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Class D Audio Amplifiers: What, Why, and How | Analog …
https://www.analog.com/en/analog-dialogue/articles/class-d-audio-amplifiers.html
The goal of audio amplifiers is to reproduce input audio signals at sound-producing output elements, with desired volume and power levels—faithfully, efficiently, and at low distortion. Audio frequencies range from about 20 Hz to 20 kHz, so the amplifier must have good frequency response over this range (less when driving a band-limit…
Class D Audio
http://www.classdaudio.com/
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Class D Audio AmplifiersClass D Audio Amplifiers
https://people.engr.tamu.edu/s-sanchez/ECEN%20607%20Class%20D%202011.pdf
Conventional class D audio amplifier Pulse Width Modulation (PWM) Varies the duty cycle of the converter switches at a high switching freqqyuency (supersonic) to achieve a target average low frequency output voltage. 0 Class D Audio Amplifier (THD = 0.00%) f in = 1.0e+003 Hz
Class-D Audio Amplifiers | Analog Devices
https://www.analog.com/en/products/audio-video/audio-amplifiers/class-d-audio-amplifiers.html
Class-D Audio Amplifiers Analog Devices is a leader in Class-D audio amplifiers and audio signal processing, and we deliver audiophile-level performance with our proven analog and digital technology. We offer a wide range of audio amplifiers, including industry-leading microphone preamps, microphone drivers, line drivers, and receivers.
Class D Audio Amplifier Design - irf.com
http://www.irf.com/product-info/audio/classdtutorial.pdf
Class D amplifier uses MOSFETs that are either ON or OFF. PWM technique is used to express analog audio signals with ON or OFF states in output devices. System ÎGate Drive ÎMOSFET ÎDesign Example www.irf.com Basic PWM Operation COMP Class D switching stage LPF The output signal of comparator goes high when the sine wave is higher than the sawtooth.
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