MAX9708ETN

更新时间： 2024-11-26 21:55:11

品牌	Logo	应用领域
美信 - MAXIM		放大器
页数	文件大小	规格书
24页	779K
描述
20W/40W, Filterless, Spread-Spectrum, Mono/Stereo, Class D Amplifier

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MAX9708ETN 数据手册

19-3678; Rev 0; 7/05

20W/40W, Filterless, Spread-Spectrum,

Mono/Stereo, Class D Amplifier

General Description

Features

The MAX9708 mono/stereo, Class D audio power ampli-

fier delivers up to 2 x 21W into an 8Ω stereo mode and

1 x 42W into a 4Ω load in mono mode while offering up

to 87% efficiency. The MAX9708 provides Class AB

amplifier performance with the benefits of Class D effi-

ciency, eliminating the need for a bulky heatsink and

conserving power. The MAX9708 operates from a single

+10V to +18V supply, driving the load in a BTL configu-

ration.

♦ 2 x 21W Output Power in Stereo Mode

(8Ω, THD = 10%)

♦ 1 x 42W Output Power in Mono Mode

(4Ω, THD = 10%)

♦ High Efficiency: Up to 87%

♦ Filterless Class D Amplifier

♦ Unique Patented Spread-Spectrum Mode

♦ Programmable Gain (+22dB, +25dB, +29.5dB,

+36dB)

The MAX9708 offers two modulation schemes: a fixed-

frequency modulation (FFM) mode, and a spread-spec-

trum modulation (SSM) mode that reduces

EMI-radiated emissions. The MAX9708 can be synchro-

nized to an external clock from 600kHz to 1.2MHz. A

synchronized output allows multiple units to be cascad-

ed in the system.

♦ High PSRR (90dB at 1kHz)

♦ Differential Inputs Suppress Common-Mode

Noise

♦ Shutdown and Mute Control

♦ Integrated Click-and-Pop Suppression

♦ Low 0.1% THD+N

♦ Current Limit and Thermal Protection

♦ Programmable Thermal Flag

♦ SYNC Input/Output

Features include fully differential inputs, comprehensive

click-and-pop suppression, and four selectable-gain set-

tings (22dB, 25dB, 29.5dB, and 36dB). A pin-program-

mable thermal flag provides seven different thermal

warning thresholds. Short-circuit and thermal-overload

protection prevent the device from being damaged

during a fault condition.

♦ Available in Thermally Efficient, Space-Saving

Packages: 56-Pin TQFN and 64-Pin TQFP

The MAX9708 is available in 56-pin TQFN (8mm x 8mm

x 0.8mm) and 64-pin TQFP (10mm x 10mm x 1.4mm)

packages, and is specified over the extended

-40°C to +85°C temperature range.

Ordering Information

PKG

PART

TEMP RANGE PIN-PACKAGE

CODE

MAX9708ETN

-40°C to +85°C 56 TQFN-EP**

T5688-3

C64E-6

Applications

PDP TVs

MAX9708ECB* -40°C to +85°C 64 TQFP-EP**

LCD TVs

*Future product—Contact factory for availability.

**EP = Exposed paddle.

Automotive

PC/HiFi Audio Solutions

Pin Configurations appear at end of data sheet.

Simplified Block Diagram

MAX9708

SYNCOUT

MAX9708

FS1, FS2

SYNC

FS1, FS2

SYNC

RIGHT

CHANNEL

AUDIO

INPUT

CLASS D

MODULATOR

CLASS D

MODULATOR

LEFT

CHANNEL

GAIN

DIGITAL

GAIN

CONTROL

OUTPUT

CONTROL

OUTPUT

PROTECTION

MONO

PROTECTION

MONO

G1, G2

TH0, TH1,

TH2

TH0, TH1,

TH2

TEMP

STEREO MODE

MONO MODE

________________________________________________________________ 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...24

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与MAX9708ETN相关器件

型号	品牌	获取价格	描述	数据表
MAX9708ETN/V+	MAXIM	获取价格	Audio Amplifier, 42W, 2 Channel(s), 1 Func, BICMOS, TQFN-56
MAX9708ETN+	MAXIM	获取价格	Audio Amplifier, 42W, 1 Channel(s), 1 Func, BICMOS, PDSO56, ROHS COMPLIANT, PLASTIC, TQFN-
MAX9708ETN+T	MAXIM	获取价格	Audio Amplifier, 1 Channel(s), 1 Func, BICMOS, PDSO56, LEAD FREE, PLASTIC, TQFN-56
MAX9708ETN+TD	MAXIM	获取价格	Audio Amplifier, 42W, 1 Channel(s), 1 Func, BICMOS, PDSO56, LEAD FREE, PLASTIC, TQFN-56
MAX9709	MAXIM	获取价格	25W/50W, Filterless, Spread-Spectrum, Stereo/Mono, Class D Amplifier
MAX9709	ADI	获取价格	25W/50W、无需虑波、扩频、单声道/立体声、D类放大器
MAX9709ECB	MAXIM	获取价格	25W/50W, Filterless, Spread-Spectrum, Stereo/Mono, Class D Amplifier
MAX9709ECB+	MAXIM	获取价格	Audio Amplifier, 29W, 2 Channel(s), 1 Func, BICMOS, PQFP64, 10 X 10 MM, 1.40 MM HEIGHT, RO
MAX9709ECB+T	MAXIM	获取价格	Audio Amplifier, 29W, 2 Channel(s), 1 Func, BICMOS, PQFP64, 10 X 10 MM, 1.40 MM HEIGHT, MS
MAX9709ETN	MAXIM	获取价格	25W/50W, Filterless, Spread-Spectrum, Stereo/Mono, Class D Amplifier

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