ADS54J64: Hpf characteristic

Frank Sun

Intellectual 925 points

Part Number: ADS54J64

Greetings,

I want to know the hpf characteristic of ADS54J64.

Thanks a lot,

Regards,

over 5 years ago

0 jim s over 5 years ago

TI__Guru* 91947 points

Yumiko,

Can you be more specific? What exactly are you interested in? Is it high analog input rates? High sampling rate? What is missing from the data sheet that we can help you with?

Regards,

Jim

0 Frank Sun over 5 years ago in reply to jim s

Intellectual 925 points

Hi Jim,

I want to know the high pass filter characteristic of half band filter in stage-1 filter.

Thanks.

0 Frank Sun over 5 years ago in reply to jim s

Intellectual 925 points

Hi Jim,

Can you give support on this？

Thanks a lot.

0 jim s over 5 years ago in reply to Frank Sun

TI__Guru* 91947 points

I am checking with the design team regarding this.

0 Frank Sun over 5 years ago in reply to jim s

Intellectual 925 points

OK,thank u,waiting your feedback.

0 jim s over 5 years ago in reply to Frank Sun

TI__Guru* 91947 points

Yumiko,

The filter bandwidth is related to Nyquist. For example, if sampling at 1GHz, the low pass mode would give you 0-235MHz bandwidth and the High pass mode would give you 265-500MHz of bandwidth.

This is a half band filter with # of taps optimized for power consumption with approximately 47% passband.The stop-band attenuation is approximately 40 dB. See figures 50 and 51 of the data sheet.

Regards,

Jim

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ADS54J64: Hpf characteristic