Abstract: An apparatus includes an integrator circuit, a compensation circuit, and a sense circuit. The compensation circuit applies a positive charge and a negative charge to the integrator circuit during a first time period and a second time period respectively. The integrator circuit integrates a signal and the positive charge to produce a first sense signal. The signal is based on a charge at an electrode of a touch sensor. The integrator circuit integrates the signal and the negative charge to produce a second sense signal. The sense circuit detects a touch based on the first sense signal and the second sense signal.

Abstract: In one embodiment, an apparatus includes a first electrode, one or more processors, and one or more memory units coupled to the one or more processors. The one or more memory units collectively store logic that is configured to cause the one or more processors to control connections of the first electrode by connecting the first electrode to a first reference voltage, then connecting the first electrode to a second reference voltage lower than the first reference voltage, and then connecting the first electrode to a third reference voltage lower than the first reference voltage and the second reference voltage. The second reference voltage is coupled to a capacitor.

Abstract: In one embodiment, an apparatus includes a first electrode, one or more processors, and one or more memory units coupled to the one or more processors. The one or more memory units collectively store logic that is configured to cause the one or more processors to control connections of the first electrode by connecting the first electrode to a first reference voltage, then connecting the first electrode to a second reference voltage lower than the first reference voltage, and then connecting the first electrode to a third reference voltage lower than the first reference voltage and the second reference voltage. The second reference voltage is coupled to a capacitor.

Abstract: An apparatus includes an integrator circuit, a compensation circuit, and a sense circuit. The compensation circuit applies a positive charge and a negative charge to the integrator circuit during a first time period and a second time period respectively. The integrator circuit integrates a signal and the positive charge to produce a first sense signal. The signal is based on a charge at an electrode of a touch sensor. The integrator circuit integrates the signal and the negative charge to produce a second sense signal. The sense circuit detects a touch based on the first sense signal and the second sense signal.

Abstract: An apparatus includes an integrator circuit, a compensation circuit, and a sense circuit. The compensation circuit applies a positive charge and a negative charge to the integrator circuit during a first time period and a second time period respectively. The integrator circuit integrates a signal and the positive charge to produce a first sense signal. The signal is based on a charge at an electrode of a touch sensor. The integrator circuit integrates the signal and the negative charge to produce a second sense signal. The sense circuit detects a touch based on the first sense signal and the second sense signal.

Abstract: In one embodiment, an apparatus includes a first electrode, one or more processors, and one or more memory units coupled to the one or more processors. The one or more memory units collectively store logic that is configured to cause the one or more processors to control connections of the first electrode by connecting the first electrode to a first reference voltage, then connecting the first electrode to a second reference voltage lower than the first reference voltage, and then connecting the first electrode to a third reference voltage lower than the first reference voltage and the second reference voltage. The second reference voltage is coupled to a capacitor.

Abstract: An apparatus includes an integrator circuit, a compensation circuit, and a sense circuit. The compensation circuit applies a positive charge and a negative charge to the integrator circuit during a first time period and a second time period respectively. The integrator circuit integrates a signal and the positive charge to produce a first sense signal. The signal is based on a charge at an electrode of a touch sensor. The integrator circuit integrates the signal and the negative charge to produce a second sense signal. The sense circuit detects a touch based on the first sense signal and the second sense signal.

Abstract: In one embodiment, an apparatus includes a first electrode, one or more processors, and one or more memory units coupled to the one or more processors. The one or more memory units collectively store logic that is configured to cause the one or more processors to control connections of the first electrode by connecting the first electrode to a first reference voltage, then connecting the first electrode to a second reference voltage lower than the first reference voltage, and then connecting the first electrode to a third reference voltage lower than the first reference voltage and the second reference voltage. The second reference voltage is coupled to a capacitor.

Abstract: A method and system utilized with an analog to digital converter is disclosed. The method and system comprise providing a first conversion on an input signal. In the first conversion, an offset error is added to the input signal to provide a first result. The method and system further includes providing a second conversion on the input signal. In the second conversion, an offset error is subtracted from the input signal to provide a second result. The first and second results are then combined to substantially remove the offset error. A system and method in accordance with the present invention compensates for the accumulated offset error over many samples, thereby achieving much higher accuracy in the offset error compensation.

Abstract: A device includes a voltage regulator and/or circuitry for generating a reference voltage. The voltage regulator and the circuitry for generating the reference voltage are operable in a continuous mode or a sample mode. Operating in the sample mode can help reduce overall power consumption of the device. During the sample mode, the voltage regulator and/or the circuitry for generating the reference voltage periodically are enabled to restore energy to respective energy storage components (e.g., capacitors).

Abstract: A method and system utilized with an analog to digital converter is disclosed. The method and system comprise providing a first conversion on an input signal. In the first conversion, an offset error is added to the input signal to provide a first result. The method and system further includes providing a second conversion on the input signal. In the second conversion, an offset error is subtracted from the input signal to provide a second result. The first and second results are then combined to substantially remove the offset error. A system and method in accordance with the present invention compensates for the accumulated offset error over many samples, thereby achieving much higher accuracy in the offset error compensation.

Abstract: A method and system utilized with an analog to digital converter is disclosed. The method and system comprise providing a first conversion on an input signal. In the first conversion, an offset error is added to the input signal to provide a first result. The method and system further includes providing a second conversion on the input signal. In the second conversion, an offset error is subtracted from the input signal to provide a second result. The first and second results are then combined to substantially remove the offset error. A system and method in accordance with the present invention compensates for the accumulated offset error over many samples, thereby achieving much higher accuracy in the offset error compensation.

Abstract: A method and system utilized with an analog to digital converter is disclosed. The method and system comprise providing a first conversion on an input signal. In the first conversion, an offset error is added to the input signal to provide a first result. The method and system further includes providing a second conversion on the input signal. In the second conversion, an offset error is subtracted from the input signal to provide a second result. The first and second results are then combined to substantially remove the offset error. A system and method in accordance with the present invention compensates for the accumulated offset error over many samples, thereby achieving much higher accuracy in the offset error compensation.