Patent attributes
There is provided a test apparatus including a driver that outputs a test signal to a device under test, a first switch that switches whether to connect the driver to the device under test, a comparator that receives an output signal from the device under test via the first switch, and compares a voltage of the output signal with a predetermined reference voltage, a reference voltage input section that inputs the reference voltage into the comparator, a second switch that is provided between the reference voltage input section and the comparator, and a dummy resistance that is connected at one end thereof to a connection point between the comparator and the second switch and at the other end thereof to a predetermined potential. Here, a resistance ratio between an output resistance of the driver and an on-resistance of the first switch is substantially equal to a resistance ratio between the dummy resistance and an on-resistance of the second switch.
