Patent ID: 6032171
Filing Date: 2000-02-29
Classification: H03H

Abstract:
An FIR filter having an output, comprising:a plurality of multipliers, each of said multipliers including an output and a first multiplier input and a second multiplier input, each said first multiplier input receiving a coefficient signal representing an FIR coefficient;a master sample and hold circuit including a master output and operable to sample a first input signal and hold the value of said first input signal on said master output for a first predetermined period of time;a plurality of slave sample and hold circuits, each of said plurality of slave sample and hold circuits comprising a first slave input directly connected to said master output and a first slave output and operable to sample a master signal from said master output and hold the value of said master signal on said first slave output for a second predetermined period of time;a plurality of multiplexers, each comprising a plurality of multiplexer inputs and a second output, ones of said second outputs each coupled to one of said second multiplier inputs, at least one of said plurality of multiplexer inputs of a first predetermined number of multiplexers coupled to a first output of a first one of said slave circuits; andwherein the output of each of said multipliers is summed so as to form said output of said FIR filter.