Datasheet

MAX9850
Stereo Audio DAC with DirectDrive
Headphone Amplifier
______________________________________________________________________________________ 13
Functional Diagram/Typical Operating Circuit
AV
DD
SV
SS
AV
DD
SV
SS
MONO
VOLUME/MUTE
CONTROL
LINE OUT
POSITIVE
REGULATOR
LINE OUT
NEGATIVE
REGULATOR
VOLUME/MUTE
CONTROL
LINE OUT AMP
LINE OUT AMP
INTERPOLATOR
RIGHT
DAC
LEFT
DAC
MAX9850
3 2 1
DIGITAL
AUDIO
INTERFACE
DSP
SDIN BCLK LRCLK
28 27
8
I
2
C
INTERFACE
SDA SCL GPIO
AV
DD
SV
SS
CLOCK CONTROL
AND DIGITAL PLL
CHARGE
PUMP
PV
DD
C1P C1N PV
SS
SV
SS
25 23 22
PGND DGND AGND 24 620
OUTR
HPL
HPS HPR
OUTL
11
18
21
19
12
LINE OUT
LINE OUT
14
INL 10
LEFT LINE INPUT
NREG 15
0.1μF1μF
C2 2.2μF
C1
0.47μF
ADD
10kΩ 10kΩ10kΩ
DV
DD
μC
1.8V TO 3.6V
54
13
MCLK DV
DD
REF
1μF
26
PV
DD
1μF
9
INR
1.8V TO 3.6V
17
AV
DD
1μF 0.1μF1μF
16
1μF
PREG
7
RIGHT LINE INPUT