Patent ID: 7834607
Filing Date: 2010-11-16
Classification: G11C

Abstract:
1. A semiconductor testing device comprising a voltage generator with current limiting for feeding a desired load voltage to a device to be tested, the device being a load of which load current is limited to a predetermined value or less, wherein the voltage generator with current limiting comprises: an operational amplifier for receiving a voltage signal corresponding to the load voltage by a non-inverting input terminal through an input resistance and feeding a predetermined load voltage to the load; an output resistance connected between an output terminal of the operational amplifier and one end of the load, the output resistance having a fixed or an externally variable resistance value; a feedback resistor connected between one end of the load and an inverting input terminal of the operational amplifier; a first clamper connected between the output terminal of the operational amplifier and the inverting input terminal of the operational amplifier, the first clamper having a pre-set or an externally variable clamp voltage; and a second clamper connected between one end of the load and the non-inverting input terminal of the operational amplifier.