论文信息 - Low-power switched-capacitor filters using charge transfer integrators

Low-power switched-capacitor filters using charge transfer integrators

Charge transfer amplifiers (CTAs) are based on the charge transfer mechanism of a MOS source follower. Here, new switched-capacitor (SC) filter architectures based on charge transfer amplifiers and integrators are presented. To demonstrate the new CTA SC filters, first-order and second-order lowpass and second-order bandpass filters are designed and simulated using minimum-geometry CMOS devices in the IBM6HP 0.25 /spl mu/m CMOS process. Simulations of first- and second-order lowpass and second-order bandpass filters show very low total power dissipation: of 1.9, 4.0, and 6.1 /spl mu/W for 500 kHz clock frequency and 0.20, 0.46, and 0.66 /spl mu/W for 50 kHz clock frequency.

Inchang Seo | Robert M. Fox

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