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This paper proposes a low power MICS band receiver channel selection filter on 65 nm CMOS for implantable biomedical devices. This 5th-order elliptic OTA-C bandpass filter utilizes sub-threshold inverter based OTAs. In order to broaden input range of the filter, the first OTA stage is linearized by using the active-error feedforward technique. The overall filter only consumes 300 μA DC current under...
This paper presents a super low power MICS band receiver front-end down converter on 65 nm CMOS for implantable biomedical devices. This down converter, including a LNA and a quadrature mixer, only consumes 500 µA DC current under 1 V supply. With a small LO swing of 300 mV, it provides a voltage conversion gain of 35 dB and a noise figure of 7.4 dB, while a −20 dBm IIP3 is obtained. In order to achieve...
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