Rainbow Electronics MAX9730 - Manual (Page 4)

MAX9730
2.4W, Single-Supply, Class G Power Amplifier
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V CC = CPV DD = SHDN = 3.6V, GND = CPGND = 0V, R IN+ = R IN- = 10kΩ, R FB+ = R FB- = 10kΩ, R FS = 100kΩ, C1 = 4.7µF, C2 =
10µF, R
L
= 8Ω; speaker load resistors (R
L
) are terminated between OUT+ and OUT-, unless otherwise stated; T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T A = +25°C.) (Notes 1, 2)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9730 toc01
FREQUENCY (kHz)
THD+N (%)
10 1 0.1
0.01
0.1
1
10
0.001
0.01 100
V CC = 3V
P OUT = 0.69W
P OUT = 0.33W
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9730 toc02
FREQUENCY (kHz)
THD+N (%)
10 1 0.1
0.01
0.1
1
10
0.001
0.01 100
V CC = 3.6V
P OUT = 0.37W
P OUT = 0.93W
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9730 toc03
FREQUENCY (kHz)
THD+N (%)
10 1 0.1
0.01
0.1
1
10
0.001
0.01 100
V CC = 5V
P OUT = 0.83W
P OUT = 2.08W
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9730 toc04
OUTPUT POWER (W)
THD+N (%)
1.0 0.5
0.01
0.1
1
10
0.001
0 1.5
V CC = 3V
f IN = 1kHz
f IN = 10kHz
f IN = 20Hz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9730 toc05
OUTPUT POWER (W)
THD+N (%)
1.5 1.0 0.5
0.01
0.1
1
10
0.001
0 2.0
V CC = 3.6V
f IN = 1kHz
f IN = 10kHz
f IN = 20Hz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9730 toc06
OUTPUT POWER (W)
THD+N (%)
3.0 2.5 2.0 1.5 1.0 0.5
0.01
0.1
1
10
0.001
0 3.5
f IN = 20Hz
f IN = 10kHz
f IN = 1kHz
V CC = 5V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9730 toc07
FREQUENCY (kHz)
PSRR (dB)
10 1 0.1
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
0.01 100
V RIPPLE = 200mV P-P
POWER EFFICIENCY
vs. OUTPUT POWER
MAX9730 toc08
OUTPUT POWER (W)
EFFICIENCY (%)
1.0 0.5
10
20
30
40
50
60
70
0
0 1.5
V CC = 3V
f IN = 1kHz
POWER EFFICIENCY
vs. OUTPUT POWER
MAX9730 toc09
OUTPUT POWER (W)
EFFICIENCY (%)
1.0 0.5
10
20
30
40
50
60
70
0
0 1.5
V CC = 3.6V
f IN = 1kHz