Title :
An 8 MHz, 80 Ms/s switched-current filter
Author :
Hughes, J.B. ; Moulding, K.W.
Author_Institution :
Philips Res. Lab., Redhill, UK
Abstract :
Since its introduction in 1989, the switched-current (SI) technique for sampled-data signal processing has claimed the advantage over switched-capacitors of needing only digital CMOS processing, making it cheaper and more amenable to mixed-signal ICs. Attempts to raise the performance to match that of switched-capacitors has had mixed success, and some silicon implementations have been reported. A recent advance, called S/sup 2/I, promises the highest overall performance yet. This paper demonstrates that switched current filters can not only compete with switched-capacitors and use simpler IC processing but also perform well with sampling frequencies of at least 80 MHz.<>
Keywords :
CMOS integrated circuits; active filters; mixed analogue-digital integrated circuits; switched filters; 8 MHz; 80 MHz; IC processing; S/sup 2/I technology; cut-off frequency; mixed-signal ICs; sampled-data signal processing; sampling frequencies; switched-current filter; Attenuation; CMOS digital integrated circuits; CMOS technology; Circuits and systems; Cutoff frequency; Filters; Performance gain; Sampling methods; Signal processing; Switching circuits;
Conference_Titel :
Solid-State Circuits Conference, 1994. Digest of Technical Papers. 41st ISSCC., 1994 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-1844-7
DOI :
10.1109/ISSCC.1994.344726
