5V, Differential Input, DirectDrive, 130mW
Stereo Headphone Amplifiers with Shutdown
Typical Operating Characteristics (continued)
(MAX9722A, PV
= SV
= +5V, PGND = SGND = 0V, SHDN = SV , C1 = C2 = 1µF, R = ∞, gain = -1V/V, single-ended input,
DD DD L
DD
THD+N measurement bandwidth = 22Hz to 22kHz, T = +25°C, unless otherwise noted.)
A
OUTPUT POWER
vs. SUPPLY VOLTAGE
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. COMMON-MODE VOLTAGE
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
100
90
80
70
60
50
40
30
20
10
0
100
10
100
10
V
A
= 5V
= -1V/V
V
A
= 5V
= -1V/V
DD
V
L
DD
V
f = 10kHz
f = 1kHz
R = 16Ω
DIFFERENTIAL
f = 1kHz
DIFFERENTIAL
THD+N = 10%
1
1
R = 16Ω
L
THD+N = 1%
0.1
0.1
0.01
0.001
0.0001
0.01
0.001
0.0001
R = 32Ω
L
f = 20Hz
30
f = 1kHz
R = 16Ω
L
2.4
2.6
2.8
3.0
3.2
3.4
3.6
0
10
20
40
50
60
70
-0.5
-0.3
-0.1
0.1
0.3
0.5
SUPPLY VOLTAGE (V)
OUTPUT POWER (mW)
COMMON-MODE VOLTAGE (V)
OUTPUT POWER
vs. SUPPLY VOLTAGE
OUTPUT POWER
vs. LOAD RESISTANCE
OUTPUT POWER
vs. LOAD RESISTANCE
200
180
160
140
120
100
80
100
90
80
70
60
50
40
30
20
10
0
200
180
160
140
120
100
80
V
= 5V
DD
V
= 3V
DD
f = 1kHz
= -1V/V
f = 1kHz
AV = -1V/V
A
V
THD+N = 10%
THD+N = 10%
THD+N = 10%
THD+N = 1%
THD+N = 1%
THD+N = 1%
60
60
40
40
f = 1kHz
R = 32Ω
L
20
20
0
0
2.4
2.9
3.4
3.9
4.4
4.9
10
100
1000
10
100
1000
SUPPLY VOLTAGE (V)
LOAD RESISTANCE (Ω)
LOAD RESISTANCE (Ω)
POWER DISSIPATION
vs. OUTPUT POWER
POWER DISSIPATION
vs. OUTPUT POWER
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
300
250
200
150
100
50
600
500
400
300
200
100
0
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
V
= 3V
V
= 5V
V
= 3V
DD
DD
DD
f = 1kHz
= P + P
f = 1kHz
= P + P
A = -1V/V
V
P
P
R = 32Ω
L
OUT
L
R
OUT
L
R
R = 16Ω
L
R = 16Ω
L
RIGHT
R = 32Ω
L
R = 32Ω
L
LEFT
0
-100
0
10
20
30
40
50
60
70
0
20
40
60
80
100
10
100
1k
FREQUENCY (Hz)
10k
100k
OUTPUT POWER (mW)
OUTPUT POWER (mW)
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
