Datasheet > MAX9768B

MAX9768B

更新时间： 2024-11-19 04:41:31

品牌	Logo	应用领域
美信 - MAXIM		放大器
页数	文件大小	规格书
25页	333K
描述
10W Mono Class D Speaker Amplifier with Volume Control

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MAX9768B 数据手册

19-0854; Rev 0; 9/07

10W Mono Class D Speaker

Amplifier with Volume Control

MAX9768

General Description

The MAX9768 mono 10W Class D speaker amplifier

provides high-quality, efficient audio power with an inte-

grated volume control function.

Features

♦ 10W Output (8Ω, PV

= 14V, THD+N = 10%)

♦ Patented Spread-Spectrum Modulation

♦ Meets EN55022B EMC with Ferrite Bead Filters

♦ Amplifier Operation from 4.5V to 14V Supply

The MAX9768 features a 64-step dual-mode (analog or

digitally programmable) volume control and mute func-

tion. The audio amplifier operates from a 4.5V to 14V

single supply and can deliver up to 10W into an 8Ω

speaker with a 14V supply.

♦ 64-Step Integrated Volume Control (I C or Analog)

♦ Low 0.08% THD+N (R = 8Ω, P

= 6W)

OUT

♦ High 77dB PSRR

A selectable spread-spectrum mode reduces EMI-radiat-

ed emissions, allowing the device to pass EMC testing

with ferrite bead filters and cable lengths up to 1m. The

MAX9768 can be synchronized to an external clock,

allowing synchronization of multiple Class D amplifiers.

♦ Two t

Times Offered

MAX9768—220ms

MAX9768B—15ms

♦ Low-Power Shutdown Mode (0.5µA)

The MAX9768 features high 77dB PSRR, low 0.08%

THD+N, and SNR up to 97dB. Robust short-circuit and

thermal-overload protection prevent device damage

during a fault condition. The MAX9768 is available in a

24-pin thin QFN-EP (4mm x 4mm x 0.8mm) package

and is specified over the extended -40°C to +85°C tem-

perature range.

♦ Short-Circuit and Thermal-Overload Protection

Ordering Information

PKG

CODE

PART

PIN-PACKAGE

(ms)

MAX9768ETG+

MAX9768BETG+

24 TQFN-EP*

220

T2444+4

Applications

Note: All devices are specified over the -40°C to +85°C oper-

ating temperature range.

+Denotes lead-free package.

Notebook Computers

Flat-Panel Displays

Multimedia Monitors

GPS Navigation

Systems

Security/Personal

Mobile Radio

*EP = Exposed pad.

Pin Configuration located at end of data sheet.

Simplified Block Diagram

3.3V

4.5V TO 14V

MAX9768 EMI WITH FERRITE BEAD FILTERS

(V = 12V, 1m CABLE, 8Ω LOAD)

SPEAKER

AUDIO

INPUT

FILTERLESS

CLASS D

SPEAKER

OUTPUT

OVER 20dB MARGIN

TO EN55022B LIMIT

SHDN

MUTE

ANALOG OR

I C VOLUME

CONTROL

MAX9768

100 200 300 400 500 600 700 800 900 1000

FREQUENCY (MHz)

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...25

中文翻译

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与MAX9768B相关器件

型号	品牌	获取价格	描述	数据表
MAX9768BETG	MAXIM	获取价格	10W Mono Class D Speaker Amplifier with Volume Control
MAX9768BETG/V+	MAXIM	获取价格	10W Mono Class D Speaker Amplifier with Volume Control
MAX9768BETG/V+T	MAXIM	获取价格	Volume Control Circuit,
MAX9768BETG+	MAXIM	获取价格	10W Mono Class D Speaker Amplifier with Volume Control
MAX9768ETG	MAXIM	获取价格	10W Mono Class D Speaker Amplifier with Volume Control
MAX9768ETG+	MAXIM	获取价格	10W Mono Class D Speaker Amplifier with Volume Control
MAX9768EVCMAXQU	MAXIM	获取价格	Fully Tested PCB
MAX9768EVCMAXQU+	MAXIM	获取价格	Fully Tested PCB
MAX9768EVKIT+	MAXIM	获取价格	Fully Tested PCB
MAX976ESA	MAXIM	获取价格	Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators

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