Maxim MAX9777, Руководство пользователя

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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
µ
F
100
µ
F
0.68
µ
F
0.68
µ
F
0.68
µ
F
0.68
µ
F
0.047
µ
F
0.047
µ
F
220
µ
F
220
µ
F
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
µ
F
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)