max9791 Maxim Integrated Products, Inc., max9791 Datasheet - Page 28

• Manufacturer Part Number: max9791
• Description: Windows Vista-compliant Class D Speaker Amplifiers With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

Windows Vista-Compliant Class D Speaker
Amplifiers with DirectDrive Headphone Amplifiers
28
TO CODEC
1.0μF
4.5V TO 5.5V
______________________________________________________________________________________
NOTE: LOGIC PINS CONFIGURED FOR:
LDO_EN = 1, LDO ENABLED
SPKR_EN = 0, SPEAKER AMPLIFIER ENABLED
HP_EN = 1, HEADPHONE AMPLIFIER ENABLED
1.0μF
1.0μF
μC BEEP INPUT
C
C
C
4.5V TO 5.5V
IN1
C
IN3
IN2
IN2
0.1μF
1.0μF
C
R
R
COM
RIN1
IN2
IN2
R
IN3
R
COM
LDO_OUT 6
SPKR_EN 27
SPKR_IN
LDO_EN 8
HP_INR 2
HP_INL 3
HP_EN 22
AVDD 7
BEEP 21
COM
4
28
LDO BLOCK
CONTROL
1, 5
20kΩ
GND
AMPLIFIER
20, 23
CLASS D
MONO
PGND
PVDD
4.5V TO 5.5V
17, 26
40.2kΩ
0.1μF
TO HPVDD
MAX9792A Block Diagram
40.2kΩ
40.2kΩ
CHARGE
TO HPVDD
PUMP
MAX9792A
MAX9792B
TO CPVSS
CPVSS
12
C2
1.0μF
19, 24
18, 25
16
10
15
14
13
11
9
OUT+
OUT-
HPL
HPR
SENSE
HPVDD
C1P
CPGND
C1N
C1
1.0μF
2.7V TO 5.5V
C3
10μF