Touch sensor compensation circuit

A device comprising:

• a touch sensor array;
• an integrator circuit;
• a compensation circuit distinct from and coupled to the integrator circuit, the compensation circuit comprising:
• a driver;
• a resistor coupled in series with the driver;
• a capacitor coupled in series with the resistor;
• and
• a demultiplexer coupled in series with the capacitor,
• the driver operable to:
• drive, during a first time period, a positive charge through the resistor, capacitor, and demultiplexer to the integrator circuit, the integrator circuit operable to integrate a signal and the positive charge to produce a first sense signal, the signal based on a charge at an electrode of the touch sensor array;
• and
• drive, during a second time period, a negative charge through the resistor, capacitor, and demultiplexer to the integrator circuit, the integrator circuit further operable to integrate the signal and the negative charge to produce a second sense signal;
• and
• a sense circuit operable to detect a touch based on the first sense signal and the second sense signal.