Datasheet

ADAU1381
Rev. B | Page 20 of 84
SYSTEM BLOCK DIAGRAMS
AOUTL
CM
10kΩ
10kΩ
10Ω
220µF
+
LEFT_OUT
100pF
10kΩ
10kΩ
10Ω
220µF
+
RIGHT_OUT
AOUTR
100nF 10µF
+
10kΩ
10kΩ
–
+
LMIC/LMICN/MICD1
LMICP
49.9kΩ
10µF
49.9kΩ
10µF
DIFFERENTIAL INPUT
(LEFT)
SPN
SPP
RMIC/RMICN/MICD2
RMICP
49.9kΩ
10µF
49.9kΩ
10µF
DIFFERENTIAL INPUT
(RIGHT)
BEEP
10µF
EXTERNAL
BEEP INPUT
MCKI
49.9Ω
2.2pF
EXTERNAL
MCLK SOURCE
MCKO
MCKO
49.9Ω
PDN
PDN
MICBIAS
MICBIAS
0.1µF
IOVDD
0.1µF
10µF
+
IOVDD
AVDD1
0.1µF
10µF
+
A
VDD1
DVDDOUT
0.1µF
10µF
+
AVDD2
0.1µF
47µF
+
AVDD2
8Ω
SPEAKER
OUT
DAC_SDATA/GPIO0
ADC_SDATA/GPIO1
BCLK/GPIO2
LRCLK/GPIO3
SERIAL
DATA
ADDR1/CLATCH
ADDR0/CDATA
SDA/COUT
SCL/CCLK
SYSTEM
CONTROLLER
THERM_PAD (EXPOSED PAD) DGND AGND1 AGND2
GPIO
GPIO
100pF
ADAU1381
STEREO SINGLE-ENDED
HEADPHONE OUTPUT
STEREO
HEADPHONE
AMPLIFIER
08313-021
Figure 23. System Block Diagram with Differential Inputs