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 _    _      ___     _    _    _    _    __   _   
| \  / ||   / _ \\  | \  / || | || | || | || | || 
|  \/  ||  / //\ \\ |  \/  || | || | || | '--' || 
| .  . || |  ___  ||| .  . || | \\_/ || | .--. || 
|_|\/|_|| |_||  |_|||_|\/|_||  \____//  |_|| |_|| 
`-`  `-`  `-`   `-` `-`  `-`    `---`   `-`  `-`

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Text this: Class D Amplifiers (CDAs) : PWM-in-PWM-out CDA, Filterless Bang-Bang CDA, and high-frequency high-efficiency CDA for Envelope Tracking