MAX98314_1111 Datasheet, PDF(1/14 Page) Maxim Integrated Products – Mono 3.2W Class D Amplifier with Integrated Input Coupling Capacitors

19-6124; Rev 0; 11/11

EVALUATION KIT AVAILABLE

MAX98314

Mono 3.2W Class D Amplifier

with Integrated Input Coupling Capacitors

General Description

The MAX98314 mono 3.2W Class D amplifier provides

Class AB audio performance with Class D efficiency.

This device offers five selectable gain settings (0dB,

3dB, 6dB, 9dB, and 12dB) set by a single gain-select

input (GAIN).

Active emissions limiting (AEL) edge rate and overshoot

control circuitry and a filterless spread-spectrum modu-

lation (SSM) scheme greatly reduce EMI and eliminate

the need for output filtering found in traditional Class D

devices.

The ICâs low 0.95mA at 3.7V, 1.2mA at 5.0V quiescent

current extends battery life in portable applications.

Highly linear, integrated input coupling capacitors (CIN)

reduce solution size and provide excellent THD+N, PSRR,

and CMRR performance at low frequencies vs. standard

Class D amplifiers using external input capacitors.

The IC is available in a small 9-bump, 0.3mm pitch WLP

(1.0mm x 1.0mm x 0.80mm) package and is specified

over the -40NC to +85NC extended temperature range.

Applications

Mobile Phones

Portable Audio

Notebook Computers

MP3 Players

Netbook Computers

VoIP Phones

Features

S Integrated Input Coupling Capacitors with

Excellent Linearity

ï² fC = 100Hz (6dB)

ï² fC = 200Hz (12dB)

S Low Quiescent Current

ï² 0.95mA at 3.7V

ï² 1.2mA at 5.0V

S Delivers High Output Power at 10% THD+N

ï² 3.2W into 4I, VPVDD = 5V

ï² 960mW into 8I, VPVDD = 3.7V

S Ultra-Low Noise: 19ÂµV

S Eliminates Output Filtering Requirement

ï² Spread Spectrum and Active Emissions Limiting

S Click-and-Pop Suppression

S Thermal and Overcurrent Protection

S Low Current Shutdown Mode

S Small, Space-Saving Package

Simplified Block Diagram

CIN

MAX98314

CLASS D

MODULATOR

CIN

AND H-BRIDGE

Ordering Information appears at end of data sheet.

GAIN CONTROL

For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX98314.related

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maximâs website at www.maxim-ic.com.

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