A Discrete-Time Downsampling FIR Filter for Windowed Integration Samplers

Table 2

Summary of simulation results.

Specification	Conventional Filter	Proposed Filter
Null attenuation for 20 MHz	41.55 dB	38.26 dB
Integrated Output Noise (0–20 MHz)	25.02 nV^2	25.66 nV^2
THD (1mV sine, 20 MHz)	0.972%	0.972%
Overall Capacitor for sampling	8 pF	6 pF