MAX98309:Mono 1.4W Class AB Audio Amplifiers

Delivers Low Quiescent Current and Excellent SNR

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 feature 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 -40°C to +85°C temperature range.

Key Features
  • Enhances System Performance
    • Differential Input Improves Noise Immunity
    • Industry-Leading Click-and-Pop Suppression
    • High 90dB PSRR (fIN = 217Hz)
  • Smaller Solution Size
    • 1mm x 1mm WLP Footprint
  • Extends Battery Life
    • Low Quiescent Current
  • Delivers Robust System Design
    • Thermal Overload Protection
    • Short-Circuit Protection
  • 1.2mA Supply Current (VDD = 3.7V)
  • 750mW into 8Ω (VDD = 3.7V)
  • 2.5V to 5.5V Supply Operation
  • Pin-Selectable, Internally-Fixed Gain (MAX98310)
  • 1.8V Logic-Compatible Active-Low SHDN Input
MAX98309, MAX98310: Simplified Block Diagram
MAX98309, MAX98310: Simplified Block Diagram
Applications/Uses
  • Cell Phones/Smartphones
  • Digital Cameras
  • e-Readers
  • GPS
  • Portable Media Players
  • Tablets
DataSheet
titleDownload file
MAX98309-MAX98310 Data SheetMAX98309-MAX98310.pdf
Parametrics
Part NumberClassSpkr. Amp. VCC
(V)
Spkr. Amp. VCC
(V)
Spkr. Amp. ICC
(mA)
POUT into 4Ω @ 1% THD+N
(W)
POUT into 4Ω @ 10% THD+N
(W)
POUT into 8Ω @ 1% THD+N
(W)
POUT into 8Ω @ 10% THD+N
(W)
Spkr. Amp. Half Pwr. THD+N
(%)
SNR
(dB)
PSRR
(dB)
Package/PinsBudgetary
Price
minmaxtypminminminminA- WeightedminSee Notes
MAX98309AB2.55.51.22.12.71.41.70.0111093WLP/9$0.34 @1k
MAX98310WLP/9
Design kits & evaluation modules
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX98309EWL+ActiveWLP,;9 pin;WLP;-40°C to +85°CLead Free
MAX98309EWL+TActiveWLP,;9 pin;WLP;-40°C to +85°CLead Free
MAX98309-MAX98310.pdf MAX98310
MAX98309-MAX98310.pdf MAX98310