This chapter reviews some recent design developments in Analog-Sampled-Data Signal Processing (ASD SP). Following a brief review of the state-of-the-art in switched capacitor (SC) signal processing, the “current mode” switched-current (SI/S²I) technique is presented. New techniques for exploring niches in low voltage, low current, tuneable systems or very high speed BiCMOS and GaAs circuits are introduced with reference to current work, and some design suggestions are given for further circuit implementations. The S²I technique is maturing quickly offering a potential cost/performance advantage for single-chip mixed mode systems implemented in standard digital ULSI/VLSI technologies.

Inspec keywords: ULSI; mixed analogue-digital integrated circuits; switched current circuits; integrated circuit design; BiCMOS integrated circuits; signal processing; switched capacitor networks; current-mode circuits; gallium arsenide; VLSI

Other keywords: switched capacitor signal processing; GaAs circuits; current mode switched-current technique; tuneable systems; circuit implementations; very-high speed BiCMOS circuits; single-chip mixed mode systems; ASD SP; SC signal processing; analog sampled-data signal processing; S²I techniques; standard digital ULSI-VLSI technologies

Subjects: Signal processing and detection