Datasheet > MAX9741

MAX9741

更新时间： 2024-11-18 22:25:35

品牌	Logo	应用领域
美信 - MAXIM		放大器
页数	文件大小	规格书
1页	44K
描述
12W+12W, Filterless, Spread-Spectrum, Stereo, Class D Amplifier

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MAX9741 数据手册

XX-XXXX; Rev 0; 10/05

12W+12W, Filterless, Spread-Spectrum,

Stereo, Class D Amplifier

General Description

Features

The MAX9741 stereo Class D audio power amplifier

provides Class AB amplifier performance with Class D

efficiency, conserving board space and eliminating the

need for a bulky heatsink. Using a Class D architecture,

it delivers 12W continuous output power into 8Ω loads.

Proprietary and patent-protected modulation and switch-

ing schemes render the traditional Class D EMI suppres-

sion output filter unnecessary.

♦ Filterless Class D Amplifier

♦ Unique Spread-Spectrum Mode Offers 5dB

Emissions Improvement Over Conventional

Methods

♦ Up to 88% Efficient into 16Ω

♦ 12W+12W Continuous Output Power into 8Ω

♦ 15W+15W Continous Output Power into 16Ω

♦ Low 0.07% THD+N

The MAX9741 offers two modulation schemes: a fixed-

frequency mode (FFM), and a spread-spectrum mode

(SSM) that reduces EMI-radiated emissions due to the

modulation frequency. The device utilizes a fully differ-

ential architecture, a full bridged output, and offers

comprehensive click-and-pop suppression.

♦ High PSRR (80dB at 1kHz)

♦ 10V to 25V Single-Supply Operation

♦ Differential Inputs Minimize Common-Mode Noise

♦ Pin-Selectable Gain Reduces Component Count

♦ Industry-Leading Click-and-Pop Suppression

♦ Low Quiescent Current (24mA)

The MAX9741 features high 80dB PSRR, low 0.07%

THD+N, and SNR in excess of 100dB. Short-circuit and

thermal-overload protection prevent the device from

being damaged during a fault condition. The MAX9741

is available in a 56-pin TQFN (8mm x 8mm x 0.8mm)

package. The MAX9741 is specified over the extended

-40°C to +85°C temperature range.

♦ Low-Power Shutdown Mode (0.2µA)

♦ Short-Circuit and Thermal-Overload Protection

Applications

♦ Available in Thermally Efficient, Space-Saving

56-Pin TQFN (8mm x 8mm x 0.8mm) Package

LCD TVs

Hands-Free Car

Phone Adaptors

LCD Monitors

Desktop PCs

LCD Projectors

Ordering Information

Automotive

PKG

CODE

PART

TEMP RANGE PIN-PACKAGE

56 TQFN-EP*

MAX9741ETN+ -40°C to +85°C

T5688-3

+Denotes lead-free package.

*EP = Exposed paddle.

Simplified Block Diagram

INR+

INR-

INL+

INL-

DIFFERENTIAL AUDIO

INPUTS ELIMINATE

NOISE PICKUP

OUTR+

FILTERLESS

CLASS D

GAIN

CONTROL

OUTR-

OUTL+

OUTPUT

PROTECTION

AMPLIFIERS

CLASS D

MODULATOR

DRIVE 2 X 13W

INTO 8Ω LOADS

OUTL-

PROGRAMMABLE

SWITCHING

FS1, FS2

MAX9741

FREQUENCY

Pin Configurations appear at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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与MAX9741相关器件

型号	品牌	获取价格	描述	数据表
MAX9741_V01	MAXIM	获取价格	12W12W, Low-EMI, Spread-Spectrum, Stereo, Class D Amplifier
MAX9741ETN	MAXIM	获取价格	12W+12W, Filterless, Spread-Spectrum, Stereo, Class D Amplifier
MAX9741ETN+	MAXIM	获取价格	12W12W, Low-EMI, Spread-Spectrum, Stereo, Class D Amplifier
MAX9741ETN+D	MAXIM	获取价格	Audio Amplifier, 12W, 2 Channel(s), 1 Func, BICMOS, TQFN-56
MAX9741ETN+T	MAXIM	获取价格	Audio Amplifier, 12W, 2 Channel(s), 1 Func, BICMOS, 8 X 8 MM, 0.80 MM HEIGHT, ROHS COMPLIA
MAX9741ETN+TD	MAXIM	获取价格	Audio Amplifier, 12W, 2 Channel(s), 1 Func, BICMOS, TQFN-56
MAX9742	MAXIM	获取价格	Single-/Dual-Supply, Stereo 16W, Class D Amplifier with Differential Inputs
MAX9742	ADI	获取价格	单/双电源供电、立体声、16W、D类放大器，差分输入
MAX9742ETX	MAXIM	获取价格	Single-/Dual-Supply, Stereo 16W, Class D Amplifier with Differential Inputs
MAX9742ETX+	MAXIM	获取价格	暂无描述

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