MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 13

• 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
0.0001
AVDD
0.001
-100
-110
0.01
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
0.1
10
0
1
0.01
vs. OUTPUT POWER (HEADPHONE MODE)
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
0
= V
vs. FREQUENCY (HEADPHONE MODE)
R
V
V
R
L
IN
HPVDD
L
PVDD
= 10kΩ
= 10kΩ
f = 6kHz
= -3dBFS
FS = 707mV
0.5
= 3V
0.1
OUTPUT POWER (mW)
= V
1.0
f = 1kHz
A
FREQUENCY (kHz)
IN1
Windows Vista-Compliant Class D Speaker
RMS
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
______________________________________________________________________________________
HPVDD
= 20kΩ (A
f = 100Hz
1.5
1
FS = 1V
= 5V, V
2.0
10
RMS
VSPKR
2.5
GND
= 12dB), R
100
= V
3.0
PGND
-100
-110
-100
-110
-120
Typical Operating Characteristics (continued)
-10
-20
-30
-40
-50
-60
-70
-80
-90
-20
-30
-40
-50
-60
-70
-80
-90
= V
IN2
0
0.01
0.01
CPGND
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (HEADPHONE MODE)
= 40.2kΩ (A
V
R
V
HPVDD
L
IN
= 10kΩ
= -3dBFS
FS = 707mV
CROSSTALK vs. FREQUENCY
RIGHT TO LEFT
COM AND SENSE
= 3V
= 0, I
0.1
0.1
(HEADPHONE MODE)
LINE OUT
FREQUENCY (kHz)
FREQUENCY (kHz)
RMS
LDO_OUT
VHP
LEFT TO RIGHT
COM AND SENSE
1
1
= 0dB), C
FS = 1V
R
FS = 707mV
V
= 0, C
L
IN
= 10kΩ
10
= -20dBFS
10
RMS
IN1
LDO
RMS
= 470nF, C
100
100
= 2 x 1µF, C1 = C2 = 1µF. R
0.0001
0.001
-100
-120
-140
0.01
100
-20
-40
-60
-80
0.1
10
IN2
1
0
vs. OUTPUT POWER (HEADPHONE MODE)
0
0
TOTAL HARMONIC DISTORTION + NOISE
= C
R
RIGHT AND LEFT
R
FS = 300mV
V
L
L
IN
OUTPUT FREQUENCY SPECTRUM
0.5
= 10kΩ
= 10kΩ
= -60dBFS
COM
1.0
(HEADPHONE MODE)
5
f = 6kHz
OUTPUT POWER (mW)
RMS
= 1µF, measurement BW
FREQUENCY (kHz)
f = 1kHz
1.5
2.0
10
L
= ∞, unless oth-
2.5
f = 100Hz
3.0
15
3.5
4.0
20
13