chapter  11
32 Pages

Continuous-Time Filters

Modern Very Large Scale Integrated (VLSI) circuits realize complex mixed analog-digital systems on a monolithic semiconductor chip. These systems generally incorporate signal processing operations that can be performed either in the digital domain using digital signal processing (DSP) techniques or in the analog domain with analog signal processing (ASP) circuits. ASP techniques fall into two basic categories: continuous-time or sampled-data. The selection of DSP, continuous-time ASP, or sampled-data ASP approaches is highly dependent on the system requirements; however, continuous-time filters are generally preferable in applications that require low power, high-frequency operation, and moderate dynamic range.