MAX97001EWP+ MAXIM [Maxim Integrated Products], MAX97001EWP+ Datasheet

MAX97001EWP+

Manufacturer Part Number

MAX97001EWP+

Description

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

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.MAX97001EWP.pdf (36 pages)

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19-5130; Rev 0; 1/10

The MAX97001 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 MAX97001 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.

Audio Subsystem with Mono Class D Speaker

Cell Phones

Portable Multimedia Players

________________________________________________________________ _Maxim Integrated Products_ _ 1

General Description

1.8V

POWER SUPPLY

and Class H Headphone Amplifiers

STEREO/

MONO

INPUT

MONO

INPUT

Applications

BATTERY

C interface.

LIMITER

CONTROL

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

VOLUME

MAX97001EWP+

2.7V_to_5.5V_Speaker_Supply_Voltage

1.6V_to_2V_Headphone_Supply_Voltage

700mW_Speaker_Output_(V

+_68µH)

37mW/Channel_Headphone_Output_(R

Low-Emission_Class_D_Amplifier

Efficient_Class_H_Headphone_Amplifier

Ground-Referenced_Headphone_Outputs

2_Stereo_Single-Ended/Mono_Differential_Inputs

Integrated_Distortion_Limiter_(Speaker_Outputs)

Integrated_DPST_Analog_Switch

No_Clicks_and_Pops

TDMA_Noise_Free

2mm_x_2.5mm,_20-Bump,_0.5mm_Pitch_WLP_

Package

PART

MAX97001

AMPLIFIER

CLASS D

CLASS H

CHARGE

BYPASS

PUMP

Simplified Block Diagram

-40NC to +85NC

TEMP_RANGE

Ordering Information

PVDD

_=_3.7V,_Z

PIN-PACKAGE

Features

20 WLP

_=_16I)

SPK

_=_8ω

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