Operating Temperature Range .........................-40°C to +105°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
QSOP
Junction-to-Ambient Thermal Resistance (θ
JA
) ......103.7°C/W
Junction-to-Case Thermal Resistance (θ
JC
) ................37°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial.
ELECTRICAL CHARACTERISTICS
(V
DD
= V
CPVDD
= +5V, V
SGND
= V
PGND
= 0V,
SHDN
= V
DD
, C1 = C2 = 1µF, R
L
=
∞,
resistive load referenced to ground, for
MAX13330 gain = -1.5V/V (internally set), for MAX13331 gain = -1.5V/V (R
IN
= 30kΩ, R
FB
= 45kΩ), T
A
= T
J
= -40°C to +105°C, unless
otherwise noted. Typical values are at T
A
= +25°C, unless otherwise noted.) (Note 2)
PARAMETER
GENERAL
Amplifier Supply Voltage Range
Charge-Pump Supply Voltage
Range
Charge-Pump Output Voltage
Quiescent Supply Current
Shutdown Supply Current
SHDN
Input-Logic High
SHDN
Input-Logic Low
SHDN
Input Leakage Current
SHDN
to Full Operation Time
DIAGNOSTICS
No fault
OUTR short to
SGND
Diagnostic Output Voltage
V
DIAG
R
DIAG
= ,
T
A
= +25°C
OUTL short to
SGND
OUTR short to
V
BAT
OUTL short to
V
BAT
2
SYMBOL
V
DD
V
CPVDD
V
CPVSS
I
DD
I
SHDN
V
IH
V
IL
R
L
=
CONDITIONS
MIN
4.0
4.0
TYP
MAX
5.5
5.5
UNITS
V
V
V
mA
-V
DD
10
10
2
0.8
-1
+1
100
0.02 x
V
DD
0.22 x
V
DD
0.47 x
V
DD
0.72 x
V
DD
0.97 x
V
DD
0.25 x
V
DD
0.50 x
V
DD
0.75 x
V
DD
0.28 x
V
DD
0.53 x
V
DD
0.78 x
V
DD
μA
V
V
μA
μs
t
SON
V
Maxim Integrated
MAX13330/MAX13331
Automotive DirectDrive Headphone Amplifiers
with Output Protection and Diagnostics
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= V
CPVDD
= +5V, V
SGND
= V
PGND
= 0V,
SHDN
= V
DD
, C1 = C2 = 1µF, R
L
=
∞,
resistive load referenced to ground, for
MAX13330 gain = -1.5V/V (internally set), for MAX13331 gain = -1.5V/V (R
IN
= 30kΩ, R
FB
= 45kΩ), T
A
= T
J
= -40°C to +105°C, unless
otherwise noted. Typical values are at T
A
= +25°C, unless otherwise noted.) (Note 2)
PARAMETER
Short-to-SGND Threshold
Short-to-V
BAT
Threshold
AMPLIFIERS
Voltage Gain
Gain Matching
Input Offset Voltage
Input Bias Current
Input Impedance
Power-Supply Rejection Ratio
R
IN
PSRR
V
IN_
= 0V
MAX13330
DC, V
DD
= 4.0V to 5.5V, input referred
f =1kHz, V
RIPPLE
= 100mV
P-P
THD+N = 1%;
V
DD
= V
CPVDD
= 5V;
f
IN
= 1kHz
R
L
= 1k
R
L
= 16 , P
OUT
= 100mW, f = 1kHz
R
L
= 32 , P
OUT
= 125mW, f = 1kHz
R
L
= 32 , P
OUT
= 135mW, f = 22Hz to 22kHz
f = 22Hz to 22kHz bandwidth; inputs
AC-coupled to grounded
No sustained oscillation
Peak voltage, T
A
=
+25°C, A-weighted,
32 samples per
second; Inputs AC-
coupled to ground
Into shutdown
-80
dB
Out of shutdown
1.9
R
L
= 32 , V
IN
= 200mV
P-P
, f = 10kHz
-60
2.2
-75
+155
10
Human Body Model (OUTR and OUTL)
±15
2.5
MHz
dB
°C
°C
kV
R
L
= 8
R
L
= 16
R
L
= 32
20
A
V
MAX13330
MAX13330
-1.48
-1.5
±0.2
±1
50
30
-86
-80
75
120
135
2
14
THD+N
SNR
V
n
SR
C
L
0.03
0.01
100
6
0.3
3000
V
RMS
k
%
%
dB
μV
RMS
V/μs
pF
mW
±6
-1.52
V/V
%
mV
nA
k
dB
SYMBOL
CONDITIONS
MIN
130
130
TYP
MAX
UNITS
mA
mA
Output Power Per Channel
Output Voltage
Output Impedance in Shutdown
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Noise
Slew Rate
Maximum Capacitive Load
P
OUT_
V
OUT_
Click-and-Pop Level
K
CP
Charge-Pump Oscillator
Frequency
Crosstalk
Thermal-Shutdown Temperature
Thermal-Shutdown Hysteresis
ESD Protection
f
OSC
Note 2:
All devices are 100% tested at T
A
= +25°C; specifications over temperature limits are guaranteed by design and QA
sampling.
Maxim Integrated
3
MAX13330/MAX13331
Automotive DirectDrive Headphone Amplifiers
with Output Protection and Diagnostics
Typical Operating Characteristics
(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.)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX13330/31 toc01
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX13330/31 toc02
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
V
DD
= 4V
R
L
= 16Ω
MAX13330/31 toc03
1
V
DD
= 4V
R
L
= 8Ω
P
OUT
= 25mW
1
V
DD
= 5V
R
L
= 8Ω
1
0.1
THD+N (%)
0.1
THD+N (%)
P
OUT
= 25mW
THD+N (%)
0.1
P
OUT
= 25mW
0.01
P
OUT
= 45mW
0.01
P
OUT
= 60mW
0.01
P
OUT
= 75mW
0.001
0.01
0.1
1
FREQUENCY (kHz)
10
100
0.001
0.01
0.1
1
FREQUENCY (kHz)
10
100
0.001
0.01
0.1
1
FREQUENCY (kHz)
10
100
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX13330/31 toc04
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX13330/31 toc05
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
V
DD
= 5V
R
L
= 32Ω
MAX13330/31 toc06
1
V
DD
= 5V
R
L
= 16Ω
1
V
DD
= 4V
R
L
= 32Ω
1
0.1
THD+N (%)
THD+N (%)
P
OUT
= 25mW
THD+N (%)
P
OUT
= 50mW
0.1
0.1
P
OUT
= 50mW
0.01
P
OUT
= 100mW
0.01
P
OUT
= 70mW
0.01
P
OUT
= 125mW
0.001
0.01
0.1
1
FREQUENCY (kHz)
10
100
0.001
0.01
0.1
1
FREQUENCY (kHz)
10
100
0.001
0.01
0.1
1
FREQUENCY (kHz)
10
100
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX13330/31 toc07
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX13330/31 toc08
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
V
DD
= 4V
R
L
= 16Ω
1
f
IN
= 10kHz
THD+N (%)
f
IN
= 1kHz
0.1
MAX13330/31 toc09
10
V
DD
= 4V
R
L
= 8Ω
10
V
DD
= 5V
R
L
= 8Ω
10
1
THD+N (%)
f
IN
= 1kHz
f
IN
= 10kHz
THD+N (%)
1
f
IN
= 1kHz
0.1
0.01
f
IN
= 100Hz
f
IN
= 100Hz
0.01
0
25
50
75
0
25
50
75
100
125
OUTPUT POWER (mW)
OUTPUT POWER (mW)
0.001
0
25
f
IN
= 10kHz
0.1
f
IN
= 100Hz
50
75
100
125
0.01
OUTPUT POWER (mW)
4
Maxim Integrated
MAX13330/MAX13331
Automotive DirectDrive Headphone Amplifiers
with Output Protection and Diagnostics
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,
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