max9777etit Maxim Integrated Products, Inc., max9777etit Datasheet - Page 24

• Manufacturer Part Number: max9777etit
• Description: Max9777, Max9778 Stereo 3w Audio Power Amplifiers With Headphone Drive And Input Mux
• Manufacturer: Maxim Integrated Products, Inc.

Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
24
µCONTROLLER
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
TO
10kΩ
AUDIO
AUDIO
AUDIO
AUDIO
INPUT
INPUT
INPUT
INPUT
1kΩ
4.5V TO 5.5V
0.68
0.68
0.68
0.68
µ
µ
µ
µ
F
F
F
F
1kΩ
15kΩ
15kΩ
15kΩ
15kΩ
1
µ
F
19
17
20
14
28
15
6
2
5
1
INL1
INL2
INR1
INR2
BIAS
IN1/2
MUTE
GAINA/B
HPS_EN
SHDN
100
MAX9778
µ
F
INPUT
INPUT
MUX
MUX
BIAS
2:1
2:1
LOGIC
11, 25
4.5V TO 5.5V
PV
DD
18
3, 4
GND
V
DD
10k
10k
Ω
10k
Ω
10k
Ω
Ω
0.1
10k
10k
µ
F
PGND
Ω
Ω
Functional Diagrams (continued)
10k
10k
9, 13, 23, 27
GAIN
GAIN
MUX
MUX
SET
SET
Ω
Ω
HPS
GAINRB
GAINRA
GAINLB
GAINLA
OUTL+
OUTR+
OUTR-
OUTL-
HPS
8
7
10
12
22
21
24
26
16
15k
15k
Ω
Ω
33.2k
33.2k
Ω
Ω
27.4k
27.4k
0.047µF
0.047µF
220µF
220µF
Ω
Ω
10k
10k
Ω
Ω