A CMOS Gm-C State-Space 1MHz Low-Pass Active Filter
نویسنده
چکیده
In this paper are presented a CMOS Gm-C state-space active filter for high frequencies, in the 1μm CMOS process, synthesised using the intermediate transfer function method. The Gm transconductor has a good linearity (1% relative error for 2Vp-p input signals with a 5V power supply) and high DC gain (≥40dB), combined with a large band to avoid errors in the filter characteristic. By using the intermediate transfer functions method, the active filter performances as sensitivity and dynamic range (noise) are optimised. The 1 MHz low-pass filter has the dynamic range grater than 70db and the total harmonic distortion lower than –60 dB. Key-Words: synthesis, active filters, intermediate transfer function synthesis method
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