ADS42JB46: Minimum Input Amplitude

John Fedak

Part Number: ADS42JB46

Hi Team,

My customer is interested in getting an understanding of the minimum input amplitude possible on the ADS42JB46EVM + TSW14J50.

Their radio signal can come in as low as -110dBm and through a series of components, gain about 30dB.

They are interested to evaluate two-tone distortion at these lower power levels (similar to graph 17 in the datasheet). What is the lowest analog input signal that is possible to evaluate these two-tone distortion tests? Can this be done with the -80dBm lowest input signal?

Please let me know fi you have any questions, thank you!

Regards,

~John

over 6 years ago

0 dBrock over 6 years ago

TI__Genius 12780 points

Hi John,

We are taking a closer look at this, and will get back with you soon.

Best Regards,

Dan

0 jim s over 6 years ago in reply to dBrock

TI__Guru* 91947 points

John,

Yes, it should be possible. -80dBm will correspond to -90dBFS. Part should be able resolve this. This level will be at the ADC input pins. The input signal may need more power at the SMA input due to the loss of the transformer and discrete components.

Regards,

Jim

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ADS42JB46: Minimum Input Amplitude