Datasheet

MAX9715
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
DD
= 5.0V, C
VDD
= 3 x 0.1μF, C
BIAS
= 1μF, C
INL
= C
INR
= 1μF, A
V
= +10.5dB, T
A
= +25°C, unless otherwise noted.) (See the
Typical Operating Circuit/Functional Diagram )
100
0.001
0 0.5 1.0 1.5 2.52.0
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
0.01
0.1
1
10
MAX9715toc04
OUTPUT POWER (W)
THD+N (%)
f
IN
= 1kHz
f
IN
= 10kHz
V
DD
= 5V
R
L
= 8
Ω
f
IN
= 20Hz
EFFICIENCY
vs. OUTPUT POWER
MAX9715toc05
OUTPUT POWER (W)
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
0
0
1
23
4
5
6
V
DD
= 5V
f
IN
= 1kHz
P
OUT
= P
OUTL
+ P
OUTR
OUTPUTS IN-PHASE
R
L
= 4
Ω
R
L
= 8
Ω
EFFICIENCY
vs. SUPPLY VOLTAGE
MAX9715 toc06
SUPPLY VOLTAGE (V)
EFFICIENCY (%)
5.35.04.8
10
20
30
40
50
60
70
80
90
100
0
4.5 5.5
R
L
= 4
Ω
f
IN
= 1kHz
P
OUT
= P
OUTL
+ P
OUTR
OUTPUTS IN-PHASE
THD+N = 1%
R
L
= 8
Ω
0
11k10010
OUTPUT POWER
vs. LOAD RESISTANCE
4.0
2.0
1.0
3.5
3.0
1.5
0.5
2.5
MAX9715toc07
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)
THD+N = 10%
THD+N = 1%
V
DD
= 5V
f
IN
= 1kHz
L
LOAD
= 33μH
0
1.5
1.0
0.5
2.5
2.0
4.5
4.0
3.5
3.0
5.0
4.5 4.8 5.0 5.3 5.5
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9715toc08
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
THD+N = 1%
f
IN
= 1kHz
R
L
= 4Ω
THD+N = 10%
0
0.5
1.0
2.0
1.5
2.5
4.5 4.8 5.0 5.3 5.5
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9715toc09
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
THD+N = 1%
f
IN
= 1kHz
R
L
= 8Ω
THD+N = 10%