Maxim MAX98356 PDM Input Audio Amplifiers
Maxim MAX98356 PDM Input Audio Amplifier is a digital pulse-density modulated (PDM) input Class D power amplifier that provides Class AB audio performance with Class D efficiency. The MAX98356 Audio Power Amplifier from Maxim takes a stereo pulse density modulated (SPDM) input signal directly into the DAC and can be configured to produce a left channel, right channel, or (left + right)/2 output from the stereo input data. This IC features an extremely robust digital audio interface with very high wideband jitter tolerance (12ns typ) on PDM_CLK. The MAX98356 offers five selectable gain settings (3dB, 6dB, 9dB, 12dB, and 15dB) set by a single gain-select input (GAIN) and is available in a 9-pin WLP package (1.345mmx1.435mmx0.64mm). Other MAX98356 features include 2.5V to 5.5V single supply voltage operation, 3.2W output power into 4Ω at 5V, and operating temperature range -40ºC to +85ºC. The MAX98356 Evaluation Kit is a fully assembled and tested PCB that evaluates the MAX98356 PDM digital input Class D power amplifier. The MAX98356 Evaluation Kit operates from a single 2.5V to 5.5V power supply and is capable of delivering 3.2W into a 4Ω load with either filterless Class D outputs or with an optional Class D filter that eases evaluation.