Datasheet > MAX98372

MAX98372

更新时间： 2024-11-30 02:55:47

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
100页	3293K
描述
Digital Input Class D Amplifier with DHT and Brownout Protection

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MAX98372 数据手册

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MAX98372

Digital Input Class D Amplifier

with DHT and Brownout Protection

General Description

Beneﬁts and Features

● Wide Supply Range (5.5V to 18V)

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.

● 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

• 13.2W into 4Ω, V

● Output Power at 10% THD+N

• 19W into 8Ω, V = 17V

• 15.8W into 4Ω, V

● Speaker Amplifier Efficiency

• 91% at 10W into 8Ω, V

• 81% at 15W into 4Ω, V

● ALC Provides Battery Brownout Protection

● Extensive Click-and-Pop Suppression

The MAX98372’s flexible digital audio interface (DAI)

supports I 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.

= 17V

= 12V

PVDD

= 12V

PVDD

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.

● 30-Bump, 0.4mm WLP and 32-Pin TQFN Packages

Simpliﬁed Block Diagram

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.

DVDD

PVDD

MAX98372

THERMAL

FOLDBACK

I²C

All MAX98372 control is performed using a standard

2-wire, I C interface. One of sixteen slave addresses can

DHT

ALC

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.

DAC

CLASS D

Applications

● Tablets

● Notebook Computers

● Soundbars

Ordering Information appears at end of data sheet.

19-7734; Rev 4; 3/20

12 3 4 5 6 7...100

中文翻译

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与MAX98372相关器件

型号	品牌	获取价格	描述	数据表
MAX98372_V01	MAXIM	获取价格	Digital Input Class D Amplifier with DHT and Brownout Protection
MAX98372ETJ+	MAXIM	获取价格	Digital Input Class D Amplifier with DHT and Brownout Protection
MAX98372ETJ+T	MAXIM	获取价格	Digital Input Class D Amplifier with DHT and Brownout Protection
MAX98372EWV+	MAXIM	获取价格	Digital Input Class D Amplifier with DHT and Brownout Protection
MAX98372EWV+T	MAXIM	获取价格	Digital Input Class D Amplifier with DHT and Brownout Protection
MAX98374	ADI	获取价格	带DHT的数字输入D类放大器
MAX98374EFF+	MAXIM	获取价格	Audio Amplifier,
MAX98380	ADI	获取价格	小型升压数字输入D类放大器
MAX98389	ADI	获取价格	具有 IV 反馈和掉电保护功能的数字输入 D 类放大器
MAX98390	ADI	获取价格	增强型D类放大器，集成动态扬声器管理

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