Looking for ADC true bipolar with high MSPS!

Hello,
I'm looking for a (SAR) ADC with the following features

- This must be pseudo differential true bipolar or differential true bipolar
- SPI interface
- 16 bits
- Nice would be 1 channel
- about 10 MSPS

I can only find the LTC2328-16 (1MSPS). Unfortunately he does not have a higher MSPS.

Do you have suggestions or an alternatives ADC with higher MSPS?

best regards,

mike22

 

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  • 0
    •  Analog Employees 
    on Jun 5, 2018 2:07 AM

    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.

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  • 0
    •  Analog Employees 
    on Jun 5, 2018 2:07 AM

    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.

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