MAX97000EWA+ MAXIM [Maxim Integrated Products], MAX97000EWA+ Datasheet

MAX97000EWA+

Manufacturer Part Number

MAX97000EWA+

Description

Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifier

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.MAX97000EWA.pdf (33 pages)

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19-5004; Rev 0; 11/09

The MAX97000 audio subsystem combines a mono

speaker amplifier with a stereo headphone amplifier and

an analog DPST switch. The headphone and speaker

amplifiers have independent volume control and on/off

control. The four inputs are configurable as two differen-

tial inputs or four single-ended inputs.

The entire subsystem is designed for maximum efficiency.

The high-efficiency 725mW Class D speaker amplifier

operates directly from the battery and consumes 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 MAX97000 operates in the extended -40NC to +85NC

temperature range, and is available in the 2mm x 2mm,

25-bump WLP package (0.4mm 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 Multimedia Players

Speaker and Class H Headphone Amplifier

_______________________________________________________________ Maxim Integrated Products 1

General Description

Audio Subsystem with Mono Class D

STEREO/

MONO

INPUT

Applications

POWER SUPPLY

2.7V TO 5.5V

BATTERY

C interface.

LIMITER

VOLUME

SWITCH

CONTROL

S 2.7V to 5.5V Single Supply Voltage

S 725mW Speaker Output (V

S 40mW/Channel Headphone Output (R

S Low-Emission Class D Amplifier

S Efficient Class H Headphone Amplifier

S Ground-Referenced Headphone Outputs

S Two 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 2mm, 25-Bump 0.4mm Pitch WLP Package

+Denotes a lead(Pb)-free/RoHS-compliant package.

VOLUME

MAX97000EWA+

+ 68µH)

PART

AMPLIFIER

CLASS H

MAX97000

CHARGE

PUMP

AMPLIFIER

CLASS D

Simplified Block Diagram

-40NC to +85NC

TEMP RANGE

Ordering Information

PVDD

= 3.7V, Z

PIN-PACKAGE

Features

25 WLP

= 16I)

SPK

= 8I

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