AK4650 Datasheet, PDF (82/86 Pages) Asahi Kasei Microsystems – 16Bit ΔΣ CODEC with MIC/HP/SPK-AMP & TSC

[AK4650]
SYSTEM DESIGN
Figure 57 shows the system connection diagram for the AK4650. An evaluation board [AKD4650] is available which
demonstrates the optimum layout, power supply arrangements and measurement results.
∼ 5V
Battery
2.7 ∼ 3.6V
Regulator
Internal MIC
MIC Jack
+
Touch
Screen
LCD
Driver
4.7n 10k
4.7n 10k
NC
IN2 AVDD VCOM AUXIN+ MPI
EXT MPE
NC
0.1u
VCOC1 VCOC2 AVSS MVREF AUXIN− INT
MDT
AIN MICOUT
10u 0.1u
+
XP TSVDD
YP
XN
YN TSVSS
0.1u
+
4.7u
IN1
VBAT
VREF TEST2 NC
AK4650VG
MOUT− MOUT+
HPL HPR
+ ^47u
+ ^47u
HVSS HVDD
SPP SPN
+
0.1u 10u
MUTET HDT
1u
100k
ADEXE INTN XTO SDATA DVSS2 SDATAIN SYNC MOUT2 MIN
0.1u
OUT
NC DVDD1 XTI DVSS1 BITCLK DVDD2 RESETN PLL1 TEST1
10
+
10u 0.1u
0.1u
Headphone
Jack
8ohm
Speaker
24.576MHz
Controller
Digital Ground
Analog Ground
Note 47. AVSS, DVSS, HVSS and TSVSS of the AK4650 should be distributed separately from the ground of external
controllers.
Note 48. All input pins except for internal pull-down pins should not be left floating.
Figure 57. Typical Connection Diagram
MS0502-E-01
- 82 -
2007/04