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MAX98308

Maxim Integrated
Part Number MAX98308
Manufacturer Maxim Integrated
Description 3.3W Mono Class DG Multilevel Audio Amplifier
Published Mar 27, 2020
Detailed Description MAX98307/MAX98308 EVALUATION KIT AVAILABLE 3.3W Mono Class DG Multilevel Audio Amplifier General Description The MAX98...
Datasheet PDF File MAX98308 PDF File

MAX98308
MAX98308


Overview
MAX98307/MAX98308 EVALUATION KIT AVAILABLE 3.
3W Mono Class DG Multilevel Audio Amplifier General Description The MAX98307/MAX98308 fully differential mono Class DG multilevel power amplifiers with integrated inverting charge pumps offer highly efficient, high-power audio solutions for portable applications.
Class DG multilevel modulation extends the dynamic range of the output signal by employing a charge-pumpgenerated negative rail as needed to extend the supply range.
This scheme results in high efficiency over a wide output power range.
The ICs combine Maxim’s active emissions limiting edge rate and overshoot control circuitry with multilevel output modulation to greatly reduce EMI.
These features eliminate the need for output filtering as compared to traditional Class D devices, reducing component count and cost.
The MAX98307’s 16-pin TQFN package features an adjustable gain set by external resistors.
The MAX98308’s space-saving 12-bump WLP package features an internally fixed gain of 8.
5dB, 11.
5dB, 14.
5dB, 17.
5dB, and 20.
5dB set by a single gain input.
Both devices operate over the extended -40°C to +85°C temperature range.
Applications ●● Cellular Phones ●● Smartphones ●● Notebook Computers ●● VoIP Phones ●● Portable Audio ●● Tablet PCs Simplified Block Diagrams SHDN VCC FB+ MAX98307 PVDD PVSS SVSS C1P CHARGE PUMP C1N IN+ OUT+ CLASS DG IN- AMPLIFIER OUT- Benefits and Features ●● High Efficiency Combined with High Output Power • Class DG Multilevel Modulation Ensures Maximum Efficiency Over Wide Output Power Range ●● Improves Battery Life • Low 1.
85mA Quiescent Current ●● High Output Power at 1% THD+N • 1.
54W at VPVDD = 3.
6V, 8Ω + 68μH Load • 2.
85W at VPVDD = 5V, 8Ω + 68μH Load ●● High Output Power at 10% THD+N • 1.
77W at VPVDD = 3.
6V, 8Ω + 68μH Load • 3.
3W at VPVDD = 5V, 8Ω + 68μH Load ●● 84% Efficiency (VPVDD = 3.
6V, at 500mW Output) ●● Active Emissions Limiting and Class DG Multilevel Output Modulation Eliminates EMI Output Filtering Req...


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