Reducing MOSFET 1/f Noise and Power Consumption by 'switched biasing'


Gierkink, Sander L.J. and Klumperink, Eric A.M. and Tuijl, Ed van and Nauta, Bram (1999) Reducing MOSFET 1/f Noise and Power Consumption by 'switched biasing'. In: 25th European Solid-State Circuits Conference, ESSCIRC '99, 21-23 Sept. 1999, Duisburg, Germany (pp. pp. 154-157).

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Abstract:"Switched Biasing" is proposed as a new circuit technique that exploits an intriguing physical effect: cycling a MOS transistor between strong inversion and accumulation reduces its intrinsic 1/f noise. The technique is implemented in a 0.8µm CMOS sawtooth oscillator by periodically off-switching of the bias currents during time intervals that they are not contributing to the circuit operation. Measurements show a reduction of the 1/f noise induced phase noise by more than 8 dB, while the power consumption is reduced by more than 30% as well.
Item Type:Conference or Workshop Item
Copyright:©1999 IEEE
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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