Datasheet

ADAU1761
Rev. C | Page 21 of 92
AVDDIOVDD AVDDDVDDOUT
LINN
RINN
RINP
LINP
JACK
DETECTION
SIGNAL
LAUX
RAUX
+
++
AUX RIGHT
AUX LEFT
CM
JACKDET/MICIN
MCLK
AGND AGND DGND
SERIAL DATA
CM
SYSTEM
CONTROLLER
ADDR1/CDATA
SDA/COUT
SCL/CCLK
ADDR0/CLATCH
MICBIAS
CLOCK
SOURCE
THE INPUT CAPACITOR VALUE DEPENDS ON THE
INPUT IMPEDANCE, WHICH VARIES WITH THE
VOLUME SETTING.
ADAU1761
10µF
10µF
CM
10µF
10µF
10µF
0.1µF
10µF
10µF
0.1µF
0.1µF
9.1pF
0.1µF
FROM VOLTAGE
REGULATOR
(1.8V TO 3.3V)
1k
1k
49.9
0.1µF 10µF
+
1.2nH
V
DD
GND
SINGLE-ENDED
ANALOG
MICROPHONE
OUTPUT
V
DD
GND
SINGLE-ENDED
ANALOG
MICROPHONE
OUTPUT
LOUTP
LOUTN
LHP
MONOOUT
RHP
ROUTP
ROUTN
CAPLESS
HEADPHONE
OUTPUT
EARPIECE
SPEAKER
EARPIECE
SPEAKER
ADC_SDATA/GPIO1
DAC_SDATA/GPIO0
LRCLK/GPIO3
BCLK/GPIO2
07680-059
Figure 27. System Block Diagram with Analog Microphones