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We present the first fully-integrated microchip implementation of a patch-clamp measurement system featuring both current clamp and voltage clamp modes with gain control, leak correction, series access resistance compensation, parasitic capacitive compensation capability, and input and output filters. The system was implemented in a 1-poly, 3-metal, 0.5 µm Siliconon-Sapphire process. In voltage clamp...
A 170μW readout IC for a capacitive MEMS acceleration sensor was implemented in a 1.5V 0.13μm CMOS for high-end medical motion sensing applications. The accelerometer achieves a 45μg/vHz noise floor and a dynamic range larger than 87dB for a 400Hz bandwidth. Power reduction is achieved by introducing reset and common-mode feedback circuit techniques based on a non-unity-gain feedback configuration.
This work presents a new systematic approach to design impedance measurement systems for living cell detection and monitoring. The hardware of the system was implemented in PCBs as a proof-of-concept. A DAC channel generates the required excitation signals to be applied onto the living cell and the current flowing through the cell is converted into voltage and digitized by an ADC channel. An FPGA...
A new sensitivity controllable pixel structure is proposed for CMOS active-pixel image sensor. The proposed pixel structure has a sensitivity control gate overlaid on the photodiode. The sensitivity of the pixel is controlled by the bias voltage of the control gate that forms a variable accumulation-mode MOS capacitor. The prototype sensor is fabricated with a 0.35-mum CMOS process and consists of...
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