MAX9715 Maxim Integrated Products, MAX9715 Datasheet

MAX9715

Manufacturer Part Number

MAX9715

Description

Filterless Class D Audio Amplifier

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX9715.pdf (14 pages)

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The MAX9715 high-efficiency, stereo, Class D audio

power amplifier provides up to 2.8W per channel into a

4Ω speaker with a 5V supply. Maxim’s second-generation

Class D technology features robust output protection,

high efficiency, and high power-supply rejection (PSRR)

while eliminating the need for output filters. Selectable

gain settings, +10.5dB or +9.0dB, adjust the amplifier

gain to suit the audio input level and speaker load.

The MAX9715 features high PSRR (71dB at 1kHz),

allowing for operation from noisy supplies without addi-

tional regulation. Comprehensive click-and-pop sup-

pression eliminates audible clicks and pops at startup

and shutdown. The MAX9715 operates from a single 5V

supply and consumes only 12mA of supply current.

Integrated shutdown control reduces supply current to

less than 100nA.

The MAX9715 is fully specified over the extended

-40°C to +85°C temperature range and is available in

thermally enhanced 16-pin thin QFN-EP and 16-pin

TSSOP packages.

19-3589; Rev 1; 8/05

Typical Operating Circuit/Functional Diagram appears at

end of data sheet.

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.

High-End Notebook Audio

LCD Projectors

Portable Audio

Multimedia Docking Stations

INR

GAIN

INL

________________________________________________________________ Maxim Integrated Products

4.5V TO 5.5V SUPPLY

MAX9715

General Description

AMPLIFIER

CLASS D

Block Diagram

Applications

OUTR+

OUTL+

OUTR-

OUTL-

2.8W, Low-EMI, Stereo, Filterless

Class D Audio Amplifier

♦ 5V Single-Supply Operation

♦ Patented Spread-Spectrum Modulator Reduces EMI

♦ 2.8W, Class D, Stereo Speaker Amplifier (4Ω)

♦ Filterless Class D Requires No LC Output Filter

♦ High PSRR (71dB at 1kHz)

♦ 86% Efficiency (R

♦ Low-Power Shutdown Mode

♦ Integrated Click-and-Pop Suppression

♦ Low Total Harmonic Distortion: 0.06% at 1kHz

♦ Short-Circuit and Thermal Protection

♦ Internal Gain, +9.0dB or +10.5dB

♦ Available in Space-Saving Packages

+Denotes lead-free package.

*EP = Exposed paddle.

Pin Configurations continued at end of data sheet.

MAX9715ETE+

MAX9715EUE+

16-Pin Thin QFN-EP (5mm x 5mm x 0.8mm)

16-Pin TSSOP

TOP VIEW

PART

BIAS

INR

INL

Ordering Information

-40°C to +85°C

TEMP RANGE

= 8Ω, P

Pin Configurations

MAX9715

TQFN

OUT

= 1W)

PIN-PACKAGE

16 TQFN-EP*

16 TSSOP

Features

SHDN

GND

GAIN

N.C.

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