MAX9719 Maxim Integrated Products, MAX9719 Datasheet

MAX9719

Manufacturer Part Number

MAX9719

Description

(MAX9718 / MAX9719) 1.4W Differential Audio Power Amplifiers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX9719.pdf (23 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX9719AEUE

Manufacturer:

MAXIM/美信

Quantity:

20 000

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The MAX9718/MAX9719 differential input audio power

amplifiers are ideal for portable audio devices with

internal speakers. The differential input structure

improves noise rejection and provides common-mode

rejection. A bridge-tied load (BTL) architecture mini-

mizes external component count, while providing high-

quality, power audio amplification. The MAX9718 is a

single-channel amplifier while the MAX9719 is a dual-

channel amplifier for stereo systems. Both devices

deliver 1.4W continuous average power per channel to

a 4Ω load with less than 1% THD+N while operating

from a single +5V supply. The devices are available as

adjustable gain amplifiers or with internally fixed gains

of 0dB, 3dB, and 6dB to reduce component count.

A shutdown input disables the bias generator and

amplifiers and reduces quiescent current consumption

to less than 100nA. The MAX9718 shutdown input can

be set as active high or active low. These devices fea-

ture Maxim’s comprehensive click-and-pop suppres-

sion circuitry that reduces audible clicks and pops

during startup and shutdown.

The MAX9718 is pin compatible with the LM4895,

and is available in 9-bump UCSP™, 10-pin TDFN, and

10-pin µMAX packages. The MAX9719 is available in

16-pin TQFN, 16-pin TSSOP, and 16-bump UCSP pack-

ages. Both devices operate over the -40°C to +85°C

extended temperature range.

19-3050; 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.

Mobile Phones

PDAs

Portable Devices

1.4W Differential Audio Power Amplifiers

________________________________________________________________ Maxim Integrated Products

SHDM

SHDN

IN+

IN-

General Description

SINGLE SUPPLY

2.7V TO 5.5V

MAX9718

Applications

OUT+

OUT-

Low-Cost, Mono/Stereo,

o 2.7V to 5.5V Single-Supply Operation

o Very High -93dB PSRR at 217Hz

o 1.4W into 4Ω at 1% THD+N (per Channel)

o Differential Input

o Internal Fixed Gain to Reduce Component Count

o Adjustable Gain Option (MAX9718A/MAX9719A)

o 100nA Low-Power Shutdown Mode

o No Audible Clicks or Pops at Power-Up/Down

o Improved Performance Pin-Compatible Upgrade

*Future product—contact factory for availability.

**EP = Exposed paddle.

Ordering Information continued at end of data sheet.

Pin Configurations appear at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

MAX9718AEBL-T* -40°C to +85°C 3 x 3 UCSP

MAX9718AETB*

MAX9718AEUB

to LM4895 (MAX9718D)

SHDN

INL+

INR+

INR-

INL-

PART

Simplified Block Diagram

SINGLE SUPPLY

2.7V TO 5.5V

-40°C to +85°C 10 TDFN-EP**

-40°C to +85°C 10 µMAX-EP**

MAX9719

RANGE

TEMP

Ordering Information

OUTL+

OUTL-

OUTR+

OUTR-

PIN-

PACKAGE

Features

GAIN

(dB)

Adj

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