View lt10647 datasheet:

LTC1064-7 Linear Phase, 8th Order Lowpass Filter DESCRIPTIO FEATURES Steeper Roll-Off Than 8th Order Bessel Filters The LTC1064-7 is a clock-tunable monolithic 8th order fCUTOFF up to 100kHz lowpass filter with linear passband phase and flat group Phase Equalized Filter in 14-Pin Package delay. The amplitude response approximates a maximally Phase and Group Delay Response Fully Tested flat passband whilte it exhibits steeper roll-off than an Transient Response Exhibits 5% Overshoot and equivalent 8th order Bessel filter. For instance, at twice the No Ringing cutoff frequency the filter attains 34dB attenuation (vs Wide Dynamic Range 12dB for Bessel), while at three times the cutoff frequency 72dB THD or Better Throughout a 50kHz Passband the filter attains 68dB attenuation (vs