Datasheet
MAX13330/MAX13331
Automotive DirectDrive Headphone Amplifiers
with Output Protection and Diagnostics
_______________________________________________________________________________________ 5
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX13330/31 toc10
OUTPUT POWER (mW)
THD+N (%)
12550 15025
0.01
0.1
1
10
0.001
0 10075 175
V
DD
= 5V
R
L
= 16Ω
f
IN
= 10kHz
f
IN
= 1kHz
f
IN
= 100Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX13330/31 toc11
OUTPUT POWER (mW)
THD+N (%)
50 10025 75
0.01
0.1
1
10
0.001
0 125
V
DD
= 4V
R
L
= 32Ω
f
IN
= 10kHz
f
IN
= 1kHz
f
IN
= 100Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX13330/31 toc12
OUTPUT POWER (mW)
THD+N (%)
12550 15025
0.01
0.1
1
10
0.001
0 10075 175
V
DD
= 5V
R
L
= 32Ω
f
IN
= 10kHz
f
IN
= 1kHz
f
IN
= 100Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX13330/31 toc13
FREQUENCY (kHz)
THD+N (%)
0.1 1 10
0.001
0.01
0.1
1
0.0001
0.01 100
V
DD
= 5V
R
L
= 1kΩ
V
OUT_
= 2V
RMS
V
OUT_
= 1V
RMS
OUTPUT POWER vs. SUPPLY VOLTAGE
MAX13330/31 toc14
SUPPLY VOLTAGE (V)
OUTPUT POWER (mW)
5.254.754.50 5.004.25
60
120
180
40
100
160
20
80
140
0
4.00 5.50
f
IN
= 1kHz
1% THD+N
R
L
= 32Ω
R
L
= 16Ω
R
L
= 8Ω
OUTPUT POWER vs. LOAD RESISTANCE
MAX13330/31 toc15
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
10 100
60
120
200
40
100
160
180
20
80
140
0
0 1000
f
IN
= 1kHz
10% THD+N
V
DD
= 4V
1% THD+N
V
DD
= 4V
1% THD+N
V
DD
= 5V
10% THD+N
V
DD
= 5V
POWER DISSIPATION vs.
OUTPUT POWER PER CHANNEL
MAX13330/31 toc16
OUTPUT POWER PER CHANNEL (mW)
POWER DISSIPATION (mW)
1006040 8020
300
600
800
200
500
100
400
700
0
0 120
V
DD
= 4V
f
IN
= 1kHz
R
L
= 32Ω
R
L
= 16Ω
R
L
= 8Ω
POWER DISSIPATION vs.
OUTPUT POWER PER CHANNEL
MAX13330/31 toc17
OUTPUT POWER PER CHANNEL (mW)
POWER DISSIPATION (mW)
80 14060 120 16020 10040
400
800
1200
200
600
1000
0
0 180
V
DD
= 5V
f
IN
= 1kHz
R
L
= 32Ω
R
L
= 16Ω
R
L
= 8Ω
Typical Operating Characteristics (continued)
(V
DD
= V
CPVDD
= 5V, V
SGND
= V
PGND
= 0V, C1 = C2 = 1µF, R
L
= ∞, gain = -1.5V/V, THD+N measurement bandwidth = 22Hz to 22kHz,
T
A
= +25°C, unless otherwise noted.)