A read-out circuitry for acquiring a multi-channel biopotential signal and a sensor for sensing a biopotential signal Interuniversity Microelectronics Centre
A read-out circuitry for acquiring a multi-channel biopotential signal, comprises: a plurality of read-out signal channels (120a-c; 220a-c; 320a-c; 420a-c), each receiving an input signal from a unique signal electrode (102); a reference channel (130; 230; 330; 430) receiving a reference signal from a reference electrode (102); wherein each read-out signal channel (120a-c; 220a-c; 320a-c; 420a-c) and the reference channel (130; 230; 330; 430) comprises a channel amplifier connected to receive the input signal in a first input node and with an output node connected to a second input node via a ...