MAX98307 Series Power Amplifiers

Analog Devices' MAX98307 fully-differential, mono, class DG multilevel power-amplifiers with integrated inverting charge pumps offers 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-pump-generated negative rail as needed to extend the supply range. This scheme results in high-efficiency over a wide output power range. The ICs combine Analog Devices' 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. These devices operate over the extended -40°C to 85°C temperature range.