ASAHI KASEI
[AK4532]
AK4532
Internet/Network/General Purpose Multimedia Audio CODEC
General Description
The AK4532 is a low-cost high-quality 16-Bit CODEC designed specifically for Internet Boxes,
Network PCs, and to interface with audio/video controller ICs for standard PC applications. AKM’s
AK4532 serial interface mode simplifies the design process on existing and new audio projects. The
converters can have a range of 4 to 50 kHz. For voice mail applications, an internal 26 dB microphone
preamp has been added and because of the internal input mixer, music or other sounds can easily be
mixed with voice.
Features
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2ch Audio CODEC
2ch stereo including 1ch mono recording mixer with L/R, R/L, L/L and R/R switching
2ch stereo playback mixer
Mic input with 26 dB optional gain
High Jitter Tolerance
Interface compatible with AKM’s AK4531
Sampling Rate: 4 kHz to 50 kHz
3-wire Serial Interface for Mixer Control
5 V operation, can connect to 3.3 V Digital Controller.
Low power consumption - 150 mW
Power down mode
Small low profile package - 24 pin VSOP.
Block Diagram
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ASAHI KASEI
[AK4532]
Ordering Guide
AK4532
AKD4532
from -10°C to +70°C
Evaluation Board
24pin VSOP(0.65mm pitch)
Pin Layout
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ASAHI KASEI
[AK4532]
Pin and Function
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Pin Name
AGND
VA
MIC/AUXR
AUXL
LINER
LINEL
PD
MCLK
LRCK
SCLK
SDI
SDO
DGND
VD
CS
CCLK
CDATA
CMODE
LOUT
ROUT
VRAD
AINFL
AINFR
VCOM
I/O
-
-
I
I
I
I
I
I
I
I
I
O
-
-
I
I
I
I
O
O
I
-
-
-
Function
Analog Ground
Analog Power - 5V
Mic or Right Aux Line Level Input
Left Aux Line Level Input
Right Line Level Input
Left Line Level Input
Power down and Reset
Master Clock for CODEC
Left Right Clock for CODEC
Serial Clock for CODEC
Serial Data In
Serial Data Out
Digital Ground
Digital Power - 5V
Chip Select
Control Port Clock
Control Port Data
MCLK select (L:256fs, H:384fs)
Left Analog Out
Right Analog Out
A/D Reference
Connect to AGND with 0.1uF and 4.7uF capacitors
L channel Antialias Filter Pin
Connect to AGND with 1.0nF capacitor
R channel Antialias Filter Pin
Connect to AGND with 1.0nF capacitor
Voltage Common Output Pin
Connect to AGND with 0.1uF and 4.7uF capacitors.
Note: 1. No load current may be taken from the VCOM, VRAD pins for the external circuits.
2. All digital input pins should not be left floating.
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ASAHI KASEI
[AK4532]
ABSOLUTE MAXIMUM RATINGS
AGND, DGND = 0 V
Parameter
Power Supplies:
Input Current, Any Pin except Supplies
Analog Input Voltage Range
Digital Input Voltage
Ambient Temperature
Storage Temperature
Analog
Digital
Symbol
VA
VD
IIN
VINA
VIND
Ta
Tstg
min
-0.3
-0.3
-
-0.3
-0.3
-10
-65
max
6.0
6.0 or VA+0.3
+/- 10
6.0 or VA+0.3
6.0 or VA+0.3
70
150
Units
V
V
mA
V
V
°C
°C
Note: 1. All voltages with respect to ground.
2. Max value is higher voltage of 6.0 or VA+0.3V.
WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal
Operating Specifications are not guarantee at these extremes.
RECOMMENDED OPERATING CONDITIONS
(AGND, DGND = 0 V, Note 1)
Parameter
Power Supplies
Analog
Digital
Symbol
VA
VD
min
4.5
4.5
typ
5.0
5.0
max
5.5
VA
units
V
V
Note 1: All voltages with respect to ground.
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ASAHI KASEI
[AK4532]
ANALOG CHARACTERISTICS
(Ta=25
°C;
VA, VD = 5.0V; fs = 44.1kHz; Signal Frequency = 1 kHz; MCLK=256fs; BCLK = 64 fs;
LRCK = fs, Gain, ATT and Mixer switches are defualt setting. Measurement frequency bandwidth is
10Hz to 20kHz, unless otherwise noted.)
Parameter
min
typ
max
units
measured via LineL and LineR
A/D
Resolution
16
Bits
S/(N+D)
-0.5 dB Input
74
80
dB
S/N
A-weighted
84
90
dB
Dynamic Range
-60 dB Input,
84
90
dB
A-weighted
Interchannel Isolation
(Note 1)
68
76
dB
Interchannel Gain Mismatch
0.2
0.5
dB
Gain Drift
100
ppm/°
C
Offset Error
(Note 2)
+/- 1
LSB
Input Voltage
(Note 4)
2.50
2.70
2.90 Vpp
Mixer Input Resistance
30
60
100
kΩ
measured via LOUT and ROUT
D/A
Resolution
16
Bits
S/(N+D)
75
83
dB
S/N
A-weighted
83
87
dB
Dynamic Range
-60 dB Input,
83
87
dB
A-weighted
Interchannel Isolation
(Note 1)
80
100
dB
Interchannel Gain Mismatch
0.2
0.7
dB
ppm/°C
Gain Drift
100
Output Voltage
(Note 4)
2.85
3.05
3.35 Vpp
Load Resistance
10
kΩ
Out-of-Band Noise
BW < 100 kHz
-81
dB
MIC Amp
Gain
Input Resistance
Mixer Gain Control
Step Size
Gain Control Range
For 26dB setting
32 Steps
(Note 3)
32 Steps
(Note 3)
24
15
0
-50
0
-62
26
25
2
28
40
dB
kΩ
dB
dB
dB
dB
mA
mA
mW
uA
uA
uW
12
2
0
27
3
150
10
10
100
40
5
225
Master Volume
Step Size
Attenuation Control Range
Power Supplies
Normal Operation
VA
VD
Power Dissipation
VA
VD
Power Dissipation
Power-Down Mode
200
Note: 1. Crosstalk between channels on the same A/D or D/A.
2. Internal HPF removes offset
3. Minimum spec applies to
≥
-40dB setting.
4. Input and Output voltage scale with VA.
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Test/Measurement
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