Hi
I am working on some fun stuff for my own firm. I need a high speed ADC to acquire a signal up to 25MHz, preferable with high dynamic range in the range of 80 dB
Initially I was thinking to get 90dB, I would need a 14 bit converter (16 times 6dB per bit)
For example the ADS4142 14bit converter:
It costs 15 USD, but has power spectrum on page 19 with a nice peak and noise -100dB down
Then I looked at the 3USD part, THS1060, just to see what a low cost device could do:
Page 9 shows the output power spectrum, shows a nice peak and noise down to -90dB
Seems like not a big difference in performance.
I have never down high speed acquisition before. Anything obvious I am missing?
Regards
Klaus