MAX9718A

更新时间： 2024-11-26 22:55:07

品牌	Logo	应用领域
美信 - MAXIM		放大器功率放大器
页数	文件大小	规格书
23页	569K
描述
Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers

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MAX9718A 数据手册

19-3050; Rev 0; 10/03

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

General Description

Features

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.

ꢀ 2.7V to 5.5V Single-Supply Operation

ꢀ Very High -93dB PSRR at 217Hz

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

ꢀ Differential Input

ꢀ Internal Fixed Gain to Reduce Component Count

ꢀ Adjustable Gain Option (MAX9718A/MAX9719A)

ꢀ 100nA Low-Power Shutdown Mode

ꢀ No Audible Clicks or Pops at Power-Up/Down

ꢀ Improved Performance Pin-Compatible Upgrade

to LM4895 (MAX9718D)

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.

Ordering Information

TEMP

RANGE

PIN-

PACKAGE

GAIN

(dB)

PART

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

Adj

MAX9718AETB*

MAX9718AEUB

-40°C to +85°C 10 TDFN-EP**

-40°C to +85°C 10 µMAX-EP**

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.

*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.

Applications

Mobile Phones

PDAs

UCSP is a trademark of Maxim Integrated Products, Inc.

Portable Devices

Simplified Block Diagram

SINGLE SUPPLY

2.7V TO 5.5V

SINGLE SUPPLY

2.7V TO 5.5V

OUTL+

INL+

OUT+

IN+

INL-

OUTL-

OUTR+

INR+

IN-

OUT-

SHDN

INR-

OUTR-

SHDM

MAX9718

SHDN

MAX9719

________________________________________________________________ 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...23

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与MAX9718A相关器件

型号	品牌	获取价格	描述	数据表
MAX9718AEBL	MAXIM	获取价格	Audio Amplifier, 1 Func, BICMOS, PBGA9
MAX9718AEBL+	MAXIM	获取价格	Audio Amplifier, 1 Func, BICMOS, PBGA9,
MAX9718AEBL+T	MAXIM	获取价格	暂无描述
MAX9718AEBL+TG45	MAXIM	获取价格	Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers
MAX9718AEBL-T	MAXIM	获取价格	Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers
MAX9718AETB	MAXIM	获取价格	Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers
MAX9718AETB+	MAXIM	获取价格	Audio Amplifier, 1.4W, 1 Channel(s), 1 Func, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, MO-229, TDF
MAX9718AETB+T	MAXIM	获取价格	Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers
MAX9718AETB-T	MAXIM	获取价格	Audio Amplifier, 1.4W, 1 Channel(s), 1 Func, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEED-
MAX9718AEUB	MAXIM	获取价格	Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers

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