MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 9

• 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

(V
erwise specified. R
= 20kHz AES17, T
HP_EN = 1.)
Amplifiers with DirectDrive Headphone Amplifiers
AVDD
= V
PVDD
-100
-110
-120
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
= V
RBW = 1kHz
INPUT AC GROUNDED
A
IN1
WIDEBAND OUTPUT SPECTRUM
SPEAKER STARTUP WAVEFORM
Windows Vista-Compliant Class D Speaker
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
_______________________________________________________________________________________
HPVDD
= 20kΩ (A
(SPEAKER MODE)
FREQUENCY (MHz)
1
= 5V, V
200µs/div
VSPKR
GND
10
= 12dB), R
= V
MAX9791 toc13
PGND
100
Typical Operating Characteristics (continued)
= V
IN2
SPKR_EN
2V/div
SPEAKER OUT
CPGND
= 40.2kΩ (A
SPEAKER
= 0, I
LDO_OUT
VHP
= 0dB), C
-100
-120
-140
-20
-40
-60
-80
0
1
= 0, C
V
f = 1kHz
R
UNWEIGHTED
SPEAKER SHUTDOWN WAVEFORM
OUT
L
OUTPUT FREQUENCY SPECTRUM
= 8Ω
= -60dBV
IN1
LDO
5
= 470nF, C
(SPEAKER MODE)
FREQUENCY (kHz)
= 2 x 1µF, C1 = C2 = 1µF. R
200µs/div
10
IN2
= C
15
MAX9791 toc14
COM
20
= 1µF, measurement BW
SPKR_EN
2V/div
SPEAKER OUT
L
= ∞, unless oth-
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