Patent ID: 9446241
Filing Date: 2016-09-20
CPC Classification: A61N,H03K

Claim Text:
1. A multiple output current stimulator circuit comprising: a reference voltage source to provide a reference voltage; a plurality of input side transistors; a plurality of output side transistors current mirror coupled to respective ones of the input side transistors, the output side transistors coupled together to provide a common sensing voltage, each one of the output side transistors having a current output terminal for providing a respective output current; a supply transistor switchably coupled in cascode arrangement between each input side transistor and a predetermined voltage port; a differential amplifier comprising: a first input coupled to the reference voltage; a second input coupled to the common sensing voltage; and an output arranged to drive the supply transistor as a function of the difference between the reference voltage and the common sensing voltage; and a switching control circuit configured to selectively activate each one of the input side transistors so as to cause the corresponding current mirrored output side transistor to provide a respective output current in accordance with the corresponding input side transistor current.