Datasheet > MAX98380

MAX98380

更新时间： 2024-11-30 14:58:27

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
81页	2115K
描述
小型升压数字输入D类放大器

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中文翻译

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MAX98380 数据手册

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MAX98380

Small, Boosted, Digital Input Class-D Amplifier

General Description

Benefits and Features

The MAX98380 is a small, mono Class-D audio amplifier

featuring an integrated capacitive boost converter. The

device implements a tripler charge pump-based boost

converter that efficiently delivers up to 4.85W at 1%

THD+N into an 8Ω load. The capacitive boost replaces

the large and expensive inductor required for an inductive

boost with smaller, lower-profile capacitors that reduce the

total PCB solution.

● Integrated Capacitive Boost Converter—No Bulky

Inductors

● 3.6W Output Power into 6Ω at V

● 10mW Total Quiescent Power

● 3ms Turn-On Time

= 3.7V

BAT

● 80% Efficiency (1.0W into R = 8Ω, V

= 3.7V)

BAT

● 19.8μV

● 16.5μV

Speaker Mode Output Noise

Receiver Mode Output Noise

RMS

● Low 0.005% THD+N at 1kHz

● No MCLK Required

● Sample Rates of 8kHz to 192kHz

● Supports Left, Right, or (Left/2 + Right/2) Output in I S

and Left-Justified Modes

Additionally, as the power-supply voltage varies due to de-

clining battery life, an on-chip limiter (DHT) automatically

optimizes the headroom available to the Class-D amplifier

to maintain consistent distortion and listening levels.

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 am-

bient temperatures. Traditional thermal protection is also

available in addition to robust overcurrent protection.

● Sophisticated Edge Rate Control Enables Filterless

Class-D Outputs

● Low RF Susceptibility Rejects TDMA Noise from GSM

Radios

● Class-D Switching Frequency Trimmed to 10% for

Better EMI Planning

● Extensive Click-and-Pop Reduction Circuitry

● Dynamic Headroom Tracking (DHT)

● Robust Short-Circuit and Thermal Protection

● Available in Space-Saving Package: 1.468mm x

2.138mm, 24-Bump WLP (0.35mm Pitch)

The device provides a PCM interface for audio data and

a standard I C interface for control data communication.

The PCM interface supports audio playback using I S,

left-justified, and TDM audio data formats. A unique clock-

ing structure eliminates the need for an external master

clock for PCM communication. This reduces EMI and pos-

sible board coupling issues in addition to reducing the size

and pin count.

Active emissions-limiting and edge-rate limiting circuitry

greatly reduce EMI. A filterless spread-spectrum modula-

tion scheme eliminates the need for output filtering found

in traditional Class-D devices and reduces the component

count of the solution.

The IC is available in a 0.35mm pitch 24-bump wafer-level

package (WLP). It is specified over the extended, -40°C to

+85°C temperature range.

Applications

● Smartphones

● Smart Speakers

● IoT Devices

● Tablets

SMBus is a trademark of Intel Corp.

19-101484; Rev 0; 5/22

Ordering Information appears at end of data sheet.

12 3 4 5 6 7...81

中文翻译

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与MAX98380相关器件

型号	品牌	获取价格	描述	数据表
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
MAX983CPA	MAXIM	获取价格	Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators
MAX983CPA+	MAXIM	获取价格	Comparator, 2 Func, 10000uV Offset-Max, 300000ns Response Time, PDIP8, 0.300 INCH, PLASTIC

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