Patent ID: 6229351
Filing Date: 2001-05-08
Classification: G01R

Abstract:
Current measuring arrangement comprising: an output terminal for providing an output voltage proportional to a current to be measured, a first field effect device and a second field effect device, a current sensing resistor having a first terminal and a second terminal and which passes the current to be measured, a gate electrode of the first field effect device being coupled to the first terminal of the current sensing resistor, a source electrode of the first field effect device being coupled to the second terminal of the current sensing resistor, a drain electrode of the first field effect device being coupled to a current coupling device for causing a current dependent on the drain current of the first field effect device to flow in the second field effect device, and an output coupling device for supplying to the output terminal an output voltage derived from the voltage between a gate and a source terminal of the second field effect device.