AK4679EG Datasheet, PDF (13/220 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with DSP and MIC/RCV/HP/SPK/LINE-AMP

[AK4679]
RECOMMENDED OPERATING CONDITIONS
(VSS1=VSS2=VSS3=VSS4=VSS5=0V; Note 4)
Parameter
Symbol
min
typ
max
Unit
Power
Analog
AVDD
1.7
1.8
2.0
V
Supplies SPK/RCV/LINE-Amp
SVDD
3.0
4.2
5.5
V
(Note 9) HP-Amp & Charge Pump
PVDD
1.7
1.8
2.0
V
Digital Core
DVDD
1.7
1.8
2.0
V
Digital I/O (Codec)
TVDDA
1.6
1.8
3.6
V
DSP Core
VDDE
1.1
1.2
1.3
V
Digital I/O (DSP)
TVDDE
1.6
1.8
3.6
V
Difference
AVDD – PVDD
−0.2
−
AVDD – DVDD −0.2
−
0.2
V
0.2
V
PVDD – DVDD
−0.2
−
0.2
V
Note 4. All voltages with respect to ground.
Note 9. The power-up sequence between supplies (AVDD, SVDD, PVDD, DVDD or TVDD) is not critical. The PDNA
pin should be held “L” when power supplies are tuning on. The PDNA pin is allowed to be “H” after all power
supplies are applied and settled. The AK4679 should be operated along the recommended power-up/down
sequence shown in “System Design (Grounding and Power Supply Decoupling)” to avoid pop noise at speaker
output, receiver output, headphone outputs and line outputs.
* AVDD, PVDD, DVDD, VDDE, TVDDE and TVDDA can be powered OFF (Power is not applied)
when SVDD is powered ON (Power is applied) with both PDNA and PDNE pin “L”. When
turning on AVDD, PVDD, DVDD, VDDE, TVDDE and TVDDA again in this case, the PDNA pin
must be “L” until all other power supplies are powered ON. Also, when turning off AVDD,
PVDD, DVDD, VDDE, TVDDE and TVDDA both the PDNA and PDNE pin must be “L” before
other power supplies start to turn off.
* AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
MS1402-E-06
- 13 -
2013/02