Rainbow-electronics MAX9714 Manuel d'utilisateur télécharger pdf

General Description

The MAX9713/MAX9714 mono/stereo class D audio

power amplifiers provide class AB amplifier performance

with class D efficiency, conserving board space and

eliminating the need for a bulky heatsink. Using a class

D architecture, these devices deliver up to 6W while

offering greater than 85% efficiency. Proprietary and

patent-protected modulation and switching schemes

render the traditional class D output filter unnecessary.

The MAX9713/MAX9714 offer 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

differential architecture, a full bridged output, and com-

prehensive click-and-pop suppression.

The MAX9713/MAX9714 feature high 76dB PSRR, low

0.07% THD+N, and SNR in excess of 100dB. Short-cir-

cuit and thermal-overload protection prevent the

devices from being damaged during a fault condition.

The MAX9713 is available in a 32-pin TQFN (5mm x

5mm x 0.8mm) package. The MAX9714 is available in a

32-pin TQFN (7mm x 7mm x 0.8mm) package. Both

devices are specified over the extended -40°C to

+85°C temperature range.

Applications

Features

♦ Filterless Class D Amplifier

♦ Unique Spread-Spectrum Mode Offers 5dB

Emissions Improvement Over Conventional

Methods

♦ Up to 85% Efficient

♦ 6W Output Power into 8Ω

♦ Low 0.07% THD+N

♦ High PSRR (76dB at 1kHz)

♦ 10V to 25V Single-Supply Operation

♦ Differential Inputs Minimize Common-Mode Noise

♦ Pin-Selectable Gain Reduces Component Count

♦ Industry-Leading Integrated Click-and-Pop

Suppression

♦ Low Quiescent Current (18mA)

♦ Low-Power Shutdown Mode (0.2µA)

♦ Short-Circuit and Thermal-Overload Protection

♦ Available in Thermally Efficient, Space-Saving

Packages:

32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9713

32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9714

MAX9713/MAX9714

6W, Filterless, Spread-Spectrum

Mono/Stereo Class D Amplifiers

________________________________________________________________ Maxim Integrated Products 1

19-3039; Rev 0; 10/03

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.

Ordering Information

PART TEMP RANGE

PIN-PACKAGE

AMP

MAX9713ETJ -40

C to +85

32 TQFN-EP*

Mono

MAX9714ETJ -40

C to +85

32 TQFN-EP*

Stereo

*EP = Exposed paddle.

LCD Monitors

LCD TVs

Desktop PCs

LCD Projectors

High-End Notebook

Audio

Hands-Free Car

Phone Adaptors

MAX9714

0.47µF

INL+ OUTL+

OUTL-INL-

0.47µF

H-BRIDGE

0.47µF

INR+ OUTR+

OUTR-INR-

0.47µF

H-BRIDGE

Pin Configurations appear at end of data sheet.

MAX9713

0.47µF

IN+ OUT+

OUT-

IN-

0.47µF

H-BRIDGE

Block Diagrams

1 2 3 4 5 6 ... 17 18

Résumé du contenu

Page 1 - MAX9713/MAX9714

General DescriptionThe MAX9713/MAX9714 mono/stereo class D audiopower amplifiers provide class AB amplifier performancewith class D efficiency, conser

Page 2

MAX9713/MAX9714In the class D case, an 8mV offset into 8Ω equates to an additional power drain of 8µW. Due to the high efficiency of the class D ampli

Page 3

Sharing Input SourcesIn certain systems, a single audio source can be sharedby multiple devices (speaker and headphone ampli-fiers). When sharing inpu

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MAX9713/MAX97146W, Filterless, Spread-SpectrumMono/Stereo Class D Amplifiers12 _______________________________________________________________________

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