A Concise Overview of TIM by Bob Cordell

This set of articles was written in the early 1980’s by Bob Cordell, a few years after Matti Otala (RIP) identified TIM (Transient Inter-Modulation) as the probable cause of sonic imperfections in high feedback solid state amplifiers in the 1970’s. Otala’s paper sent shock waves through the amplifier design community but sadly it ended up […]

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Opamp Noise Visualizer

This Excel spread sheet tool was developed from one by Steve Hagman (www.AnalogHome.com) and allows en and ien data for up to 7 opamps to be compared.  When using the tool, make sure you enter comparable data – so for example,  always use the same frequency to make the comparison.  I normally use 1 kHz […]

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