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AK4635 Datasheet, PDF (6/81 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
[AK4635]
■ Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Analog
Digital
Pin Name
MIC/MICP, LIN/MICN, MPI, AOUT,
SPP, SPN, VCOC, VIN, VOUT, VSAG
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.
ABSOLUTE MAXIMUM RATINGS
(VSS1-3 =0V; Note 1)
Parameter
Symbol
min
Power Supplies: Analog
Digital
AVDD
−0.3
DVDD
−0.3
Speaker-Amp
SVDD
−0.3
Input Current, Any Pin Except Supplies
IIN
-
Analog Input Voltage (Note 3)
VINA
−0.3
Digital Input Voltage (Note 4)
VIND
−0.3
Ambient Temperature (powered applied)
Ta
−40
Storage Temperature
Tstg
−65
Maximum Power Dissipation (Note 2)
Pd
-
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.When PCB wiring density is 100%. This power is the AK4635 internal dissipation that does not include power of
externally connected speaker.
Note 3. LIN/MICN, MIC/MICP,VIN pins
Note 4. 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.
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; Note 1)
Parameter
Symbol
Min
typ
Power Supplies Analog
AVDD
2.8 (Note 6)
3.3
(Note 5) Digital
DVDD
1.6
3.3
Speaker-Amp
SVDD
2.2
3.3
max
Units
3.6
V
3.6
V
4.0
V
Note 1. All voltages with respect to ground.
Note 5. The power up sequence between AVDD, DVDD and SVDD is not critical. It is not permitted to power DVDD off
when AVDD or SVDD is powered up. When only AVDD or SVDD is powered OFF, the AK4635 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.
Note 6. Video Amp is used (PMV bit = “1”). When Video Amp is not used (PMV bit = “0”), Min. spec of AVDD is 2.2V.
* AKEMD assumes no responsibility for the usage beyond the conditions in this datasheet.
Rev. 0.6
2007/10
-6-