MAX98309/MAX98310

Mono 1.4W Class AB Audio Amplifiers

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General Description

The MAX98309/MAX98310 mono 1.4W class AB audio

amplifiers offer low quiescent current while maintaining

excellent SNR and low 0.008% THD+N. These ICs fea-

ture excellent 90dB PSRR and state of the art click-and-

pop suppression.

The ICs are offered with an internally fixed 0dB, 3dB,

6dB, and 9dB gain (MAX98310) or an externally set gain

(MAX98309) through external resistors.

The MAX98309 feature a 10ms or 100ms pin-selectable

turn-on time, while the MAX98310 has a preset 5ms turn-

on time.

The MAX98309/MAX98310 are available in a (1.0mm x

1.0mm) 9-bump, 0.3mm pitch WLP, and are specified over

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

Applications

Cell Phones/Smartphones

Digital Cameras

GPS

Portable Media Players

e-Readers

Tablets

Benefits and Features

S

EnhancesSystemPerformance



DifferentialInputImprovesNoiseImmunity



Industry-LeadingClick-and-PopSuppression



High90dBPSRR(fIN=217Hz)

S

SmallerSolutionSize



1mmx1mmWLPFootprint

S

ExtendsBatteryLife



LowQuiescentCurrent

S

DeliversRobustSystemDesign



ThermalOverloadProtection



Short-CircuitProtection

S

1.2mASupplyCurrent(VDD=3.7V)

S

750mWinto8I(VDD=3.7V)

S

2.5Vto5.5VSupplyOperation

S

Pin-Selectable,Internally-FixedGain(MAX98310)

S

1.8VLogic-CompatibleSHDNInput

Simplified Block Diagram

19-5912; Rev 0; 6/11

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part,

refer to www.maxim-ic.com/MAX98309.related.

E V A L U A T I O N K I T A V A I L A B L E

BIAS

IN-

IN+

OUT+

OUT-

CIN

RIN

RIN

RF

RF

RF

SHDN

GND

CIN

VDD

GND

MAX98310

BIAS

VDD

2.5V TO 5.5V

2.5V TO 5.5V

GAIN

BIAS

0.1µF

1µF

RF

BIAS

IN-

IN+

OUT+

OUT-

CIN

RIN

RIN

SHDN

CIN

VDD

GND

MAX98309

BIAS

TON

BIAS

0.1µF

1µF

Forpricing,delivery,andorderinginformation,pleasecontactMaximDirectat1-888-629-4642,

orvisitMaxim’swebsiteatwww.maxim-ic.com.