Maxim Integrated MAX9778 - Manual (Page 5)

MAX9777/MAX9778
Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
_______________________________________________________________________________________ 5
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
MAX9777/78 toc01
FREQUENCY (Hz)
THD+N (%)
10k 1k 100
0.01
0.1
1
0.001
10 100k
R
L
= 3 Ω
A V = 2V/V
P OUT = 2.5W P OUT = 2W
P OUT = 500mW P OUT = 1W
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
MAX9777/78 toc02
FREQUENCY (Hz)
THD+N (%)
10k 1k 100
0.01
0.1
1
0.001
10 100k
R L = 3 Ω
A
V
= 4V/V
P OUT = 2.5W
P OUT = 2W
P OUT = 500mW P OUT = 1W
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
MAX9777/78 toc03
FREQUENCY (Hz)
THD+N (%)
10k 1k 100
0.01
0.1
1
0.001
10 100k
R L = 4 Ω
A V = 2V/V
P OUT = 2W
P OUT = 1W
P
OUT
= 500mW
P OUT = 250mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
MAX9777/78 toc04
FREQUENCY (Hz)
THD+N (%)
10k 1k 100
0.01
0.1
1
0.001
10 100k
R L = 4 Ω
A
V
= 4V/V
P OUT = 250mW
P OUT = 2W
P OUT = 1W
P OUT = 500mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
MAX9777/78 toc05
FREQUENCY (Hz)
THD+N (%)
10k 1k 100
0.01
0.1
1
0.001
10 100k
R L = 8 Ω
A V = 2V/V
P
OUT
= 250mW
P OUT = 1.2W
P OUT = 1W
P OUT = 500mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
MAX9777/78 toc06
FREQUENCY (Hz)
THD+N (%)
10k 1k 100
0.01
0.1
1
0.001
10 100k
P OUT = 250mW
P OUT = 1.2W
P OUT = 1W
P OUT = 500mW
R L = 8 Ω
A V = 4V/V
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (SPEAKER MODE)
MAX9777/78 toc07
OUTPUT POWER (W)
THD+N (%)
3 2 1
0.01
10
1
0.1
100
0.001
0 4
A
V
= 2V/V
R L = 3 Ω
f = 1kHz
f = 20Hz
f = 10kHz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (SPEAKER MODE)
MAX9777/78 toc08
OUTPUT POWER (W)
THD+N (%)
3 2 1
0.01
10
1
0.1
100
0.001
0 4
A V = 4V/V
R
L
= 3 Ω
f = 20Hz
f = 1kHz
f = 10kHz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (SPEAKER MODE)
MAX9777/78 toc09
OUTPUT POWER (W)
THD+N (%)
2.5 3.0 2.0 1.5 1.0 0.5
0.01
10
1
0.1
100
0.001
0 3.5
A V = 2V/V
R
L
= 4 Ω
f = 20Hz
f = 1kHz
f = 10kHz
Typical Operating Characteristics
(V DD = PV DD = 5V, GND = PGND = 0V, V SHDN = 5V, C BIAS = 1µF, T A = +25°C, unless otherwise noted.)