MAX9700

更新时间： 2024-11-06 22:25:31

品牌	Logo	应用领域
美信 - MAXIM		音频放大器
页数	文件大小	规格书
19页	533K
描述
1.2W, Low-EMI, Filterless, Class D Audio Amplifier

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MAX9700 数据手册

19-3030; Rev 1; 6/04

1.2W, Low-EMI, Filterless,

Class D Audio Amplifier

General Description

Features

♦ Filterless Amplifier Passes FCC Radiated

The MAX9700 mono class D audio power amplifier pro-

vides class AB amplifier performance with class D effi-

ciency, conserving board space and extending battery

life. Using a class D architecture, the MAX9700 delivers

1.2W into an 8Ω load while offering efficiencies above

90%. A patented, low-EMI modulation scheme renders

the traditional class D output filter unnecessary.

Emissions Standards with 100mm of Cable

♦ Unique Spread-Spectrum Mode Offers 5dB

Emissions Improvement Over Conventional

Methods

♦ Optional External SYNC Input

♦ Simple Master-Slave Setup for Stereo Operation

♦ 94% Efficiency

The MAX9700 offers two modulation schemes: a fixed-

frequency (FFM) mode, and a spread-spectrum (SSM)

mode that reduces EMI-radiated emissions due to the

modulation frequency. Furthermore, the MAX9700 oscil-

lator can be synchronized to an external clock through

the SYNC input, allowing the switching frequency to be

user defined. The SYNC input also allows multiple

MAX9700s to be cascaded and frequency locked, mini-

mizing interference due to clock intermodulation. The

device utilizes a fully differential architecture, a full-

bridged output, and comprehensive click-and-pop sup-

pression. The gain of the MAX9700 is set internally

(MAX9700A: 6dB, MAX9700B: 12dB, MAX9700C:

15.6dB, MAX9700D: 20dB), further reducing external

component count.

♦ 1.2W into 8Ω

♦ Low 0.01% THD+N

♦ High PSRR (72dB at 217Hz)

♦ Integrated Click-and-Pop Suppression

♦ Low Quiescent Current (4mA)

♦ Low-Power Shutdown Mode (0.1µA)

♦ Short-Circuit and Thermal-Overload Protection

♦ Available in Thermally Efficient, Space-Saving

Packages

10-Pin TDFN (3mm ✕ 3mm ✕ 0.8mm)

10-Pin µMAX

12-Bump UCSP (1.5mm ✕ 2mm ✕ 0.6mm)

Ordering Information

The MAX9700 features high 72dB PSRR, a low 0.01%

THD+N, and SNR in excess of 90dB. Short-circuit and

thermal-overload protection prevent the device from

damage during a fault condition. The MAX9700 is avail-

able in 10-pin TDFN (3mm ✕ 3mm ✕ 0.8mm), 10-pin

µMAX, and 12-bump UCSP™ (1.5mm ✕ 2mm ✕ 0.6mm)

packages. The MAX9700 is specified over the extended

-40°C to +85°C temperature range.

PIN-

PACKAGE

TOP

MARK

PART

TEMP RANGE

MAX9700AETB

MAX9700AEUB

MAX9700AEBC-T

MAX9700BETB

MAX9700BEUB

MAX9700BEBC-T

-40^oC to +85^oC 10 TDFN

-40^oC to +85^oC 10 µMAX

-40^oC to +85^oC 12 UCSP-12

-40^oC to +85^oC 10 TDFN

-40^oC to +85^oC 10 µMAX

-40^oC to +85^oC 12 UCSP-12

ACM

—

ACI

—

Applications

—

Cellular Phones

PDAs

MP3 Players

Portable Audio

Ordering Information continued at end of data sheet.

Selector Guide appears at end of data sheet.

Block Diagram

Pin Configurations

TOP VIEW

DIFFERENTIAL

AUDIO INPUT

MODULATOR

AND H-BRIDGE

10 PV

IN+

IN-

OUT-

OUT+

PGND

SYNC

MAX9700

SYNC

INPUT

GND

SHDN

OSCILLATOR

MAX9700

TDFN/µMAX

Pin Configurations continued at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

________________________________________________________________ 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...19

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与MAX9700相关器件

型号	品牌	获取价格	描述	数据表
MAX9700_08	MAXIM	获取价格	1.2W, Low-EMI, Filterless, Class D Audio Amplifier
MAX9700_V01	MAXIM	获取价格	1.2W, Low-EMI, Filterless, Class D Audio Amplifier
MAX97000	MAXIM	获取价格	Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifier
MAX97000_V01	MAXIM	获取价格	Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifier
MAX97000EVKIT	MAXIM	获取价格	MAX97000 Evaluation Kit
MAX97000EVKIT+	MAXIM	获取价格	MAX97000 Evaluation Kit
MAX97000EWA+	MAXIM	获取价格	Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifier
MAX97000EWA+T	MAXIM	获取价格	Volume Control Circuit,
MAX97001	MAXIM	获取价格	Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers
MAX97001EVKIT	MAXIM	获取价格	MAX97001 Evaluation Kit

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