MAX9790 Maxim Integrated Products, MAX9790 Datasheet - Page 21
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MAX9790
Manufacturer Part Number
MAX9790
Description
Windows Vista-Compliant Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX9790.pdf
(28 pages)
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Windows Vista-Compliant, Stereo Class AB Speaker
TO CODEC
LOGIC PINS CONFIGURED FOR:
LDO_EN = 1, LDO ENABLED
SPKR_EN = 0, SPEAKER AMPLIFIERS ENABLED
HP_EN = 1, HEADPHONE AMPLIFIER ENABLED
MUTE = 1, MUTE DISABLED
GAIN1 = 0 GAIN = 0, 6dB SPEAKER GAIN
Amplifiers and DirectDrive Headphone Amplifiers
1.0µF
1.0µF
3V TO 5.5V
4.5V TO 5.5V
______________________________________________________________________________________
3V TO 5.5V
1.0µF
1.0µF
1.0µF
1.0µF
1.0µF
1.0µF
SPKR_INR
SPKR_INL
LDO_OUT 29
LDO_SET 1
SPKR_EN 23
LDO_EN 4
HP_INR 26
HP_INL 27
0.1µF
HP_EN 22
GAIN2 32
GAIN1 31
MUTE 25
2
3
LDO BLOCK
CONTROL
28
GND
30
V
DD
AMPLIFIER
5, 21
STEREO
BTL
PGND
MAX9789
PV
4.5V TO 5.5V
DD
8, 18
TO HPV
PV
14
0.1µF
CHARGE
PUMP
SS
C2
1.0µF
TO PV
DD
SS
CPV
13
SS
17
20
19
24
16
15
10
11
12
6
7
9
Block Diagrams
OUTL+
BIAS
HPL
HPR
HPV
CPV
C1P
CPGND
C1N
OUTL-
OUTR+
OUTR-
www.DataSheet4U.com
DD
DD
1.0µF
C1
1µF
3V TO 5.5V
C3
10µF
21