MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 15

• 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
-0.5
-1.0
-1.5
-2.0
300
250
200
150
100
2.0
1.5
1.0
0.5
50
0
0
0
0
= V
LDO_OUT = 4.75V
LDO DROPOUT VOLTAGE vs. LOAD
PVDD
50
25
LDO OUTPUT ACCURACY
vs. LOAD CURRENT
= V
LOAD CURRENT (mA)
100
A
50
IN1
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
I
LOAD
= 20kΩ (A
150
75
(mA)
= 5V, V
200
100
VSPKR
250
125
GND
300
= 12dB), R
150
= V
PGND
-100
0.10
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
Typical Operating Characteristics (continued)
-20
-40
-60
-80
= V
40
20
IN2
0
0
0.01
0
CPGND
LDO POWER-SUPPLY REJECTION RATIO
V
= 40.2kΩ (A
V
I
LOAD
LDO_OUT
RIPPLE
vs. AMPLIFIER OUTPUT POWER
AMPLIFIER OUTPUT POWER (mW)
= 10mA
300
LDO OUTPUT ACCURACY
= 200mV
= 0, I
0.1
= 4.75V
vs. FREQUENCY
FREQUENCY (kHz)
600
LDO
P-P
LDO_OUT
VHP
V
V
LDO_OUT
LDO_OUT
1
= 0dB), C
900
= 1.8V
= 0, C
= 3.3V
10
1200
IN1
LDO
= 470nF, C
1500
100
= 2 x 1µF, C1 = C2 = 1µF. R
-0.5
-1.0
200
175
150
125
100
1.0
0.5
75
50
IN2
0
0.01
-40
= C
V
COM
LDO_OUT
-15
LDO OUTPUT ACCURACY
0.1
LDO OUTPUT NOISE
vs. TEMPERATURE
= 1µF, measurement BW
TEMPERATURE (°C)
FREQUENCY (kHz)
= 3.3V
V
10
LDO_OUT
1
L
= ∞, unless oth-
V
= 4.75V
35
LDO_OUT
C
I
LOAD
LOAD
10
= 120mA
= 1.8V
= 2 x 1µF
60
100
85
15