I have read the datasheet of AD7403, but it does offer the information about the input signal frequency range.
AD7403 is specified at 1Khz input voltage. May I know what specific signal frequency you want to operate? We have a Virtual Eval on ADI site that may help you evaluate and understand the performance of the AD7403 with any signal frequency or configurations and settings you want. We also have a downloadable simulation tools on the AD7403 product page that may help you. Please refer to the link below.
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