MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 17

• Manufacturer Part Number: MAX9791AETI+T
• Description: IC AMP AUDIO 2.2W STER D 28TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class Dr

Specifications of MAX9791AETI+T

• Output Type: 2-Channel (Stereo) with Stereo Headphones and Subwoofer
• Max Output Power X Channels @ Load: 2.2W x 2 @ 4 Ohm; 180mW x 2 @ 32 Ohm
• Voltage - Supply: 4.5 V ~ 5.5 V
• Features: Depop, LDO, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Amplifiers with DirectDrive Headphone Amplifiers
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+
HP_EN
NAME
SENSE
CPVSS
OUTR-
OUTL-
AVDD
PGND
PVDD
BEEP
COM
GND
HPR
C1N
HPL
C1P
EP
Windows Vista-Compliant Class D Speaker
______________________________________________________________________________________
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 the MAX9791A/MAX9791B with two 1µF ceramic low ESR capacitors to GND.
Bypass the MAX9791C with two 2µs 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
Headphone Amplifier Negative Power Supply. Connect a 1µF capacitor between CPVSS and PGND.
Charge-Pump Flying Capacitor Negative Terminal. Connect a 1µF capacitor between C1P and C1N.
Charge-Pump Ground. Connect directly to PGND plane.
Charge-Pump Flying Capacitor Positive Terminal. Connect a 1µF capacitor between C1P and C1N.
Headphone Amplifier Positive Power Supply. Connect a 10µF capacitor between HPVDD and PGND.
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
17