2.6W Stereo Audio Power Amplifiers and
DirectDrive Headphone Amplifiers
Typical Operating Characteristics (continued)
(Measurement BW = 22Hz to 22kHz, T = +25°C, unless otherwise noted.)
A
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
1000
100
10
1000
100
10
1000
100
10
V
= 5V
V
= 5V
DD
V
= 3.3V
DD
DD
R = 16Ω
R = 32Ω
R = 16Ω
L
L
L
A
= 3dB
A = 3dB
V
A
= 3dB
V
V
f
IN
= 1kHz
f
IN
= 1kHz
1
1
1
f
IN
= 10kHz
f
IN
= 10kHz
f
IN
= 10kHz
0.1
0.1
0.1
f
IN
= 20Hz
0.01
0.001
0.01
0.001
0.01
0.001
f
= 1kHz
100
IN
f
IN
= 20Hz
20
0
25
50
75
125
150
0
40
60
80
100
10
40
OUTPUT POWER (mW)
0
20
30
50
60
OUTPUT POWER (mW)
OUTPUT POWER (mW)
OUTPUT POWER vs. LOAD RESISTANCE
(HEADPHONE MODE)
POWER DISSIPATION vs. OUTPUT POWER
(HEADPHONE MODE)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
180
160
140
120
100
80
250
225
200
175
150
125
100
75
1000
100
10
V
= 3.3V
DD
L
V
R = 32Ω
A
THD+N = 10%
R = 16
L
Ω
= 3dB
f
= 1kHz
IN
1
f
IN
= 10kHz
R = 32
L
Ω
60
0.1
40
V
= 5V
50
DD
THD+N = 1%
0.01
0.001
f = 1kHz
= P
20
25
P
+ P
OUTR
OUT
OUTL
0
0
10
100
1000
0
25 50 75 100 125 150 175 200 225 250
OUTPUT POWER (mW)
40 50
OUTPUT POWER (mW)
90
0
10 20 30
60 70 80
LOAD RESISTANCE (Ω)
OUTPUT POWER vs. SUPPLY VOLTAGE
(HEADPHONE MODE)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (HEADPHONE MODE)
125
100
75
50
25
0
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
V
A
= 200mV
P-P
= 10.5dB
RIPPLE
V
R = 16Ω
L
OUTPUT REFERRED
R = 32Ω
L
f = 1kHz
3.0
3.5
4.0
4.5
5.0
5.5
10
100
1k
FREQUENCY (Hz)
10k
100k
SUPPLY VOLTAGE (V)
±
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
