Multi-input data converters using code modulation

A method for multiplexing inputs in an analog-to-digital converter, the method comprising:

• coding, in respective parallel signal paths, respective input signals using respective code sequences;
• multiplexing coded input signals through charge redistribution of parallel sampling capacitors in the parallel signal paths;
• and
• converting, by a quantizer, a multiplexed coded input signal into a digital output signal.

A multiple-input multiple-output analog-to-digital converter, comprising:

• parallel channels to sample respective input signals and code the respective input signals;
• a common node to multiplex coded input signals through charge redistribution of sampling capacitors in the parallel channels;
• an analog-to-digital converter to convert a multiplexed coded signal into a digital output signal;
• and
• parallel demultiplexers to demultiplex the digital output signal.