MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 16

• 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.)
16
AVDD
______________________________________________________________________________________
= V
PVDD
= V
A
IN1
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
HPVDD
= 20kΩ (A
LINE-TRANSIENT RESPONSE
SHUTDOWN RESPONSE
= 5V, V
1.00ms/div
VSPKR
200µs/div
GND
= 12dB), R
= V
PGND
MAX9791 toc50
MAX9791 toc52
Typical Operating Characteristics (continued)
= V
IN2
CPGND
CH2 HIGH
1.000mV
CH1 LOW
4.560V
CH1 HIGH
5.500V
CH2 LOW
800.0µV
LDO_EN
2V/div
V
2V/div
= 40.2kΩ (A
LDO_EN
= 0, I
LDO
LDO_OUT
VHP
= 0dB), C
-100
-110
-120
-130
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
= 0, C
0.01
BOTH SPEAKERS WITH SIGNAL
P
R
I
LDO
SPKR
LSPKR
IN1
= 10mA
LOAD-TRANSIENT RESPONSE
CROSSTALK vs. FREQUENCY
LDO
= 1.2W
= 8W
0.1
RIGHT CHANNEL TO LDO
= 470nF, C
SPEAKER TO LDO
= 2 x 1µF, C1 = C2 = 1µF. R
FREQUENCY (kHz)
LEFT CHANNEL TO LDO
100ms/div
1
IN2
= C
10
COM
MAX9791 toc51
= 1µF, measurement BW
100
I
50mA/div
AC-COUPLED
V
10mV/div
LDO_OUT
LDO_OUT
L
= ∞, unless oth-