Current reference operative drive-sense circuit (DSC) with voltage amplifier

Abstract: a current reference operative drive-sense circuit (dsc) includes a current source operably coupled to a load and a voltage-mode analog to digital converter (adc). when enabled, the current source is configured to drive a sinusoidal current reference signal to the load thereby generating a load voltage that is based on the sinusoidal current reference signal and an impedance of the load. the voltage-mode adc is operably coupled the load and to the current source. when enabled, the voltage-mode adc configured to perform digital sampling of the load voltage and to generate a digital signal that is representative of the load voltage. in some implementations, one or more processing modules is configured to execute operational instructions to process the digital signal that is representative of the load voltage in accordance with determining impedance of the load and/or change of impedance of the load.

Inventor(s): Patrick Troy Gray, Daniel Keith Van Ostrand, Richard Stuart Seger, JR., Phuong Huynh

CPC Classification: G06F3/04166 ({Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally )})

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