Looking for ADC true bipolar with high MSPS!

ADI does not have a 10Msps SAR ADC with true bipolar inputs. The LTC2386-16 is a 10Msps SAR ADC with a 0-4.096V absolute input voltage range. It should be possible to translate your input signal to the common mode range of the LTC2386-16.

What is the input signal voltage range? What is the input signal bandwidth? What kind of SNR and THD specs are  required?

Hi, thanks for the quick reply

The voltage signal range will probably be in the mV range (10-250mV), but I think I will amplify the voltage signals before injecting them into the ADC.
The signal bandwidth goes from 50k to 500kHz. I was looking for 10MSPS because I wanted to do a (10 times) oversampling. (As an alternative, I'll look up undersampling)
SNR circa 90dB, THD circa -100dB.

I like the LTC2370-16 (2MSPS). All I have to do is raise the input voltage to the input range (0V to VREF), but that should not be a big problem. For the beginning 2MSPS are enough.

The LTC2370-16 will not provide the performance you are looking for above fin=100kHz. See the typical performance curves on page 6 of the LTC2370-16 data sheet.

You might consider the LTC2385-16. SNR and THD performance are within your desired specs well beyond 500kHz.

Using the AD8139 differential ADC driver you should be able to take your single-ended true bipolar signal and convert it to a differential signal, compatible with the signal levels of the LTC2385-16. See Figure 61 as an example on page 21 of AD8139 data sheet.

thank you for your help.
Your hints helped me a lot.
best regards