Patent ID: 8797025
Filing Date: 2014-08-05
Classification: G01R

Abstract:
1. A source-measure unit (SMU) comprising: output terminals configured to couple the SMU to a device under test (DUT), and further configured to convey an analog output signal to the DUT to effect: an output current flowing into the DUT; and an output voltage in the DUT; a first converter configured to generate a first digital value representative of the output current; a second converter configured to generate a second digital value representative of the output voltage; and a digital loop controller configured to receive the first digital value and the second digital value, and generate a digital control signal based on the first digital value and the second digital value to regulate a specified function of the output current and the output voltage to remain at a value corresponding to a setpoint, wherein the digital loop controller comprises: an integrating function selectively associated with regulation of the output current and regulation of the output voltage; and a compensating function configured to stabilize the analog output signal according to user programmable values corresponding to one or more compensation poles and zeros.