Datasheet

Stereo, High-Power, Class D Amplifiers
MAX98400A/MAX98400B
10
Typical Operating Characteristics (continued)
(MAX98400A, V
PVDD
= 18V, V
SHDN
= 5V, LIM_TH = V
S
, TEMPLOCK = unconnected; G1 = GND, G2 = open (gain = 20.1dB), C
IN
=
C
REL
= C1 = C2 = 1FF, typical values are at T
A
= +25NC, unless otherwise noted.)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (MONO)
MAX98400 toc28
OUTPUT POWER (W)
THD+N (%)
20161284
0.01
0.1
1
10
0.001
0 24
f = 6kHz
f = 100Hz
f = 1kHz
V
PVDD
= 12V,
4I LOAD
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (MONO)
MAX98400 toc29
OUTPUT POWER (W)
THD+N (%)
403224168
0.01
0.1
1
10
0.001
0 48
f = 6kHz
f = 100Hz
f = 1kHz
V
PVDD
= 18V,
4I LOAD
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (MONO)
MAX98400 toc30
OUTPUT POWER (W)
THD+N (%)
70605040302010
0.01
0.1
1
10
0.001
0 80
f = 6kHz
f = 100Hz
f = 1kHz
V
PVDD
= 24V,
4I LOAD
EFFICIENCY vs. OUTPUT POWER (MONO)
MAX98400 toc31
TOTAL OUTPUT POWER (W)
EFFICIENCY (%)
15105
10
20
30
40
50
60
70
80
90
100
0
0 20
V
PVDD
= 12V,
4I LOAD
MAX98400 toc32
353020 2510 1550 40
EFFICIENCY vs. OUTPUT POWER (MONO)
TOTAL OUTPUT POWER (W)
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
0
V
PVDD
= 18V,
4I LOAD
MAX98400 toc33
353020 2510 1550 40
EFFICIENCY vs. OUTPUT POWER (MONO)
TOTAL OUTPUT POWER (W)
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
0
V
PVDD
= 24V,
4I LOAD
MAXIMUM OUTPUT POWER
vs. PVDD (WITH THERMAL SHUTDOWN, MONO)
MAX98400 toc34
PVDD SUPPLY VOLTAGE (V)
MAXIMUM P
OUT
(W)
242016128 28
10
20
30
40
50
60
70
80
90
100
0
4I LOAD, THERMAL FOLD DISABLED
10% THD+N
1% THD+N
OUTPUT POWER vs. LOAD (MONO)
MAX98400 toc35
LOAD (I)
P
OUT
(W)
908070605040302010
5
10
15
20
25
0
0 100
V
PVDD
= 12V
10% THD+N
1% THD+N
OUTPUT POWER vs. LOAD (MONO)
MAX98400 toc36
P
OUT
(W)
5
10
15
20
25
30
35
40
45
50
0
LOAD (I)
9080706050403020100 100
V
PVDD
= 18V
10% THD+N
1% THD+N