ADC with sample and hold

摘要

Representative implementations of devices and techniques provide analog to digital conversion of multiple parallel analog inputs. An input interface is arranged to organize the parallel analog inputs and an analog-to-digital converter (ADC) is arranged to sequentially convert the multiple parallel analog inputs to digital results.

主权项

1. A device, comprising:
a plurality of sample and hold (SH) circuits, at least one of the plurality of SH circuits arranged to receive a plurality of analog signals; a multiplexer circuit arranged to receive a plurality of outputs of the plurality of SH circuits and sequentially make the outputs available for conversion, the multiplexer to provide a serially formed signal that comprises at least one signal output from each of the plurality of SH circuits, the multiplexer to receive an initialization voltage; an analog-to-digital converter (ADC) arranged to serially convert the outputs to respective digital results, the ADC to receive the initialization voltage to cancel the initialization voltage received by the multiplexer; and a demultiplexer to receive the digital results and to provide digital output signals to multiple channels coupled to the demultiplexer.