[AK4634]
■
Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Analog
Pin Name
MIC/MICP, LIN/MICN, MPI, AOUT,
SPP, SPN, VCOC
MCKI, SDTI
CDTIO
MCKO, SDTO
Setting
These pins should be open
These pins should be connected to VSS2
When I2C pin = “H”, These pins should be
connected to VSS2.
These pins should be open.
Digital
ABSOLUTE MAXIMUM RATINGS
(VSS1-3 =0V;
Parameter
Analog
Power Supplies:
Digital
Speaker-Amp
Input Current, Any Pin Except Supplies
Analog Input Voltage (Note
2)
Digital Input Voltage (Note
3)
Ambient Temperature (powered applied)
Storage Temperature
Maximum Power Dissipation (Note
4)
Symbol
AVDD
DVDD
SVDD
IIN
VINA
VIND
Ta
Tstg
Pd
min
−0.3
−0.3
−0.3
-
−0.3
−0.3
−40
−65
-
max
4.6
4.6
4.6
±10
AVDD+0.3
DVDD+0.3
85
150
400
Units
V
V
V
mA
V
V
°C
°C
mW
Note 1. All voltages with respect to ground. VSS21, VSS2 and VSS3 must be connected to the same analog ground plane.
Note 2. LIN/MICN, MIC/MICP pins
Note 3. PDN, I2C, CSN/SDA, CCLK/SCL, CDTIO, SDTI, FCK, BICK, MCKI pins
Pull-up resistors at SDA and SCL pins should be connected to (DVDD+0.3)V or less voltage.
Note 4.When PCB wiring density is 100%. This power is the AK4634 internal dissipation that does not include power of
externally connected speaker.
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
(VSS1-3=0V;
Parameter
Power Supplies Analog
Digital
5)
Speaker-Amp
Symbol
AVDD
DVDD
SVDD
Min
2.2
1.6
2.2
typ
3.3
3.3
3.3
max
3.6
3.6
4.0
Units
V
V
V
Note 5. The power up sequence between AVDD, DVDD and SVDD is not critical.
Do not power DVDD off when AVDD or SVDD is powered up.
When only AVDD or SVDD is powered OFF, the AK4634 must be reset by bringing the PDN pin “L” after
theses power supplies are powered ON again. The power supply current of DVDD at power-down mode may be
increased. DVDD should not be powered OFF while AVDD or SVDD is powered ON.
* AKEMD assumes no responsibility for the usage beyond the conditions in this datasheet.
Rev. 0.5
-6-
2007/10
AKM [ ASAHI KASEI MICROSYSTEMS ]
