adc12d1600RF sampling frequency

huang yu

Other Parts Discussed in Thread: ADC12D1600RF

Hello ！I have a question,In the ADC12d1600RF datasheet,the chip can directly sample input frequencies up to above 2.7GHz ,however the sampling clock frequency can only achieve 1.6 GHz. So under the maximum frequency can the chip satisfy the Nyquist sampling theorem ? I am looking foward to your replay.thanks

over 13 years ago

0 Jim Brinkhurst1 over 13 years ago

TI__Mastermind 44680 points

Hi Huang

The short answer is that it is possible to sample signals at 2.7 GHz using a data converter that is clocked at 1.6 GHz. This is referred to as undersampling. This can be done as long as the bandwidth of the signal being converted is less than the Nyquist bandwidth of the converter.

For much more detail on this topic, please refer to a few additional references:

www.ti.com/lit/ml/slap084/slap084.pdf

http://en.wikipedia.org/wiki/Undersampling

I hope this is helpful.

Best regards,

Jim B

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adc12d1600RF sampling frequency