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In ADC3424 datasheet P.1, ADC3424 device spec is noted as follows,
"12-Bit, 25-MSPS to 125-MSPS, Analog-to-Digital Converter"
On the other hand, in ADC3424 datasheet P.5 (Recommended Operating Conditions), it is noted as follows,
"(3) With the clock divider enabled by default for divide-by-1. Maximum sampling clock frequency for the divide-by-4 option is 500 MSPS."
Do you mean about this note?
Can we get 500MSPS input analog signal sampling with ADC3424?
If we can do it, how do we get the LVDS output signal frequency?
Is it 3GHz? (It mean 2-wire 500MSPS 12bit output signal 500 x 12 / 2 = 3000MHz.)
Thank you.
Yoshinori Kikui
Hi Yoshinori,
The max sample rate will be 125MSPS. The divider just allows for extra design flexibility. For instance, if you already have a 250MHz clock present in your design, diving by 2 will meet the sample rate requirement for the device. The device will sample at the divided rate.
Thanks, Chase