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THS4509: How to design the relative circuit as an 100OHM input-impedance ADC driver

Part Number: THS4509
Other Parts Discussed in Thread: ADS52J90, ADS5500

Hi TI,

I want to use THS4509 as my ADC input driver.

I find one example from the EVM design of "ADS52J90"(website: ADS52J90EVM Evaluation board | But this ADC chip's input impedance is 50 OHM.

The ideal input impedance of my ADC is 100 OHM. So how should I design the front end circuit for my ADC input.

Best Regards,