AFE7950EVM: RF Sampling ADC/DAC Device AFE7950

AKASH GUPTA

Prodigy 60 points

Part Number: AFE7950EVM
Other Parts Discussed in Thread: AFE7950

I have following queries about the device AFE7950:

1) What is the minimum input RF power at the RX port at DSA=0dB?

2) What is the maximum output power of the TX port?

3) What is the ENOB of ADC?

over 1 year ago

0 Rob Reeder over 1 year ago

TI__Mastermind 27400 points

Hi Akash,

Please provide the sampling rate and analog input/output frequency. This will help us answer this questions.

Also, for #1, min input RF power, meaning, that is needed to see a signal in the FFT spectrum?

Regards,

Rob

0 AKASH GUPTA over 1 year ago in reply to Rob Reeder

Prodigy 60 points

Sampling rate is 1600Msps. Input freq is 2000 MHz.

Yes, at what min. input power, the ADC output FFT output spectrum is clear (i.e.3dB above noise floor)

0 Rob Reeder over 1 year ago in reply to AKASH GUPTA

TI__Mastermind 27400 points

Ok, thank you Akash for clarifying.

Please give me a few days to round up the data.

Thanks,

Rob

0 David Chaparro over 1 year ago in reply to Rob Reeder

TI__Genius 14961 points

Hi Akash,

Here are the responses for your questions:

1) We do not have a spec for this but I was able to set this up for one device on our EVM and I was able to capture the data below with the input signal, 2GHz, level set to -90dBm.

2) The Tx max output power is given in the datasheet for different output frequencies.

3) When sampling at 1600MSPS I was getting a ENOB of about 10.5 Bits, see the screenshot above.

Regards,

David Chaparro

RF & microwave

RF & microwave forum

AFE7950EVM: RF Sampling ADC/DAC Device AFE7950