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Do I need add protection at the input of ADC (3V supply) when driving by HMC960LP4E

I'm planning using HMC960LP4E to drive a pipeline ADC, the ADC's supply is 3V. I've set the HMC960LP4E's CM pin to 1.5V. The datasheet says the HMC960LP4E's output is 2Vppd max. So the voltage on any output pin in my configuration should always between 0.5V to 2.5V, right? Need I add clamping diode to power supply at the ADC input?

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[edited by: diverger at 6:49 AM (GMT -4) on 25 Oct 2018]
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