Abstract: This work presents a new voltage-controlled-oscillator (VCO)-based sensor readout chip for sub-millivolt signal sensing applications. The proposed sensor front-end utilizes a new multi-path ...

4 provides the schematic. In both diagrams, the sensor’s output signal pin is connected to A0 pin of the Arduino board. VCC and GND pins of the sensor are connected to the Arduino’s 5V and GND pins, ...