Question about the AFE4490 Dynamic range for RX

George Duval

Other Parts Discussed in Thread: AFE4490

I am evaluating the AFE4490 and was trying to find in the spec the Dynamic range for the RX ..it claims to be "high" and I see 110dB for the TX but I just can't seem to find this in the current spec. Also, for teh Sig-Del ADC, what would be the equivalent INL and DNL?

over 11 years ago

0 Guilherme Borba over 11 years ago

TI__Intellectual 1910 points

George,

I will look into this and try to have a response on Monday.

Regards,

Gui

0 Guilherme Borba over 11 years ago in reply to Guilherme Borba

TI__Intellectual 1910 points

Hi George,

The receiver dynamic range is very dependent on a lot of conditions such as PRF, TIA gain setting, number of ADC averages, etc. Depending on these settings, for example 525Hz PRF, 200pF detector cap, 500k TIA gain, 25% duty cycle, and 8 ADC averages, the receiver dynamic range can be as high as 106-107 dB.

We have not measured the ADC INL and DNL separately.

Let me know if you have any other questions.

Regards,

Gui

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Question about the AFE4490 Dynamic range for RX