MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 11

• 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
250
200
150
100
90
80
70
60
50
40
30
20
10
50
0
0
2.5
10
= V
OUTPUT POWER vs. LOAD RESISTANCE
THD+N = 1%
f = 1kHz
PVDD
HEADPHONE OUTPUT POWER
3.0
(HEADPHONE MODE)
LOAD RESISTANCE (Ω)
= V
3.5
A
IN1
Windows Vista-Compliant Class D Speaker
R
vs. HPVDD
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
______________________________________________________________________________________
HPVDD
L
HPVDD (V)
= 32Ω
= 20kΩ (A
100
4.0
R
THD+N = 10%
L
V
f = 1kHz
= 5V, V
= 16Ω
HPVDD
4.5
THD+N = 1%
VSPKR
= 3V
5.0
GND
1000
= 12dB), R
= V
5.5
PGND
-100
-110
-120
Typical Operating Characteristics (continued)
400
350
300
250
200
150
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
= V
50
IN2
0
0
0.01
POWER DISSIPATION vs. OUTPUT POWER
0
CPGND
vs. FREQUENCY (HEADPHONE MODE)
= 40.2kΩ (A
V
R
POWER-SUPPLY REJECTION RATIO
RIPPLE
L
25
= 32Ω
PER CHANNEL OUTPUT POWER (mW)
HEADPHONE
= 200mV
= 0, I
0.1
50
(HEADPHONE MODE)
FREQUENCY (kHz)
75
R
LDO_OUT
P-P
L
VHP
RIGHT
= 16Ω
100
1
= 0dB), C
125
R
= 0, C
LEFT
L
150
= 32Ω
10
IN1
175
LDO
= 470nF, C
200
100
= 2 x 1µF, C1 = C2 = 1µF. R
-100
300
250
200
150
100
-20
-30
-40
-50
-60
-70
-80
-90
50
IN2
0
0.01
POWER DISSIPATION vs. OUTPUT POWER
0
= C
RIGHT TO LEFT
COM AND SENSE
DISABLED
V
HPVDD
RIGHT TO LEFT
COM AND SENSE
PER CHANNEL OUTPUT POWER (mW)
CROSSTALK vs. FREQUENCY
COM
20
= 3V
0.1
(HEADPHONE MODE)
(HEADPHONE MODE)
= 1µF, measurement BW
RIGHT TO LEFT
COM AND SENSE
DISABLED
FREQUENCY (kHz)
40
R
L
= 16Ω
1
L
R
L
= ∞, unless oth-
= 32Ω
60
LEFT TO RIGHT
COM AND SENSE
R
FS = 300mV
V
L
IN
= 32Ω
= -20dBFS
10
80
RMS
100
100
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