Title :
LSI implementation of a programmable FIR digital filter
Author :
Kadowaki, Yukio ; Matsuoka, Shigeki ; Nakamura, Shogo
Author_Institution :
Ricoh Co. Ltd., Osaka, Japan
Abstract :
The implementation of a programmable FIR (finite impulse response) digital filter based on a generalized transversal filter structure consisting of tapped, cascaded, identical FIR subfilters is presented. The LSI chip includes 56 different filters. One of the desired filters can be selected by six external ins on the LSI. The specifications of each filter are as follows: (1) the passband ripple is less than 0.5 dB; (2) the attenuation in the stopband is more than 50 dB; and (3) the normalized transition band is less than 0.1. A maximum sampling rate of 1.11 MHz is realized by virtue of the parallel processing of the subfilters. The 5.0×5.5 mm2 chip was fabricated using 1.5-μm double-level-metal CMOS technology
Keywords :
CMOS integrated circuits; digital filters; large scale integration; 1.11 MHz; 1.5 micron; CMOS; LSI; attenuation; double-level-metal; finite impulse response; implementation; normalized transition band; passband ripple; programmable FIR digital filter; transversal filter; Attenuation; Band pass filters; CMOS technology; Digital filters; Finite impulse response filter; Large scale integration; Parallel processing; Passband; Sampling methods; Transversal filters;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266664
