Datasheet
6 Maxim Integrated
Differential Input DirectDrive
Line Drivers/Headphone Amplifiers
MAX97220A–MAX97220E
Typical Operating Characteristics (continued)
(V
PVDD
= V
SVDD
= V
SVDD2
= 5V, V
PGND
= V
SGND
= 0V, C
BIAS
= 0.1µF, C1 = C2 = 1µF, R
IN
= 10kω, R
F
= 10kω, unless otherwise noted.)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX97220 toc04
FREQUENCY (kHz)
THD+N (%)
1010.1
0.001
0.01
0.1
1
10
100
0.0001
0.01 100
V
PVDD
= 5V
R
L
= 32I
P
OUT
= 20mW
P
OUT
= 90mW
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX97220 toc05
FREQUENCY (kHz)
THD+N (%)
1010.1
0.001
0.01
0.1
1
10
100
0.0001
0.01 100
V
PVDD
= 3.3V
R
L
= 16I
P
OUT
= 10mW
P
OUT
= 25mW
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT VOLTAGE
MAX97220 toc07
OUTPUT VOLTAGE (V
RMS
)
THD+N (dB)
2.52.01.51.00.5
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-130
0 3.0
f
IN
= 1kHz
f
IN
= 10kHz
V
PVDD
= 3.3V
R
L
= 600I
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX97220 toc06
FREQUENCY (kHz)
THD+N (%)
1010.1
0.001
0.01
0.1
1
10
100
0.0001
0.01 100
V
PVDD
= 5V
R
L
= 16I
P
OUT
= 20mW
P
OUT
= 80mW
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT VOLTAGE
MAX97220 toc08
OUTPUT VOLTAGE (V
RMS
)
THD+N (dB)
4.03.52.5 3.01.0 1.5 2.00.5
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-140
0 4.5
f
IN
= 1kHz
f
IN
= 10kHz
V
PVDD
= 5V
R
L
= 10kI
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX97220 toc09
OUTPUT POWER (mW)
THD+N (%)
5040302010
06
0
V
PVDD
= 3.3V
R
L
= 32I
0.001
0.01
0.1
1
10
100
0.0001
f
IN
= 1kHz
f
IN
= 300Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX97220 toc10
OUTPUT POWER (mW)
THD+N (%)
120 140100806040200 180160
V
PVDD
= 5V
R
L
= 32I
0.001
0.01
0.1
1
10
100
0.0001
f
IN
= 1kHz
f
IN
= 300Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX97220 toc11
OUTPUT POWER (mW)
THD+N (%)
5040302010
06
0
V
PVDD
= 3.3V
R
L
= 16I
0.001
0.01
0.1
1
10
100
0.0001
FREQ = 1kHz
FREQ = 300Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX97220 toc12
OUTPUT POWER (mW)
THD+N (%)
120 140100806040200 160
V
PVDD
= 5V
R
L
= 16I
0.001
0.01
0.1
1
10
100
0.0001
FREQ = 1kHz
FREQ = 300Hz