MAX9714 Просмотр технического описания (PDF) - Maxim Integrated

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MAX9714

6W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers

Maxim Integrated 

19-3039; Rev 6; 12/06

EVAALVUAAILTAIOBNLEKIT

6W, Filterless, Spread-Spectrum

Mono/Stereo Class D Amplifiers

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 pro-

tected modulation and switching schemes render the tra-

ditional 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 95dB. 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

LCD Monitors

LCD TVs

Desktop PCs

LCD Projectors

High-End Notebook

Audio

Hands-Free Car

Phone Adaptors

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

Ordering Information

PART

MAX9713ETJ+

MAX9714ETJ+

TEMP RANGE

-40oC to +85oC

-40oC to +85oC

*EP = Exposed paddle.

+Denotes lead-free package.

PIN-PACKAGE

32 TQFN-EP*

32 TQFN-EP*

AMP

Mono

Stereo

Block Diagrams

0.47μF

IN+

MAX9713

OUT+

0.47μF

H-BRIDGE

IN-

OUT-

0.47μF

INL+

0.47μF

INL-

MAX9714

H-BRIDGE

OUTL+

OUTL-

0.47μF

INR+

0.47μF

INR-

H-BRIDGE

OUTR+

OUTR-

Pin Configurations appear at end of data sheet.

________________________________________________________________ Maxim Integrated Products 1

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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