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19-5912; Rev 0; 6/11
E V A L U A T I O N K I T A V A I L A B L E
MAX98309/MAX98310
Mono 1.4W Class AB Audio Amplifiers
General Description
Benefits and Features
S EnhancesꢀSystemꢀPerformance
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.
ꢀDifferentialꢀInputꢀImprovesꢀNoiseꢀImmunity
ꢀIndustry-LeadingꢀClick-and-PopꢀSuppression
ꢀHighꢀ90dBꢀPSRRꢀ(f ꢀ=ꢀ217Hz)
IN
S SmallerꢀSolutionꢀSize
ꢀ1mmꢀxꢀ1mmꢀWLPꢀFootprint
The ICs are offered with an internally fixed 0dB, 3dB,
6dB, and 9dB gain (MAX98310) or an externally set gain
(MAX98309) through external resistors.
S ExtendsꢀBatteryꢀLife
ꢀLowꢀQuiescentꢀCurrent
The MAX98309 feature a 10ms or 100ms pin-selectable
turn-on time, while the MAX98310 has a preset 5ms turn-
on time.
S DeliversꢀRobustꢀSystemꢀDesign
ꢀThermalꢀOverloadꢀProtection
ꢀShort-CircuitꢀProtection
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.
S 1.2mAꢀSupplyꢀCurrentꢀ(V ꢀ=ꢀ3.7V)
DD
S 750mWꢀintoꢀ8Iꢀ(V ꢀ=ꢀ3.7V)
DD
S 2.5Vꢀtoꢀ5.5VꢀSupplyꢀOperation
Applications
S Pin-Selectable,ꢀInternally-FixedꢀGainꢀ(MAX98310)
S 1.8VꢀLogic-CompatibleꢀSHDNꢀInput
Cell Phones/Smartphones
Digital Cameras
GPS
Ordering Information appears at end of data sheet.
Portable Media Players
e-Readers
For related parts and recommended products to use with this part,
refer to www.maxim-ic.com/MAX98309.related.
Tablets
Simplified Block Diagram
2.5V TO 5.5V
R
F
2.5V TO 5.5V
0.1µF
1µF
0.1µF
1µF
BIAS
BIAS
V
GAIN
DD
MAX98310
BIAS
BIAS
V
TON
R
F
DD
MAX98309
V
DD
C
C
C
C
IN
IN
R
R
R
IN
IN
IN
IN
OUT+
OUT-
OUT+
IN-
IN-
IN+
BIAS
BIAS
IN
IN
R
IN+
OUT-
GND
SHDN
GND
R
F
SHDN
GND
R
F
Forꢀpricing,ꢀdelivery,ꢀandꢀorderingꢀinformation,ꢀpleaseꢀcontactꢀMaximꢀDirectꢀatꢀ1-888-629-4642,ꢀ
orꢀvisitꢀMaxim’sꢀwebsiteꢀatꢀwww.maxim-ic.com.