MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 8

• 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.)
8
AVDD
_______________________________________________________________________________________
3.0
2.5
2.0
1.5
1.0
0.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
2.5
2.5
= V
OUTPUT POWER vs. SUPPLY VOLTAGE
OUTPUT POWER vs. SUPPLY VOLTAGE
f = 1kHz
R
f = 1kHz
R
LOAD
LOAD
PVDD
3.0
3.0
(MAX9791 SPEAKER MODE)
(MAX9792 SPEAKER MODE)
= 4Ω
= 3Ω
= V
SUPPLY VOLTAGE (V)
THD+N = 10%
3.5
3.5
A
SUPPLY VOLTAGE
THD+N = 10%
IN1
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
HPVDD
= 20kΩ (A
4.0
4.0
THD+N = 1%
= 5V, V
4.5
THD+N = 1%
4.5
VSPKR
5.0
5.0
GND
= 12dB), R
= V
5.5
5.5
PGND
-100
Typical Operating Characteristics (continued)
-10
-20
-30
-40
-50
-60
-70
-80
-90
= V
2.0
1.5
1.0
0.5
IN2
0
0
0.01
2.5
CPGND
OUTPUT POWER vs. SUPPLY VOLTAGE
= 40.2kΩ (A
f = 1kHz
R
V
R
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (SPEAKER MODE)
LOAD
RIPPLE
L
= 8Ω
3.0
(MAX9791 SPEAKER MODE)
= 8Ω
= 200mV
= 0, I
0.1
SPEAKER
SUPPLY VOLTAGE (V)
3.5
THD+N = 10%
FREQUENCY (kHz)
LDO_OUT
P-P
VHP
4.0
1
= 0dB), C
THD+N = 1%
LEFT
4.5
= 0, C
10
RIGHT
5.0
IN1
LDO
= 470nF, C
100
5.5
= 2 x 1µF, C1 = C2 = 1µF. R
-100
-110
-10
-20
-30
-40
-50
-60
-70
-80
-90
2.5
2.0
1.5
1.0
0.5
IN2
0
0
0.01
2.5
OUTPUT POWER vs. SUPPLY VOLTAGE
= C
f = 1kHz
R
FS = 1V
V
R
LOAD
IN
L
= 8Ω
= -20dBFS
CROSSTALK vs. FREQUENCY
3.0
COM
(MAX9792 SPEAKER MODE)
= 8Ω
RMS
0.1
SUPPLY VOLTAGE (V)
(SPEAKER MODE)
= 1µF, measurement BW
3.5
THD+N = 10%
FREQUENCY (kHz)
RIGHT TO LEFT
4.0
1
L
= ∞, unless oth-
4.5
LEFT TO RIGHT
THD+N = 1%
10
5.0
100
5.5