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MAX98372ETJ+T

Description
Audio AmplifierDigital Input Class D Amplifier with DHT and Brownout Protection
Categorysemiconductor    Audio IC    Audio amplifier   
File Size3MB,100 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric Compare View All

MAX98372ETJ+T Overview

Audio AmplifierDigital Input Class D Amplifier with DHT and Brownout Protection

MAX98372ETJ+T Parametric

Parameter NameAttribute value
MakerMaxim
Product Categoryaudio amplifier
Shipping restrictionsThis product may require additional documentation for export from the United States.
seriesMAX98372
productAudio Amplifiers
kindClass-D
Output Power19 W
Installation styleSMD/SMT
typeMono Class D Audio Amplifier
Package/boxTQFN-32
Audio - Load Impedance8 Ohms
THD + noise0.2 %
Supply voltage - max.18 V
Supply voltage - min.5.5 V
Minimum operating temperature- 40 C
Maximum operating temperature+ 85 C
EncapsulationCut Tape
EncapsulationMouseReel
EncapsulationReel
Output current13 mA
Number of channels1 Channel
closureShutdown
Factory packaging quantity2500
EVALUATION KIT AVAILABLE
MAX98372
Digital Input Class D Amplifier
with DHT and Brownout Protection
General Description
The MAX98372 is a high-efficiency, mono Class D audio
amplifier featuring dynamic headroom tracking (DHT)
and brownout protection. DHT automatically optimizes
the headroom available to the Class D amplifier as the
power supply voltage varies, due to sudden transients
and declining battery life to maintain a consistent listening
experience. A wide 5.5V to 18V supply range allows the
device to reach 19W into an 8Ω load.
The MAX98372’s flexible digital audio interface (DAI)
supports I
2
S, left-justified, and TDM formats. The digital
audio interface accepts 32kHz, 44.1kHz, 48kHz, 88.2kHz,
and 96kHz sample rates with 16-/24-/32-bit data sup-
ported for all data formats. In TDM mode, the device can
support up to 16 channels of audio data. A unique clocking
structure eliminates the need for an external MCLK signal
that is typically needed for PCM communication. This
reduces pin count and simplifies board layout.
Active emissions limiting with edge rate control minimizes
EMI and eliminates the need for output filtering found in
traditional Class D devices.
An 8-bit PVDD supply voltage ADC enables the dynamic
headroom tracking circuit. DHT optimizes audio program
peak behavior as the supply voltage varies and provides
flexible user-defined parameters.
Thermal foldback protection ensures robust behavior
when the thermal limits of the device are exercised. The
circuit can be enabled to automatically reduce the output
power above a user specified temperature. This allows for
uninterrupted music playback even at high ambient tem-
peratures. Traditional thermal protection is also available
in addition to robust overcurrent protection.
All MAX98372 control is performed using a standard
2-wire, I
2
C interface. One of sixteen slave addresses can
be selected through two, four-level address pins. The IC is
available in a 0.4mm pitch, 30-bump WLP and 32-pin TQFN
packages. It is specified over the extended, -40°C to +85°C
temperature range.
Benefits and Features
Wide Supply Range (5.5V to 18V)
Dynamic Headroom Tracking Maintains a Consistent
Listening Experience
Integrated Thermal Foldback Allows Robust
Operation in a WLP Package
Remote Output Sensing Allows Up to 20dB THD+N
Improvement When Ferrites Are Used
Class D Edge Rate Control Enables Filterless
Operation
110dB A-Weighted Dynamic Range
Output Power at 1% THD+N:
15.7W into 8Ω, V
PVDD
= 17V
13.2W into 4Ω, V
PVDD
= 12V
Output Power at 10% THD+N
19W into 8Ω, V
PVDD
= 17V
15.8W into 4Ω, V
PVDD
= 12V
Speaker Amplifier Efficiency
91% at 10W into 8Ω, V
PVDD
= 12V
81% at 15W into 4Ω, V
PVDD
= 12V
ALC Provides Battery Brownout Protection
Extensive Click-and-Pop Suppression
30-Bump, 0.4mm WLP and 32-Pin TQFN Packages
Simplified Block Diagram
DVDD
PVDD
MAX98372
I
2
C
DHT
THERMAL
FOLDBACK
ALC
DIGITAL
AUDIO
INTERFACE
D
V
O
L
DAC
P
G
A
DSP
CLASS D
Applications
Tablets
Notebook Computers
Soundbars
Ordering Information
appears at end of data sheet.
19-7734; Rev 3; 8/17

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Description Audio AmplifierDigital Input Class D Amplifier with DHT and Brownout Protection Audio Amplifiers Digital Input ClassD Amplifier Audio AmplifierDigital Input Class D Amplifier with DHT and Brownout Protection Audio AmplifierDigital Input class D amp with DHT and Brownout Protection
Product Category audio amplifier Audio Amplifiers audio amplifier audio amplifier
Maker Maxim - Maxim Maxim
series MAX98372 - MAX98372 MAX98372
product Audio Amplifiers - Audio Amplifiers Audio Amplifiers
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