MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 12

• 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

Windows Vista-Compliant Class D Speaker
Amplifiers with DirectDrive Headphone Amplifiers
(V
erwise specified. R
= 20kHz AES17, T
HP_EN = 1.)
12
AVDD
______________________________________________________________________________________
= V
PVDD
-100
-120
-140
-20
-40
-60
-80
= V
A
0
IN1
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
0
HPVDD
RIGHT AND LEFT
FS = 707mV
V
R
= 20kΩ (A
IN
L
OUTPUT FREQUENCY SPECTRUM
= 32Ω
= -60dBFS
SHUTDOWN WAVEFORM
= 5V, V
(HEADPHONE MODE)
5
RMS
FREQUENCY (kHz)
VSPKR
200µs/div
GND
10
= 12dB), R
= V
PGND
15
MAX9791 toc34
Typical Operating Characteristics (continued)
= V
IN2
CPGND
20
= 40.2kΩ (A
HP_EN
2V/div
HP_
500mV/div
HEADPHONE
= 0, I
LDO_OUT
VHP
= 0dB), C
= 0, C
-110
-130
-10
-30
-50
-70
-90
IN1
500
LDO
R
= 470nF, C
L
= 32Ω
= 2 x 1µF, C1 = C2 = 1µF. R
HEADPHONE RF IMMUNITY
1000
RIGHT
STARTUP WAVEFORM
vs. FREQUENCY
LEFT
FREQUENCY (MHz)
1500
200µs/div
IN2
= C
2000
COM
2500
MAX9791 toc33
= 1µF, measurement BW
3000
L
HP_EN
2V/div
HP_
500mV/div
= ∞, unless oth-