max9779etit Maxim Integrated Products, Inc., max9779etit Datasheet - Page 7

• Manufacturer Part Number: max9779etit
• Description: Max9779 2.6w Stereo Audio Power Amplifier And Directdrive Headphone Amplifier
• Manufacturer: Maxim Integrated Products, Inc.

(Measurement BW = 22Hz to 22kHz, T
0.001
1000
0.01
100
180
160
140
120
100
0.1
10
80
60
40
20
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
10
vs. OUTPUT POWER (HEADPHONE MODE)
0
OUTPUT POWER vs. LOAD RESISTANCE
V
R
A
THD+N = 1%
DD
L
V
= 32Ω
= 3dB
= 5V
THD+N = 10%
20
(HEADPHONE MODE)
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
40
_______________________________________________________________________________________
0
100
10
2.6W Stereo Audio Power Amplifier and
vs. FREQUENCY (HEADPHONE MODE)
V
OUTPUT REFERRED
POWER-SUPPLY REJECTION RATIO
RIPPLE
60
= 200mV
100
80
FREQUENCY (Hz)
P-P
A
1000
100
1k
= +25°C, unless otherwise noted.)
DirectDrive Headphone Amplifier
0.001
1000
10k
0.01
100
250
225
200
175
150
125
100
Typical Operating Characteristics (continued)
0.1
10
75
50
25
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
POWER DISSIPATION vs. OUTPUT POWER
vs. OUTPUT POWER (HEADPHONE MODE)
0
0
V
R
A
25
DD
L
V
100k
= 16Ω
= 3dB
= 3.3V
10
50 75 100 125
(HEADPHONE MODE)
OUTPUT POWER (mW)
OUTPUT POWER (mW)
20
30
V
f = 1kHz
P
DD
OUT
150 175
= 5V
= P
40
OUTL
200
-100
-120
+ P
-20
-40
-60
-80
50
0
OUTR
225
10
V
V
R
250
DD
RIPPLE
L
60
= 32Ω
RIGHT TO LEFT
= 5V
CROSSTALK vs. FREQUENCY
= 200mV
100
(HEADPHONE MODE)
LEFT TO RIGHT
0.001
1000
FREQUENCY (Hz)
0.01
100
0.1
125
100
P-P
10
75
50
25
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
3.0
vs. OUTPUT POWER (HEADPHONE MODE)
1k
0
OUTPUT POWER vs. SUPPLY VOLTAGE
f = 1kHz
V
R
A
DD
L
V
10
= 32Ω
= 3dB
= 3.3V
3.5
20
10k
(HEADPHONE MODE)
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
R
30 40
L
= 16Ω
4.0
100k
R
50
L
4.5
= 32Ω
60
70
5.0
80
5.5
90
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