Datasheet

MAX13330/MAX13331
Automotive DirectDrive Headphone Amplifiers
with Output Protection and Diagnostics
_______________________________________________________________________________________ 3
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 SYMBOL CONDITIONS MIN TYP MAX UNITS
Short-to-SGND Threshold 130 mA
Short-to-V
BAT
Threshold 130 mA
AMPLIFIERS
Voltage Gain A
V
MAX13330 -1.48 -1.5 -1.52 V/V
Gain Matching MAX13330 ±0.2 %
Input Offset Voltage ±1 ±6 mV
Input Bias Current V
IN_
= 0V 50 nA
Input Impedance R
IN
MAX13330 20 30 k
DC, V
DD
= 4.0V to 5.5V, input referred -86
Power-Supply Rejection Ratio PSRR
f =1kHz, V
RIPPLE
= 100mV
P-P
-80
dB
R
L
= 8 75
R
L
= 16 120
Output Power Per Channel P
OUT_
THD+N = 1%;
V
DD
= V
CPVDD
= 5V;
f
IN
= 1kHz
R
L
= 32 135
mW
Output Voltage V
OUT_
R
L
= 1k 2 V
RMS
Output Impedance in Shutdown 14 k
R
L
= 16, P
OUT
= 100mW, f = 1kHz 0.03 %
Total Harmonic Distortion Plus
Noise
THD+N
R
L
= 32, P
OUT
= 125mW, f = 1kHz 0.01 %
Signal-to-Noise Ratio SNR R
L
= 32, P
OUT
= 135mW, f = 22Hz to 22kHz 100 dB
Noise V
n
f = 22Hz to 22kHz bandwidth; inputs
AC-coupled to grounded
6 μV
RMS
Slew Rate SR 0.3 V/μs
Maximum Capacitive Load C
L
No sustained oscillation 3000 pF
Into shutdown -80
Click-and-Pop Level K
CP
Peak voltage, T
A
=
+25°C, A-weighted,
32 samples per
second; Inputs AC-
coupled to ground
Out of shutdown -60
dB
Charge-Pump Oscillator
Frequency
f
OSC
1.9 2.2 2.5 MHz
Crosstalk R
L
= 32, V
IN
= 200mV
P-P
, f = 10kHz -75 dB
Thermal-Shutdown Temperature +155 °C
Thermal-Shutdown Hysteresis 10 °C
ESD Protection Human Body Model (OUTR and OUTL) ±15 kV
Note 2: All devices are 100% tested at T
A
= +25°C; specifications over temperature limits are guaranteed by design and QA
sampling.