DocumentCode :
890976
Title :
A programmable transversal filter for voice-frequency applications
Author :
Sunter, Stephen K. ; Girczyc, Emil F. ; Chowaniec, Adam
Volume :
16
Issue :
4
fYear :
1981
Firstpage :
367
Lastpage :
372
Abstract :
A fully integrated, programmable transversal filter optimized for low-noise, low-power, voice-frequency applications is described. The filter, fabricated with a standard double-poly NMOS process, achieves convolution of an analog input signal with digital tap weightings using a structure with sample-and-hold gates for analog storage and a multiplexed MDAC for multiplication. The design of the filter eliminates fixed pattern noise usually associated with such structures and enables a dynamic range in excess of 70 dB (LPF, f/SUB o//f/SUB s/=0.08) to be achieved at an 8 kHz sampling rate with a power dissipation of less than 80 mW. This area efficient device forms the basis for a range of possible voice-band signal processing functions.
Keywords :
Active filters; Field effect integrated circuits; Signal processing; Telephone equipment; Voice communication; active filters; field effect integrated circuits; signal processing; telephone equipment; voice communication; Clocks; Communication system control; Control systems; Dynamic range; Large scale integration; MOS devices; Signal processing; Telegraphy; Telephony; Transversal filters;
fLanguage :
English
Journal_Title :
Solid-State Circuits, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9200
Type :
jour
DOI :
10.1109/JSSC.1981.1051602
Filename :
1051602
Link To Document :
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