MAX9742ETX+

更新时间： 2024-10-28 13:11:11

品牌	Logo	应用领域
美信 - MAXIM		放大器
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36页	766K
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MAX9742ETX+ 数据手册

19-0731; Rev 0; 1/07

Single-/Dual-Supply, Stereo 16W,

Class D Amplifier with Differential Inputs

MAX9742

General Description

Features

ꢀ 2 x 16W Output Power (R = 4Ω, THD+N = 10%)

The MAX9742 stereo Class D audio power amplifier

delivers up to 2 x 16W into 4Ω loads. The MAX9742

features high-power efficiency (92% with 8Ω loads),

eliminating the need for a bulky heatsink and conserv-

ing power. The MAX9742 operates from a 20V to 40V

single supply or a 10V to 20V dual supply. ꢀeatures

include fully differential inputs, comprehensive click-

and-pop suppression, low-power shutdown mode, and

an externally adjustable gain. Short-circuit and thermal-

overload protection prevent the device from being

damaged during a fault condition.

ꢀ High Efficiency: Up to 92% with R = 8Ω

ꢀ Mute and Shutdown Modes

ꢀ Differential Inputs Suppress Common-Mode Noise

ꢀ Adjustable Gain

ꢀ Integrated Click-and-Pop Suppression

ꢀ Low 0.06% THD+N at 3.5W, R = 8Ω

ꢀ Output Short-Circuit and Thermal Protection

ꢀ Available in Space-Saving, 6mm x 6mm, 36-Pin

TQFN Package

The MAX9742 is available in a thermally efficient 36-pin

TQꢀN (6mm x 6mm x 0.8mm) package and is specified

over the -40°C to +85°C extended temperature range.

Ordering Information

PKG

CODE

PART

TEMP RANGE PIN-PACKAGE

Applications

MAX9742ETX+ -40°C to +85°C 36 TQꢀN-EP*

+Denotes lead-free package.

T3666-3

CRT TVs

ꢀlat-Panel Display TVs

Audio Docking Stations

Multimedia Monitors

*EP = Exposed paddle.

Pin Configuration located at end of data sheet.

Simplified Block Diagrams

SINGLE-SUPPLY CONFIGURATION

FBL

20V TO 40V

FBL

IN1

INL-

INL+

LEFT NEGATIVE

AUDIO INPUT

MAX9742

OUT

IN2

CLASS D

MODULATOR AND

HALF-BRIDGE

OUTL

LEFT POSITIVE

AUDIO INPUT

ZBL

FBL

MID

ZBL

FBR

OUT

CLASS D

MODULATOR AND

HALF-BRIDGE

OUTR

IN2

INR+

INR-

RIGHT POSITIVE

AUDIO INPUT

ZBL

IN1

RIGHT NEGATIVE

AUDIO INPUT

CONTROL LOGIC/

POWER-UP

ZBL

SEQUENCING

FBR

SFT

SHDN

FBR

SFT

OFF

Simplified Block Diagrams continued 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.

12 3 4 5 6 7...36

中文翻译

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MAX9742ETX+ 替代型号

型号	品牌	替代类型	描述	数据表
MAX9742ETX+T	MAXIM	完全替代	Audio Amplifier, 21W, 2 Channel(s), 1 Func, Bipolar, 6 X 6 MM, 0.80 MM HEIGHT, LEAD FREE,

与MAX9742ETX+相关器件

型号	品牌	获取价格	描述	数据表
MAX9742ETX+T	MAXIM	获取价格	Audio Amplifier, 21W, 2 Channel(s), 1 Func, Bipolar, 6 X 6 MM, 0.80 MM HEIGHT, LEAD FREE,
MAX9744	MAXIM	获取价格	20W Stereo Class D Speaker Amplifier with Volume Control
MAX9744	ADI	获取价格	20W、立体声、D类扬声器放大器，带有音量控制
MAX9744_V01	MAXIM	获取价格	20W Stereo Class D Speaker Amplifier with Volume Control
MAX9744ETH	MAXIM	获取价格	20W Stereo Class D Speaker Amplifier with Volume Control
MAX9744ETH+	MAXIM	获取价格	Volume Control Circuit, 2 Channel(s), BICMOS, 7 X 7 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO
MAX9744ETH+T	MAXIM	获取价格	Volume Control Circuit,
MAX9746	MAXIM	获取价格	1.2W, Low-EMI, Filterless, Class D Audio Amplifier
MAX9746BEBC	MAXIM	获取价格	1.2W, Low-EMI, Filterless, Class D Audio Amplifier
MAX974C/D	MAXIM	获取价格	Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators

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