max9702etit Maxim Integrated Products, Inc., max9702etit Datasheet

max9702etit

Manufacturer Part Number

max9702etit

Description

Max9702 1.8w, Filterless, Stereo, Class D Audio Power Amplifier And Directdrive Stereo Headphone Amplifier

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.MAX9702ETIT.pdf (31 pages)

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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 1.1W per

channel into an 8Ω load and 1.8W into a 4Ω load from a

5V power supply. Maxim’s 2nd-generation, spread-

spectrum modulation scheme renders the traditional

Class D output filter unnecessary.

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.

The headphone amplifier uses Maxim’s patented

DirectDrive

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.

An I

gain, mono, stereo, and mute functions.

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

x 5mm x 0.8mm) package. The MAX9702 is specified

over the extended -40°C to +85°C temperature range.

19-3608; Rev 1; 10/05

Amplifier and DirectDrive Stereo Headphone Amplifier

Pin Configurations appear at end of data sheet.

†

Inc. or one of its sublicensed Associated Companies, conveys

a license under the Philips I

ponents in an I

the I

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.

Purchase of I

C Standard Specification as defined by Philips.

Cellular Phones

Notebook PCs

PDAs

Handheld Gaming Consoles

†

interface sets the speaker and headphone

C components from Maxim Integrated Products,

C system, provided that the system conforms to

architecture that produces a ground-ref-

________________________________________________________________ Maxim Integrated Products

1.8W, Filterless, Stereo, Class D Audio Power

General Description

C Patent Rights to use these com-

Applications

o Patented Spread-Spectrum Modulation Reduces

o Programmable Mono, Stereo, Mute, and Mix

o 1.1W Stereo Output (8Ω, V

o 48mW Headphone Output (32Ω, V

o 1.8W Stereo Output (4Ω, V

o 94% Efficiency (R

o High 73dB PSRR (f = 217Hz)

o I

o Integrated Click-and-Pop Suppression

o Low-Power Shutdown Mode (0.1µA)

o Short-Circuit and Thermal-Overload Protection

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

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

perature range.

*EP = Exposed paddle.

+ Denotes lead-free package.

MAX9702ETI+

MAX9702BETI+ 28 TQFN-EP*

SYNC

SHDN

EMI Emissions

Functions

Outputs

SDA

INM

SCL

INR

INL

C Programmable Gain Up to +21dB

PART

OSCILLATOR

Simplified Block Diagram

PIN–PACKAGE

28 TQFN-EP*

∑

Ordering Information

= 8Ω, P

MAX9702

RIGHT MODULATOR

LEFT MODULATOR

AND H-BRIDGE

CONTROL

GAIN

= 1.1W)

= 5V)

ADDRESS

1001100

1001110

C SLAVE

Features

= 3.3V)

SYNC_OUT

T2855-6

CODE

PKG

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