Datasheet > MAX98374

MAX98374

更新时间： 2024-11-30 14:57:39

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
129页	3805K
描述
带DHT的数字输入D类放大器

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中文翻译

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MAX98374 数据手册

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MAX98374

Digital Input Class D Speaker Ampliﬁer with DHT

General Description

Beneﬁts and Features

● Wide Input Supply Range (5.5V to 16V)

The MAX98374 is a high-efficiency, mono Class D

speaker amplifier featuring dynamic headroom tracking

(DHT) and brownout protection. As the power-supply volt-

age varies due to sudden transients and declining battery

life, DHT automatically optimizes the headroom available

to the Class D amplifier to maintain a consistent listening

experience. A wide 5.5V to 16V supply range allows the

device to exceed 16W into an 8Ω load.

● Dynamic Headroom Tracking (DHT) Maintains a

Consistent Listening Experience

● Integrated Thermal Protection and Output Foldback

● Remote Output Sensing Allows up to 20dB THD+N

Improvement with Ferrite Bead Filters

● Class D EMI Reduction Enables Filterless Operation

• Active Emissions Limiting (AEL)

The flexible digital interface supports either the MIPI

• Spread-Spectrum Modulation (SSM)

• Switching Edge Rate Control

SoundWire compatible interface for audio and control

data, or the PCM interface for audio data and a standard

I C interface for control data. The PCM interface supports

● 110dB A-Weighted Dynamic Range

● 0.006% THD+N at 3W into 8Ω, f = 1kHz

● 0.025% THD+N at 3W into 8Ω, f = 6kHz

● Output Power at 1% THD+N:

I S, left-justified, and TDM audio data formats at 16-, 32-,

44.1-, 48-, 88.2-, and 96kHz sample rates with 16-, 24-,

and 32-bit data. In TDM mode, the device can support up

to 16 channels of audio data. A unique clocking structure

eliminates the need for an external master clock for PCM

communication, which reduces pin count and simplifies

board layout.

• 13.5W into 8Ω, V

• 12.5W into 4Ω, V

= 16V

= 12V

PVDD

● Output Power at 10% THD+N:

Active emissions limiting (AEL), spread spectrum modula-

tion (SSM), and edge rate control minimize EMI and elimi-

nate the need for the output filtering found in traditional

Class D devices.

• 16.9W into 8Ω, V

• 15.3W into 4Ω, V

= 16V

= 12V

PVDD

● Speaker Amplifier Efficiency:

• 90.5% at 10W into 8Ω, V

• 81% at 15.3W into 4Ω, V

= 12V

PVDD

Thermal foldback protection ensures robust behavior

when the thermal limits of the device are reached. When

enabled, it automatically reduces the output power when

the temperature exceeds a user specified threshold. This

allows for uninterrupted music playback even at high

ambient temperatures. Traditional thermal protection is

also available in addition to robust overcurrent protection.

● BDE Provides Supply Brownout Protection

● Extensive Click-and-Pop Suppression

● Space Saving Packages

• 25-Bump WLP (2.17mm x 2.25mm x 0.64mm,

0.4mm Pitch)

A flexible brownout-detection engine (BDE) can be

programmed to initiate various gain reductions, signal

limiting, and clip functions based on supply voltage sta-

tus. Threshold, hysteresis, and attack/release rates are

programmable.

• 22-Pin FCQFN (3mm x 3mm x 0.55mm,

0.4mm Pitch)

Applications

● Tablets

● Notebook Computers

● Sound Bars

The device is available in a 0.4mm pitch, 25-bump wafer-

level package (WLP), or in a 0.4mm pitch, 22-pin FCQFN

package. The device operates over the extended -40°C to

+85°C temperature range.

Ordering Information appears at end of data sheet.

MIPI SoundWire is a registered trademark of MIPI Alliance, Inc.

19-100262; Rev 1; 1/21

12 3 4 5 6 7...129

中文翻译

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与MAX98374相关器件

型号	品牌	获取价格	描述	数据表
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
MAX98390C	MAXIM	获取价格	MAX98390C or MAX98390D development board
MAX98390D	MAXIM	获取价格	MAX98390C or MAX98390D development board
MAX98390EVSYS	MAXIM	获取价格	MAX98390C or MAX98390D development board
MAX98395	ADI	获取价格	11.7W、数字输入、DG类放大器，具有I/V检测和超低静态功耗
MAX98396	ADI	获取价格	20V、数字输入、DG类放大器，具有I/V检测和防掉电功能
MAX98397	ADI	获取价格	28V Digital Input, Class-DG Amplifier with IVSENSE, Ultra-Low IQ, and Brownout Prevention

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