CALIBRATION OF MULTIPLE ANALOG FRONT-ENDS

Methods and associated processing systems are disclosed for acquiring gain mismatch values and offset mismatch values corresponding to a plurality of analog-to-digital converters (ADCs). One method comprises coupling receiver circuitry of a processing system with a capacitive sensor comprising a plurality of sensor electrodes, the receiver circuitry comprising a plurality of ADCs, each ADC of theplurality of ADCs coupled with one or more respective sensor electrodes of the plurality of sensor electrodes. The method further comprises, while at least a portion of transmitter circuitry of the processing system is disabled, acquiring measurements using each ADC of the plurality of ADCs; and storing, using the acquired measurements, a plurality of offset mismatch values in a memory of the processing system. The processing system is operable to apply the plurality of offset mismatch values to capacitive measurements acquired using the plurality of ADCs. 公开了用于获取对应于多个模数转换器(ADC)的增益失配值和偏移失配值的方法以及关联的处理系统。种方法包括将处理系统的接收器电