Datasheet

6 ______________________________________________________________________________________
MAX98306
Stereo 3.7W Class D Amplifier
Typical Operating Characteristics (continued)
(V
PVDD
= V
SHDN
= 5.0V, V
PGND
= 0V, A
V
= 12dB, R
L
= J, R
L
connected between OUT_+ to OUT_-, 20Hz to 22kHz AC measurement
bandwidth, T
A
= +25NC, unless otherwise noted.)
OUTPUT POWER vs. SUPPLY VOLTAGE
MAX98306 toc13
OUTPUT POWER (W)
4.5
5.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
SUPPLY VOLTAGE (V)
5.04.54.03.53.02.5 5.5
THD+N = 1%
THD+N = 10%
f = 1kHz
Z
LOAD
= 3I + 22µH
GAIN vs. FREQUENCY
MAX98306 toc14
FREQUENCY (Hz)
AMPLITUDE (dB)
10k1k100
-30
-20
-10
0
10
20
30
-40
10 100k
EFFICIENCY vs. OUTPUT POWER
MAX98306 toc15
OUTPUT POWER (W)
EFFICIENCY (%)
1.51.00.5
10
20
30
40
50
60
70
80
90
100
0
0 2.0
Z
LOAD
= 8I + 68µH
Z
LOAD
= 4I + 33µH
Z
LOAD
= 3I + 22µH
V
PVDD
= 3.7V
EFFICIENCY vs. OUTPUT POWER
MAX98306 toc16
OUTPUT POWER (W)
3.5
3.02.0 2.51.0 1.50.50 4.0
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
0
Z
LOAD
= 8I + 68µH
Z
LOAD
= 4I + 33µH
Z
LOAD
= 3I + 22µH
V
PVDD
= 5.0V
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX98306 toc17
SUPPLY CURRENT (mA)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
SUPPLY VOLTAGE (V)
5.04.54.03.53.02.5 5.5
CROSSTALK vs. FREQUENCY
MAX98306 toc18
FREQUENCY (Hz)
CROSSTALK (dB)
10k1k100
-120
-100
-80
-60
-40
-20
0
-140
10 100k
RIGHT TO LEFT
LEFT TO RIGHT
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
MAX98306 toc19
CMRR (dB)
10
20
30
40
50
60
70
80
90
100
0
FREQUENCY (Hz)
10k1k10010 100k
V
PVDD
= 3.7V
POWER-SUPPLY REJECTION
RATIO vs. FREQUENCY
MAX98306 toc20
PSRR (dB)
10
20
30
40
50
60
70
80
90
100
0
FREQUENCY (Hz)
10k1k10010 100k
V
RIPPLE
= 200mV
P-P
V
PVDD
= 3.7V
Z
LOAD
= 8I + 68µH
WIDEBAND vs. FREQUENCY
MAX98306 toc21
FREQUENCY (MHz)
AMPLITUDE (dBV)
101
-80
-60
-40
-20
0
20
-100
0.1 100