Maxim Integrated MAX9778 - Manual (Page 22)

MAX9777/MAX9778
Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
22 _ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
HPF
HPF
MICROCONTROLLER
CODEC
MAX9778
INR2
INR1
INL2
INL1
BIAS
1 µF
100 µF
0.68 µF
0.68 µF
0.68 µF
0.68 µF
0.047 µF
0.047 µF
220 µF
220 µF
27.4k Ω
27.4k Ω
47k Ω
10k Ω
10k Ω
680k Ω
33.2k Ω
33.2k Ω
15k Ω
15k Ω
15k Ω
15k Ω
15k Ω
15k Ω
IN1/2
MUTE
GAINA/B
HPS_EN
SHDN
GND
18 9, 13, 23, 27
PGND
GAINLB
GAINLA
OUTL+
OUTL-
OUTR+
GAINRA
GAINRB
OUTR-
HPS
V
DD
4.5V TO 5.5V
4.5V TO 5.5V
PV
DD
0.1 µF
17
5
6
19
20
28
1
15
2
14
16
22
21
24
26
12
10
7
8
11, 25 3, 4
Typical Application Circuits (continued)