ASAHI KASEI
[AK5353]
M0067-E-00
1999/06
- 1 -
GENERAL DESCRIPTION
The AK5353 is a stereo A/D Converter with wide sampling rate of 4kHz
96kHz and is suitable for
multimedia audio system. The AK5353 achieves high accuracy and low cost by using Enhanced dual bit
techniques. The AK5353 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 many systems like
Karaoke, surround.
FEATURES
o
Stereo
ADC
o
On-Chip Digital Anti-Alias Filtering
o
Single-ended Input
o
Digital HPF for DC-Offset cancel
o
S/(N+D): 84dB@5V, 80dB@3V for 48kHz
o
DR:
96dB@5V, 92dB@3V for 48kHz
o
S/N:
96dB@5V, 92dB@3V for 48kHz
o
Sampling Rate Ranging from 4kHz to 96kHz
o
Master Clock:
256fs/384fs/512fs (
48kHz)
256fs/384fs
(
96kHz)
o
Low Power Dissipation: 70mW
o
Small 16pin TSSOP Package
o
Power Supply: 2.7
5.5V (
48kHz)
4.5
5.5V (
96kHz)
o
Ta=-40
85
C
o
Input level: TTL/CMOS selectable
o
Output format: 24bit MSB justified / I
2
S selectable
Modulator
MCLK
AINL
LRCK
SCLK
SDTO
PD
DIF
VCOM
Clock Divider
AINR
AGND
VA
Decimation
Filter
Serial I/O
Interface
Voltage Reference
TTL
DGND
VD
TST
VREF
Modulator
Decimation
Filter
96kHz 24Bit
ADC with Singleended Input
AK5353
ASAHI KASEI
[AK5353]
M0067-E-00
1999/06
- 2 -
n
Ordering Guide
AK5353VT
-40
+85
C
16pin TSSOP
AKD5353
Evaluation Board
n
Pin Layout
1
AINR
AINL
VCOM
VREF
AGND
VA
VD
DGND
Top
View
2
3
4
5
6
7
8
TST
TTL
PDN
DIF
SCLK
MCLK
LRCK
SDTO
16
15
14
13
12
11
10
9
ASAHI KASEI
[AK5353]
M0067-E-00
1999/06
- 3 -
PIN/FUNCTION
No.
Pin Name
I/O
Description
1
AINR
I
Rch Analog Input Pin
2
AINL
I
Lch Analog Input Pin
3
VREF
O
Voltage Reference Output Pin
Normally connected to AGND with a 0.1uF ceramic capacitor
in parallel with an electrolytic capacitor less than 4.7uF.
4
VCOM
O
Common Voltage Output Pin
Normally connected to AGND with a 0.1uF ceramic capacitor
in parallel with an electrolytic capacitor less than 4.7uF.
5
AGND
-
Analog Ground Pin, 0V
6
VA
-
Analog Power Supply Pin, +2.7
+5.5V
7
VD
-
Digital Power Supply Pin, +2.7
+5.5V
8
DGND
-
Digital Ground Pin, 0V
9
SDTO
O
Serial Data Output Pin
Data bits are presented MSB first, in 2 s complement format.
This pin is L in the power-down mode.
10
LRCK
I
Left/Right Channel Select Pin
The fs clock is input to this pin.
11
MCLK
I
Master Clock Input Pin
12
SCLK
I
Serial Data Input Pin
Output data is clocked out on the falling edge of SCLK.
13
PDN
I
Power-Down Pin
When L , the circuit is in power-down mode.
The AK5353 should always be reset upon power-up.
14
DIF
I
Serial Interface Format Pin
L : MSB justified, H : I
2
S
15
TTL
I
Digital Input Level Select Pin
L : CMOS level (VA,VD=2.7
5.5V), H : TTL level (VA,VD=4.5
5.5V)
16
TST
I
Test Pin (Internal pull-down pin)
This pin should be left floating.
Note: All input pins except pull-down pins should not be left floating.
ASAHI KASEI
[AK5353]
M0067-E-00
1999/06
- 4 -
ABSOLUTE MAXIMUM RATINGS
(AGND, DGND=0V; Note 1)
Parameter
Symbol
min
max
Units
Power Supplies
Analog (VA pin)
Digital (VD pin)
|AGND-DGND|
VA
VD
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 (AINL, AINR pins)
VINA
-0.3
VA+0.3
V
Digital Input Voltage
VIND
-0.3
VD+0.3
V
Ambient Temperature
Ta
-40
85
C
Storage Temperature
Tstg
-65
150
C
Note:1. All voltages with respect to ground.
2. AGND and DGND must be connected to the same analog ground plane.
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 (fs=48kHz)
(AGND, DGND=0V; Note 1)
Parameter
Symbol
min
typ
max
Units
Power Supplies
(Note 3)
Analog
Digital
VA
VD
2.7
2.7
5.0
5.0
5.5
VA
V
V
Sampling Rate
fs
4
48
kHz
Note:1. All voltages with respect to ground.
3. The power up sequence between VA and VD is not critical.
RECOMMENDED OPERATING CONDITIONS (fs=96kHz)
(AGND, DGND=0V; Note 1)
Parameter
Symbol
min
typ
max
Units
Power Supplies
(Note 3)
Analog
Digital
VA
VD
4.5
4.5
5.0
5.0
5.5
VA
V
V
Sampling Rate
fs
4
96
kHz
Note:1. All voltages with respect to ground.
3. The power up sequence between VA and VD is not critical.
*AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
ASAHI KASEI
[AK5353]
M0067-E-00
1999/06
- 5 -
ANALOG CHARACTERISTICS
(Ta=25
C; VA,VD=5V; fs=48kHz; I/F format=Mode 0; Signal Frequency =1kHz;
Measurement band width=20Hz
20kHz; unless otherwise specified)
Parameter
min
typ
max
Units
ADC Analog Input Characteristics: Analog source impedance=470
(BW=40Hz
40kHz at fs=96kHz)
Resolution
24
Bits
S/(N+D) (-1dBFS) (Note 4)
fs=48kHz, VA=5V
fs=48kHz, VA=3V
fs=96kHz, VA=5V
76
76
-
84
84
84
dB
dB
dB
DR (-60dBFS) (Note 5)
fs=48kHz, VA=5V, A-weighted
fs=48kHz, VA=3V, A-weighted
fs=96kHz, VA=5V
90
86
-
96
92
93
dB
dB
dB
S/N
fs=48kHz, VA=5V, A-weighted
fs=48kHz, VA=3V, A-weighted
fs=96kHz, VA=5V
90
86
-
96
92
93
dB
dB
dB
Interchannel Isolation
78
90
dB
DC Accuracy
Interchannel Gain Mismatch
0.1
0.3
dB
Gain Drift
100
150
ppm/
C
Input Voltage (Note 6)
2.7
3.0
3.3
Vpp
Input Resistance (Note 7)
40
60
k
Power Supply Rejection (Note 8)
-
30
dB
Power Supplies
Power Supply Current
Normal Operation (PDN= H )
VA+VD (Note 9)
Power-Down Mode (PDN= L )
VA+VD
14
10
21
100
mA
A
Note:4. The ratio of the rms value of the signal to the rms sum of all the spectral components less than 20kHz bandwidth,
including distortion components.
5. S/(N+D) which is measured with an input signal of -60dB below full-scale.
6. This value is the full scale(0dB) of the input voltage.
Input voltage is proportional to VA. (Vin=0.6xVA)
7. 40k
(typ) and 25k
(min) at fs=96kHz.
8. PSR is applied to VA,VD with 1kHz, 50mVpp.
9. VA=11mA; VD=3mA@48kHz,5V, 1.5mA@48kHz,3V, 6mA@96kHz,5V (typ).
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