Monolithic bandpass RC-CR filter for high energy physics experiments

Abstract

A monolithic implementation of a bandpass filter featuring equal (low and high) coupling time constants (RC-CR filter) of 20 ns is proposed. The circuit satisfies the requirements of the forthcoming high energy physics experiments at the CERN laboratory: high speed, large dynamic range, low power consumption and 50 Ω coaxial cable driving capability. Moreover optimised noise performance is obtained. The design exploiting the repetitive use of a very simple cell with high open loop gain and large frequency bandwidth allows an analogue sum to be efficiently obtained.