Patent classifications
H03M1/0827
Techniques for reduced noise capacitance-to-voltage converter
A continuous time single drive capacitance-to-voltage (C2V) converter can be employed for single sensor, balanced single sensor, or differential sensor. First sensor and/or second sensor can be employed to sense a condition. A capacitive bridge can comprise a first capacitive digital-to-analog-converter (DAC) and second capacitive DAC as a differential node. First capacitive DAC can be associated with first sensor, and second capacitive DAC can be associated with a third capacitive DAC, in series with first sensor, if single sensor is implemented or the second sensor if balanced single sensor or differential sensor is implemented. Capacitive bridge can be connected to differential input of a capacitive feedback amplifier that can be a continuous time amplifier with no signal sampling and no noise folding. Capacitive feedback amplifier can comprise capacitively coupled input common mode feedback, which can remove noise from a sensor drive, and output common mode feedback.
Sensor with noise mitigation
One or more computing devices, systems, and/or methods are provided. In an example of the techniques presented herein, a method is provided. The method includes generating a bias signal based on an index, connecting a first amplifier of a first programmable analog block to a sensor terminal, and amplifying a sensor signal received at the sensor terminal in the first amplifier based on the bias signal to generate an amplified sensor signal. The amplified sensor signal is sampled to generate an output sample. Responsive to detecting a limit violation associated with the output sample, the index is modified to generate a modified index and the bias signal is adjusted based on the modified index.