VA
V
V
Note 4. The power up sequence between VA and VD is not critical.
WARNING: AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
ASAHI KASEI
[AK5359]
MS0428-E-00
2005/09
- 5 -
ANALOG CHARACTERISTICS
(Ta=25
C; VA=VD=5.0V; AGND=DGND=0V; fs=48kHz; SCLK=64fs; Signal Frequency=1kHz;
24bit Data; Measurement frequency=20Hz
20kHz at fs=48kHz, unless otherwise specified)
Parameter min
typ
max
Units
ADC Analog Input Characteristics:
Resolution
24
Bits
Input Voltage (Note 5)
2.7
3.0
3.3
Vpp
fs=48kHz
BW=20kHz
-1dBFS
-60dBFS
84
-
94
39
dB
dB
fs=96kHz
BW=40kHz
-1dBFS
-60dBFS
82
-
92
38
dB
dB
S/(N+D)
fs=192kHz
BW=40kHz
-1dBFS
-60dBFS
-
-
90
38
dB
dB
DR (
-60dBFS, A-weighted)
94
102
dB
S/N (A-weighted)
94
102
dB
Input Resistance
fs=48kHz
fs=96kHz,192kHz
13
9
20
14
k
k
Interchannel Isolation
90
110
dB
Interchannel Gain Mismatch
0.1
0.5
dB
Gain Drift
100
-
ppm/
C
Power Supply Rejection (Note 6)
-
50
dB
Power Supplies
Power Supply Current
Normal Operation (PDN pin = "H")
VA
VD (fs=48kHz)
VD (fs=96kHz)
VD (fs=192kHz)
Power down mode (PDN pin = "L") (Note 7)
VA+VD
15
4
7
10
10
24
6
10
16
100
mA
mA
mA
mA
A
Note 5. This value is the full scale (0dB) of the input voltage. Input voltage is proportional to VA voltage.
Vin = 0.6 x VA (Vpp).
Note 6. PSR is applied to VA and VD with 1kHz, 50mVpp.
Note 7. All digital input pins and CKS1 pin are held VD or DGND.
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