max9791 Maxim Integrated Products, Inc., max9791 Datasheet - Page 16

• 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
16
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17, 26
20, 23
PIN
10
11
12
13
14
15
16
18
19
21
22
24
25
27
28
—
1
2
3
4
5
6
7
8
9
SPKR_INR
SPKR_INL
LDO_OUT
SPKR_EN
LDO_EN
HP_INR
CPGND
HP_INL
HPVDD
OUTR+
OUTL+
SENSE
CPVSS
HP_EN
OUTR-
NAME
OUTL-
AVDD
PGND
PVDD
BEEP
COM
GND
HPR
HPL
C1N
C1P
EP
Left-Channel Speaker Amplifier Input
Right-Channel Headphone Amplifier Input
Left-Channel Headphone Amplifier Input
Common-Mode Voltage Sense Input
Signal Ground. Star connect to PGND.
LDO Output. Bypass with two 1µF ceramic low ESR capacitors to GND.
Positive Power-Supply and LDO Input. Bypass with a 0.1µF and two 1µF capacitors to GND.
LDO Enable. Connect LDO_EN to AVDD to enable the LDO.
Right-Channel Headphone Amplifier Output
Left-Channel Headphone Amplifier Output
Headphone Ground Sense
H ead p hone Am p l i fi er N eg ati ve P ow er S up p l y. C onnect a 1µF cap aci tor b etw een C P V S S and P G N D .
C har g e- P um p Fl yi ng C ap aci tor N eg ati ve Ter m i nal . C onnect a 1µF cap aci tor b etw een C 1P and C 1N .
Charge-Pump Ground. Connect directly to PGND plane.
Charge-Pump Flying Capacitor Positive Terminal. Connect a 1µF capacitor between C1P and C1N.
H ead p hone Am p l i fi er P osi ti ve P ow er S up p l y. C onnect a 10µF cap aci tor b etw een H P V D D and P GN D .
Speaker Amplifier Power-Supply Input. Bypass with a 0.1µF capacitor to PGND.
Left-Channel Speaker Amplifier Output, Negative Phase
Left-Channel Speaker Amplifier Output, Positive Phase
Power Ground. Star connect to GND.
PC Beep Input. Connect to GND if beep detection function is disabled.
Active-High Headphone Amplifier Enable
Right-Channel Speaker Amplifier Output, Positive Phase
Right-Channel Speaker Amplifier Output, Negative Phase
Active-Low Speaker Amplifier Enable
Right-Channel Speaker Amplifier Input
Exposed Pad. Connect to GND.
FUNCTION
MAX9791 Pin Description