Sensor with noise mitigation

A sensing system, comprising:

• a first sensor terminal;
• a second sensor terminal;
• a digital-to-analog converter (DAC) configured to generate a bias signal based on an index;
• a multiplexer connected to the first sensor terminal or the second sensor terminal and configured to generate a sensor output;
• a first programmable analog block having a first amplifier connected to the sensor output and configured to amplify a sensor signal received at the sensor output based on the bias signal to generate an amplified sensor signal;
• an analog-to-digital converter (ADC) configured to sample the amplified sensor signal to generate an output sample;
• and
• a controller configured to:
• configure the multiplexer to select one of the first sensor terminal or the second sensor terminal;
• configure the first amplifier based on the configuration of the multiplexer;
• and
• responsive to detecting a limit violation associated with the output sample, modify the index to generate a modified index, wherein:
• the DAC is configured to adjust the bias signal based on the modified index.

A method, comprising:

• generating an analog bias signal based on an index;
• connecting a first amplifier of a first programmable analog block to a sensor terminal;
• amplifying a sensor signal received at the sensor terminal in the first amplifier based on the analog bias signal to generate an amplified sensor signal;
• sampling the amplified sensor signal in an analog-to-digital converter (ADC) to generate an output sample;
• responsive to detecting a limit violation associated with the output sample and an operating range of the ADC, modifying the index to generate a modified index;
• and adjusting the analog bias signal based on the modified index.