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High Speed Amplifiers for Video Applications Part 2 Slide 16

The LMH6732’s turn on and turn off has been characterized as popless. In many systems, it turns out that you would want a smooth transition at the output. Examples of these systems would be auto-ranging loops, the input to A/D converters, and as we’ve already shown, an analog video MUX arrangement where the output glitch could be visible on a display. The LMH6732 has been designed in such a way as to not have these undesirable glitches occur during transition. As you can see in this scope photo, the output transitions from off to on with a smooth ramp up of the high frequency sinusoidal waveform. The same thing goes for when the control voltage goes from high to low and the device is turned off again.

PTM Published on: 2011-11-21