A fully differential CMOS integrated 4th order reconfigurable GM-C lowpass filter for mobile communication
نویسندگان
چکیده
A fully re-configurable channel select filter is presented which is used as a part of a multi mode direct conversion receiver. The filter supports different modes including GSM, IS-95, and UMTS. A 4 order Butterworth filter is realized in a gmC filter topology. The filter circuit is implemented in a standard 0.35 μm CMOS process. The filter is able to handle large input signals up to 600mVpp at a supply voltage of 2.7V. The circuit has a low current consumption of 620μA, whereas the needed die size is only 530×520 μm.
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