Patent ID: 8638162
Filing Date: 2014-01-28
Classification: G05F

Abstract:
1. A semiconductor circuit comprising: a first current-voltage converter circuit comprising a first p-channel transistor; and a cascode current mirror circuit comprising second to ninth p-channel transistors, wherein gates of the first to fifth p-channel transistors and a drain of the first p-channel transistor are electrically connected to a third node, wherein a drain of the second p-channel transistor and gates of the sixth to ninth p-channel transistors are electrically connected to a fourth node, wherein a drain of the third p-channel transistor is electrically connected to a first node, wherein a drain of the fourth p-channel transistor is electrically connected to a second node, wherein a drain of the sixth p-channel transistor is electrically connected to a source of the second p-channel transistor, wherein a drain of the seventh p-channel transistor is electrically connected to a source of the third p-channel transistor, wherein a drain of the eighth p-channel transistor is electrically connected to a source of the fourth p-channel transistor, wherein a drain of the ninth p-channel transistor is electrically connected to a source of the fifth p-channel transistor, wherein a source of the first p-channel transistor and sources of the sixth to ninth p-channel transistors are electrically connected to a high power supply potential line, wherein the first node is electrically connected to a first input terminal of a differential amplifier, wherein the second node is electrically connected to a second input terminal of the differential amplifier, wherein an output terminal of the differential amplifier is electrically connected to a gate of a tenth transistor and a gate of an eleventh transistor, wherein a drain of the tenth transistor is electrically connected to the third node, and wherein a drain of the eleventh transistor is electrically connected to the fourth node.