MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 10

• 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.)
10
AVDD
0.001
-100
-100
0.01
100
-50
-60
-70
-80
-90
-50
-60
-70
-80
-90
0.1
10
______________________________________________________________________________________
1
0.01
0.01
vs. OUTPUT POWER (HEADPHONE MODE)
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
0
= V
vs. FREQUENCY (HEADPHONE MODE)
vs. FREQUENCY (HEADPHONE MODE)
R
V
V
R
V
V
R
L
IN
HPVDD
L
IN
HPVDD
L
10
f = 1kHz
PVDD
= 16Ω
= 32Ω
= 16Ω
= -3dBFS
= -3dBFS
f = 100Hz
FS = 300mV
20
= 3V
= 3V
0.1
0.1
OUTPUT POWER (mW)
= V
A
30
FREQUENCY (kHz)
FREQUENCY (kHz)
FS = 1V
IN1
FS = 1V
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
FS = 300mV
HPVDD
RMS
40
= 20kΩ (A
RMS
1
1
RMS
50
= 5V, V
RMS
60
10
10
VSPKR
70
f = 6kHz
GND
80
= 12dB), R
100
100
= V
90
PGND
0.001
0.001
-100
0.01
0.01
Typical Operating Characteristics (continued)
100
100
-50
-60
-70
-80
-90
= V
0.1
0.1
10
10
IN2
1
1
0.01
vs. OUTPUT POWER (HEADPHONE MODE)
vs. OUTPUT POWER (HEADPHONE MODE)
0
0
CPGND
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (HEADPHONE MODE)
= 40.2kΩ (A
V
R
V
R
V
R
HPVDD
L
IN
L
HPVDD
L
f = 100Hz
= 16Ω
= 16Ω
= 32Ω
= -3dBFS
10
f = 1kHz
HEADPHONE
40
= 3V
= 3V
f = 6kHz
= 0, I
0.1
20
OUTPUT POWER (mW)
OUTPUT POWER (mW)
FREQUENCY (kHz)
FS = 1V
LDO_OUT
FS = 300mV
80
VHP
30
f = 1kHz
1
RMS
= 0dB), C
40
120
RMS
= 0, C
f = 100Hz
50
10
160
f = 6kHz
IN1
60
LDO
= 470nF, C
100
200
70
= 2 x 1µF, C1 = C2 = 1µF. R
0.001
-100
0.01
100
250
200
150
100
-50
-60
-70
-80
-90
0.1
10
50
IN2
1
0
0.01
vs. OUTPUT POWER (HEADPHONE MODE)
0
1
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
OUTPUT POWER vs. LOAD RESISTANCE
f = 100Hz
= C
vs. FREQUENCY (HEADPHONE MODE)
R
V
R
L
IN
L
= 32Ω
= 32Ω
= -3dBFS
COM
FS = 300mV
50
0.1
(HEADPHONE MODE)
LOAD RESISTANCE (Ω)
f = 1kHz
OUTPUT POWER (mW)
= 1µF, measurement BW
FREQUENCY (kHz)
FS = 1V
100
RMS
10
1
L
RMS
= ∞, unless oth-
150
THD+N = 10%
f = 1kHz
THD+N = 1%
10
200
f = 6kHz
100
250
100