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AD9467 ADC Input Protection Circuit

Question asked by VinayakJ on Oct 1, 2013
Latest reply on Oct 9, 2013 by VinayakJ


We are using six AD9467 ,16-Bit, 200 MSPS/250 MSPS ADC in one of our High Speed Data Acquisition System.

We have set the ADC reference to 1.2V, allowing us to give 2.4Vpp differential input signal to the ADC.

          I have attached the schematic for your reference.

The input signal is 70MHz(+/- 10KHz) Sine Wave Signal,

However it is quite possible that this voltage exceeds 2.4Vpp by mistake.

Please suggest how the ADC can be protected from such high input signals? 

-Best Regards,

Vinayak Jagzap,