The output signal from the LT6600-10 differential driver is sent to an ADC = LTC1475-12. This ADC component makes an oversampling (x12) of the signal which is sent towards a FPGA (with décimator filter ..).
- The datasheet indicates that the filter is flat in the passband (the Amplitude Response curve for 5V is flat, and passband gain curve also).
- The datasheet (ELECTRICAL CHARACTERISTICS) also indicates an ripple (0.5dB for 0-260 kHz, 1dB for 260kHz-8MHz, 1.7dB for 260kHz-10MHz). Normally this information is the good one !