IWR6843: Can I change RX IFA LPF cutoff frequency ?

moon sangik

Intellectual 320 points

Part Number: IWR6843

I know that in this ICs can change the cutoff frequencies of two stages of the HPF (HPF1 and HPF2) in the IF cirquits.

Please tell me whether it is possible to change the cutoff frequency of the LPF before the ADC?

Thanks.

over 4 years ago

0 Vaibhav Mahimkar over 4 years ago

TI__Mastermind 23725 points

Hello

Can you please provide an example which range of frequency you wish to control and at what stage. Available filters are on the IF frequency range and wonder what you are trying to achieve outside of RF and IF frequency control.

Thank you,

Vaibhav

0 zigang Yang over 4 years ago

TI__Mastermind 40495 points

HI, Moon:

The RX LPF is not programmable.

Best,

Zigang

0 moon sangik over 4 years ago in reply to Vaibhav Mahimkar

Intellectual 320 points

I want to control IF frequency from 13.33KHz to 1.333MHz

Thanks

0 zigang Yang over 4 years ago in reply to moon sangik

TI__Mastermind 40495 points

The RX LPF is related to the ADC sampling rate. You can configure different ADC rate to adjust this LPF.

Best,

Zigang

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IWR6843: Can I change RX IFA LPF cutoff frequency ?