User Manual

MAX9890
Audio Click-Pop Suppressor
_______________________________________________________________________________________ 5
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001
0.01
0.1
1
0.0001
10 100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9890 toc13
V
CC
= 5V
R
L
= 32Ω
OUTPUT POWER = 20mW
OUTPUT POWER = 80mW
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001
0.01
0.1
1
0.0001
10 100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9890 toc14
V
CC
= 3V
R
L
= 16Ω
OUTPUT POWER = 100mW
OUTPUT POWER = 25mW
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001
0.01
0.1
1
0.0001
10 100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9890 toc15
V
CC
= 3V
R
L
= 32Ω
OUTPUT POWER = 60mW
OUTPUT POWER = 20mW
SHDN
2V/div
V
OUT
1V/div
V
HEADPHONE
10mV/div
40ms/div
STARTUP WAVEFORM (DC)
MAX9890 toc16
SHDN
2V/div
V
OUT
1V/div
V
HEADPHONE
10mV/div
10s/div
SHUTDOWN WAVEFORM (DC)
MAX9890 toc17
SHDN
2V/div
V
OUT
1V/div
V
HEADPHONE
1V/div
40ms/div
STARTUP WAVEFORM (AC)
MAX9890 toc18
SHDN
2V/div
V
OUT
1V/div
V
HEADPHONE
1V/div
1s/div
SHUTDOWN WAVEFORM (AC)
MAX9890 toc19
Typical Operating Characteristics (continued)
(V
CC
= 3V, C
CEXT
= 0.1µF, typical values are at T
A
= +25°C, unless otherwise noted.)