max97002 Maxim Integrated Products, Inc., max97002 Datasheet

max97002

Manufacturer Part Number

max97002

Description

Audio Subsystem With Mono Class D Speaker And Class H Headphone Amplifiers

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.MAX97002.pdf (36 pages)

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19-5111; Rev 0; 1/10

The MAX97002 mono audio subsystem combines a

mono speaker amplifier with a stereo headphone ampli-

fier and an analog DPST switch. The headphone and

speaker amplifiers have independent volume control and

on/off control. The 4 inputs are configurable as 2 differ-

ential inputs or 4 single-ended inputs.

The entire subsystem is designed for maximum effi-

ciency. The high-efficiency, 700mW, Class D speaker

amplifier operates directly from the battery and con-

sumes no more than 1FA in shutdown mode. The Class

H headphone amplifier utilizes a dual-mode charge

pump to maximize efficiency while outputting a ground-

referenced signal that does not require output coupling

capacitors.

The speaker amplifier incorporates a distortion limiter to

automatically reduce the volume level when excessive

clipping occurs. This allows high gain for low-level sig-

nals without compromising the quality of large signals.

All control is performed using the 2-wire I

The MAX97002 operates over the extended -40NC to

+85NC temperature range, and is available in the 2mm x

2.5mm, 20-bump, WLP package (0.5mm pitch).

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.

Cell Phones

Portable Media Players

Speaker and Class H Headphone Amplifiers

_______________________________________________________________ Maxim Integrated Products 1

General Description

Audio Subsystem with Mono Class D

1.8V

POWER SUPPLY

STEREO/

MONO

INPUT

MONO

INPUT

Applications

BATTERY

C interface.

LIMITER

CONTROL

VOLUME

S 2.7V to 5.5V Speaker Supply Voltage

S 1.6V to 2V Headphone Supply Voltage

S 700mW Speaker Output (V

S 37mW/Channel Headphone Output (R

S Low-Emission Class D Amplifier

S Efficient Class H Headphone Amplifier

S Ground-Referenced Headphone Outputs

S 2 Stereo Single-Ended/Mono Differential Inputs

S Integrated Distortion Limiter (Speaker Outputs)

S Integrated DPST Analog Switch

S No Clicks and Pops

S TDMA Noise Free

S 2mm x 2.5mm, 20-Bump, 0.5mm Pitch WLP

MAX97002EWP+

Package

SPK

PART

= 8ω + 68µH)

MAX97002

AMPLIFIER

CLASS H

CHARGE

CLASS D

BYPASS

PUMP

Simplified Block Diagram

-40NC to +85NC

TEMP RANGE

Ordering Information

PVDD

= 3.7V,

PIN-PACKAGE

Features

20 WLP

= 16I)

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