Datasheet

ADAU1381
Rev. B | Page 21 of 84
AOUTL
CM
10kΩ
10kΩ
10Ω
220µF
+
LEFT_OUT
100pF
10kΩ
10kΩ
10Ω
220µF
+
RIGHT_OUT
AOUTR
100nF 10µF
+
10kΩ
10kΩ
–
+
SPN
SPP
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
LMIC/LMICN/MICD1
LMICP
2kΩ
49.9kΩ
MICBIAS
0.1µF
A
NALOG
MIC 1
10µF
RMIC/RMICN/MICD2
RMICP
2kΩ
49.9kΩ
MICBIAS
CM
CM
0.1µF
A
NALOG
MIC 2
10µF
08313-022
CM
Figure 24. System Block Diagram with Analog Microphone Inputs