Datasheet

ADAU1761
Rev. C | Page 22 of 92
AVDDIOVDD AVDDDVDDOUT
LINN
RINN
RINP
LINP
LAUX
RAUX
+
++
AUX LEFT
MCLK
AGND AGND DGND
ADC_SDATA/GPIO1
DAC_SDATA/GPIO0
LRCLK/GPIO3
BCLK/GPIO2
SERIAL DATA
CM
SYSTEM
CONTROLLER
ADDR1/CDATA
SDA/COUT
SCL/CCLK
ADDR0/CLATCH
MICBIAS
LOUTP
LOUTN
ROUTP
ROUTN
CLOCK
SOURCE
ADAU1761
10µF
CM
10µF
0.1µF
10µF
10µF
10µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
9.1pF
22nF
R
EXT
0.1µF
FROM VOLTAGE
REGULATOR
(1.8V TO 3.3V)
1k
AUX RIGHT
10µF
1k
49.9
BCLK
1.2nH
22nF
R
EXT
22nF
R
EXT
R
EXT
22nF
INL+
INL–
INR+
INR–
OUTL+
OUTL–
OUTR+
OUTR–
SSM2306
CLASS-D 2W
STEREO SPEAKER
DRIVER
VDDVDD
GNDSD GND
2.5V TO 5.0V
RIGHT
SPEAKE
R
LEFT
SPEAKE
R
LHP
MONOOUT
RHP
CAPLESS
HEADPHONE
OUTPUT
BCLK
JACKDET/MICIN
GNDL/R SELECT
DATA
V
DD
CLK
DIGITAL
MICROPHONE
GNDL/R SELECT
DATA
V
DD
CLK
DIGITAL
MICROPHONE
SHUTDOWN
07680-060
0.1µF 10µF
+
Figure 28. System Block Diagram with Digital Microphones and SSM2306 Class-D Speaker Driver