Datasheet

MAX9759
3.2W, High Efficiency, Low-EMI, Filterless,
Class D Audio Amplifier
_______________________________________________________________________________________ 7
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. COMMON-MODE VOLTAGE
MAX9759 toc24
COMMON-MODE VOLTAGE (V)
THD+N (%)
321
0.01
0.1
1
10
100
0.001
04
V
DD
= 5V
R
L
= 8
Ω
f
IN
= 1kHz
P
OUT
= 300mW
DIFF INPUT
V
DD
= 5V
R
L
= 8
Ω
f
IN
= 1kHz
P
OUT
= 300mW
DIFF INPUT
V
DD
= 3.3V
R
L
= 8
Ω
f
IN
= 1kHz
P
OUT
= 300mW
DIFF INPUT
Typical Operating Characteristics (continued)
(V
DD
= PV
DD
= SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = V
DD
(SSM), unless otherwise noted. Gain = 12dB (G1 = 0, G2 = 1).
THD+N measurement bandwidth: 22Hz to 22kHz. Typical values are at T
A
= +25°C.) (See Typical Operating Circuit)
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9759 toc19
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
5.5
5.0
3.5 4.0
4.5
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
3.0
R
L
= 4
Ω
f
IN
= 1kHz
THD+N = 10%
THD+N = 1%
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9759 toc20
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
5.55.0
4.54.03.5
0.5
1.0
1.5
2.0
2.5
0
3.0
R
L
= 8
Ω
f
IN
= 1kHz
THD+N = 10%
THD+N = 1%
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9759 toc21
LOAD RESISTANCE (
Ω
)
OUTPUT POWER (W)
10
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
1100
V
DD
= 5V
f
IN
= 1kHz
10% THD+N
1% THD+N
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9759 toc22
LOAD RESISTANCE (
Ω
)
OUTPUT POWER (W)
10
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
1100
V
DD
= 3.3V
f
IN
= 1kHz
10% THD+N
1% THD+N
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. COMMON-MODE VOLTAGE
MAX9759 toc23
COMMON-MODE VOLTAGE (V)
THD+N (%)
321
0.01
0.1
1
10
100
0.001
04
V
DD
= 5V
R
L
= 8
Ω
f
IN
= 1kHz
P
OUT
= 300mW
DIFF INPUT