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ADS4222: Recommendation for input drive circuit

vishak udayakumar
Prodigy 120 points
Part Number: ADS4222
Other Parts Discussed in Thread: THS4509,

Hi,

I want to use ADS4222 for digitizing sensor signal which ranges from 0.9V to 1.8V.

The sensor can drive load of 1K and above. The bandwidth of the input signal is from DC upto 20 MHz.

Please suggest an input drive circuit for the above application.

  • 0
    TI__Guru* 91947 points

    Vishak,

    Attached is the schematic of the TI ADS4222EVM which has an option to drive the ADC with a THS4509 fully differential amplifier. This will allow an input from DC to 1900MHz to be used with this ADC, while providing the required common voltage for the analog input. You may want to contact the High Speed Amplifier group for other examples as well.

    Regards,

    Jim

    1643.ADS42XX_58C28EVM-SCH_C.pdf