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MAX13330GEET

Description
Automotive DirectDrive Headphone Amplifiers with Output Protection and Diagnostics
File Size380KB,15 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX13330GEET Overview

Automotive DirectDrive Headphone Amplifiers with Output Protection and Diagnostics

19-4341; Rev 3; 7/11
Automotive DirectDrive Headphone Amplifiers
with Output Protection and Diagnostics
General Description
The MAX13330/MAX13331 stereo headphone amplifiers
are designed for automotive applications requiring out-
put short-circuit and ESD protection to battery/ground
with diagnostics. These devices use Maxim’s unique
DirectDrive
®
architecture to produce a ground-refer-
enced output from a single supply, eliminating the need
for large DC-blocking capacitors, saving board space
and component height. The gain of the amplifier is set
internally (-1.5V/V) on the MAX13330 or adjusted exter-
nally with resistors on the MAX13331.
The MAX13330/MAX13331 deliver 120mW per channel
into a 16Ω load or 135mW into a 32Ω load and have a
low 0.01% THD+N. Low output impedance and the effi-
cient integrated charge pump allows the device to drive
loads as low as 8Ω, enabling the use of small loud-
speakers. An 80dB at 217Hz PSRR allows these
devices to operate from noisy digital supplies without
an additional linear regulator. These devices include
±15kV Human Body Model ESD protection and short-
circuit protection up to +45V at the headphone outputs.
Comprehensive click-and-pop circuitry suppresses
audible clicks and pops on startup and shutdown. A
low-power shutdown mode reduces the supply current
to 3µA (typ).
The MAX13330/MAX13331 are specified from -40°C to
+105°C AEC-Q100 Level 2 automotive temperature
range and are available in a 16-pin QSOP package.
4V to 5.5V Single-Supply Operation
2MHz Charge Pump Prevents AM Radio
Interference
Ground-Referenced Outputs Eliminate Bulky DC-
Blocking Capacitors
Short-to-Ground and Battery (V
BAT
up to +45V)
Output Protection, Load Dump Protection
Short-Circuit Diagnostic Output
Adjustable Gain (MAX13331) or Fixed -1.5V/V Gain
(MAX13330)
125mW per Channel into 32Ω at 0.01% THD+N
Integrated Click-and-Pop Suppression
High PSRR Eliminates LDO
No Degradation of Low-Frequency Response Due
to Output Capacitors
±15kV Human Body Model ESD Protection for
Output Pins
Features
MAX13330/MAX13331
Ordering Information
PART
MAX13330GEE/V+T
MAX13331GEE/V+T
GAIN
-1.5V/V
TEMP
RANGE
PIN-
PACKAGE
-40°C to +105°C 16 QSOP
Applications
Automotive Entertainment Systems
Automotive Rear Seat Entertainment Systems
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
Externally
-40°C to +105°C 16 QSOP
Set
/V denotes an automotive qualified part.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Typical Application Circuits appear at end of data sheet.
Simplified Block Diagram
INL
MAX13330
LEFT-CHANNEL
AUDIO IN
Pin Configuration
1
2
3
4
5
6
7
8
MAX13330
MAX13331
+
16
15
14
13
12
11
10
9
OUTL
PGND
V
SS
OUTR
DIAG
CPVSS
C1N
PGND
SGND
OUTPUT PROTECTION & DIAGNOSTICS
INR
SGND
DIAGNOSTICS
OUTPUT
SHDN
CLICK-AND-POP
SUPPRESSION
V
DD
SHDN
CPVDD
C1P
RIGHT-CHANNEL
AUDIO IN
QSOP
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

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