Datasheet

Stereo, High-Power, Class D Amplifiers
MAX98400A/MAX98400B
9
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.)
INBAND OUTPUT SPECTRUM
MAX98400 toc19
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBV)
15105
-100
-80
-60
-40
-20
0
-120
0 20
8I LOAD
FREQUENCY (MHz)
OUTPUT AMPLITUDE (dBV)
1010.1 100
WIDEBAND OUTPUT SPECTRUM
MAX98400 toc20
-100
-80
-60
-40
-20
0
-120
RBW = 100Hz
MAX98400 toc21
OUTPUT
2V/div
4ms/div
SHDN ON/OFF RESPONSE
SHDN
2V/div
SUPPLY CURRENT
vs. PVDD SUPPLY VOLTAGE
MAX98400 toc22
PVDD SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
2420
I
PVDD
V
S
= 5V
1612
2
4
6
8
10
12
14
0
8 28
I
VS
SUPPLY CURRENT
vs. V
S
SUPPLY VOLTAGE
MAX98400 toc23
V
S
SUPPLY VOLTAGE (V)
5.25
5.004.75 5.50
SUPPLY CURRENT (mA)
2
4
6
8
10
12
14
0
I
PVDD
V
PVDD
= 18V
I
VS
SHUTDOWN CURRENT
vs. PVDD SUPPLY VOLTAGE
MAX98400 toc24
PVDD SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (µA)
24201612
2
4
6
8
10
12
14
0
8 28
I
PVDD_SHDN
V
S
= 5V
I
VS_SHDN
SHUTDOWN CURRENT
vs. V
S
SUPPLY VOLTAGE
MAX98400 toc25
V
S
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (µA)
5.255.00
2
4
6
8
10
12
14
0
4.75 5.50
I
PVDD_SHDN
I
VS_SHDN
V
PVDD
= 18V
PVDD SUPPLY VOLTAGE (V)
MAXIMUM P
OUT
(W)
2420
8I LOAD
1612
10
20
30
40
50
60
0
8 28
MAXIMUM OUTPUT POWER
vs. PVDD (NO THERMAL SHUTDOWN)
MAX98400 toc26
4I LOAD
THERMAL FOLDBACK DISABLED,
BOTH CHANNELS DRIVEN
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (MONO)
MAX98400 toc27
FREQUENCY (kHz)
THD+N (%)
1010.1
0.01
0.1
1
0.001
0.01 100
P
OUT
= 8W
P
OUT
= 1W
V
PVDD
= 12V
4I LOAD