max9789a Maxim Integrated Products, Inc., max9789a Datasheet - Page 20

• Manufacturer Part Number: max9789a
• Description: Windows Vista-compliant, Stereo Class Ab Speaker Amplifiers And Directdrive Headphone Amplifiers Integrated Products
• Manufacturer: Maxim Integrated Products, Inc.

Windows Vista-Compliant, Stereo Class AB Speaker
Amplifiers and DirectDrive Headphone Amplifiers
20
TO CODEC
1.0µF
______________________________________________________________________________________
4.5V TO 5.5V
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
1.0µF
1.0µF
3V TO 5.5V
3V TO 5.5V
0.1µF
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
HP_EN 22
GAIN2 32
GAIN1 31
MUTE 25
VDD 30
2
3
LDO BLOCK
CONTROL
28
GND
AMPLIFIER
5, 21
STEREO
BTL
PGND
MAX9789A
PV
4.5V TO 5.5V
DD
8, 18
0.1µF
TO HPV
PV
14
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-
DD
DD
1.0µF
C1
1µF
3V TO 5.5V
C3
10µF