[AK4955]
ABSOLUTE MAXIMUM RATINGS
(VSS1=VSS2=VSS3= 0V;
Parameter
Analog
Digital
Power Supplies:
Lineout-Amp
Speaker-Amp
Digital I/O
Input Current, Any Pin Except Supplies
Analog Input Voltage (Note
4)
Digital Input Voltage
Symbol
AVDD
DVDD
LVDD
SVDD
TVDD
IIN
VINA
min
−0.3
−0.3
−0.3
−0.3
−0.3
-
−0.3
max
6.0
2.5
6.0
6.0
6.0
±10
AVDD+0.3
Unit
V
V
V
V
V
mA
V
5)
VIND
TVDD+0.3
V
−0.3
VIND
6.0
V
7)
−0.3
Ambient Temperature (powered applied)
Ta
85
−30
°C
Storage Temperature
Tstg
150
−65
°C
Maximum Power Dissipation (Note
7)
Pd1
-
880
mW
Note 2. All voltages are with respect to ground.
Note 3. VSS1, VSS2 and VSS3 must be connected to the same analog ground plane.
Note 4. MIN, LIN1, RIN1, LIN2, RIN2, VIN pins
Note 5. PDN, CDTIO/CAD0, SDTI, LRCK, BICK, MCKI and I2C pins
Note 6. CSN/SDA and CCLK/SCL pins
Note 7. This power is the AK4955 internal dissipation that does not include power dissipation of externally connected
speakers. The maximum junction temperature is 125°C and
θja
(Junction to Ambient) is 35°C/W at JESD51-9
(2p2s). When Pd =880mW and the
θja
is 35°C/W, the junction temperature does not exceed 125°C. In this case,
there is no case that the AK4955 is damaged by its internal power dissipation. Therefore, the AK4955 should be
used in the condition of
θja ≤
35°C/W.
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=VSS2=VSS3= 0V;
Parameter
Symbol
min
typ
max
Unit
Analog
AVDD
2.7
3.3
3.6
V
Power Supplies Digital
DVDD
1.6
1.8
2.0
V
8)
Lineout-Amp
LVDD
2.7
3.3
5.5
V
Speaker-Amp
SVDD
2.7
3.3
5.5
V
Digital I/O (Note
9)
TVDD
DVDD-0.2 or 1.6
1.8
3.6
V
Note 8. The power-up sequence between AVDD, DVDD, TVDD, LVDD and SVDD is not critical. The PDN pin must be
“L” upon power up, and should be changed to “H” after all power supplies are supplied to avoid an internal circuit
error.
Note 9. The minimum value is higher voltage between (DVDD-0.2)V and 1.6V.
* When TVDD is powered ON and the PDN pin is “L”, AVDD DVDD, LVDD and SVDD can be
powered ON/OFF. When the AK4955 is powered ON from power-down state, the PDN pin must
be “H” after all power supplies (AVDD, DVDD, TVDD, LVDD and SVDD) are ON.
* AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
MS1343-E-00
-7-
2011/12
AKM [ ASAHI KASEI MICROSYSTEMS ]
