MAX9702B

更新时间： 2024-11-25 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
32页	1406K
描述
1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone Amplifier

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MAX9702B 数据手册

19-3608; Rev 0; 6/05

1.8W, Filterless, Stereo, Class D Audio Power

Amplifier and DirectDrive Stereo Headphone Amplifier

General Description

Features

♦ Patented Spread-Spectrum Modulation Reduces

The MAX9702 combines a highly efficient Class D

speaker amplifier with a high-linearity Class AB head-

phone amplifier. This ensures maximum battery life in

speaker mode and maximum performance in head-

phone mode. The MAX9702 delivers up to 1.8W per

channel into an 8Ω load from a 5V power supply.

Maxim’s 2nd-generation, spread-spectrum modulation

scheme renders the traditional Class D output filter

unnecessary.

EMI Emissions

♦ Programmable Mono, Stereo, Mute, and Mix

Functions

♦ 1.1W Stereo Output (8Ω, V

= 5V)

♦ 48mW Headphone Output (32Ω, V

= 3.3V)

♦ 95% Efficiency (R = 8Ω, P = 1.1W)

♦ High 73dB PSRR (f = 217Hz)

♦ I²C Programmable Gain Up to +21dB

The MAX9702 speaker amplifier offers two modulation

schemes: a fixed-frequency (FFM) mode and a spread-

spectrum (SSM) mode that reduces EMI-radiated emis-

sions. The MAX9702 speaker amplifier features a fully

differential architecture, full-bridged (BTL) output, and

comprehensive click-and-pop suppression. The

MAX9702 speaker amplifier features high 75dB PSRR,

low 0.07% THD+N, and SNR in excess of 97dB. Short-

circuit and thermal-overload protection prevent the

device from being damaged during a fault condition.

♦ Integrated Click-and-Pop Suppression

♦ Low-Power Shutdown Mode (0.1µA)

♦ Short-Circuit and Thermal-Overload Protection

♦ ±8kV (HBM) ESD-Protected Headphone Driver

Outputs

Ordering Information

I²C SLAVE

ADDRESS

PKG

CODE

PART

PIN–PACKAGE

The headphone amplifier uses Maxim’s patented

DirectDrive^TMarchitecture that produces a ground-ref-

erenced output from a single supply, eliminating the

need for large DC-blocking capacitors, saving cost,

board space, and component height. A high 80dB

PSRR and low 0.02% THD+N ensures clean, low-distor-

tion amplification of the audio signal.

28 TSSOP

MAX9702EUI+

MAX9702BEUI+

MAX9702ETI+

MAX9702BETI+

1001100

1001110

1001100

1001110

U28-1

28 TSSOP

28 TQFN-EP*

T2855-6

Note: All devices specified for -40°C to +85°C operating tem-

An I C interface sets the speaker and headphone gain,

mono, stereo, and mute functions.

perature range.

*EP = Exposed paddle.

The MAX9702 is available in 28-pin thin QFN-EP (5mm

x 5mm x 0.8mm) and 28-pin TSSOP packages. The

MAX9702 is specified over the extended -40°C to

+85°C temperature range.

+ Denotes lead-free package.

Simplified Block Diagram

Applications

RIGHT MODULATOR

AND H-BRIDGE

INR

∑

Cellular Phones

Notebook PCs

GAIN

CONTROL

INM

INL

PDAs

LEFT MODULATOR

AND H-BRIDGE

Handheld Gaming Consoles

Pin Configurations appear at end of data sheet.

SHDN

SDA

SCL

*Purchase of I C components from Maxim Integrated Products,

Inc. or one of its sublicensed Associated Companies, conveys

SYNC

OSCILLATOR

SYNC_OUT

a license under the Philips I C Patent Rights to use these com-

ponents in an I C system, provided that the system conforms

MAX9702

to the I C Standard Specification as defined by Philips.

________________________________________________________________ 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...32

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与MAX9702B相关器件

型号	品牌	获取价格	描述	数据表
MAX9702BETI+	MAXIM	获取价格	1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone A
MAX9702BETI+T	MAXIM	获取价格	Audio Amplifier, 1.8W, 2 Channel(s), 1 Func, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE,
MAX9702BEUI+	MAXIM	获取价格	1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone A
MAX9702BEUI+T	MAXIM	获取价格	Audio Amplifier, 1 Func, BICMOS, PDSO28
MAX9702ETI+	MAXIM	获取价格	1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone A
MAX9702EUI+	MAXIM	获取价格	1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone A
MAX9703	MAXIM	获取价格	15W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers
MAX9703	ADI	获取价格	10W立体声/15W单声道、无需滤波的扩频D类放大器
MAX9703_V01	MAXIM	获取价格	10W Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers
MAX9703ETJ	MAXIM	获取价格	15W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers

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