Patent ID: 6127847
Filing Date: 2000-10-03
Classification: H03K

Abstract:
A high-speed bipolar-to-CMOS logic converter circuit, comprising an input stage, including a differential amplifier supplied by a first supply voltage, and an output stage, which is supplied by a voltage of a CMOS-logic circuit portion, wherein a dynamic level shifting circuit is coupled between said input stage and said output stage, said output stage being connected to the CMOS-logic circuit portion;said input stage including at least one input terminal and an output terminal, said differential amplifier including a first transistor and a second transistor, which are coupled-emitter connected, the output terminal of said input stage coupled to said dynamic level shifting circuit, said output stage including a first output transistor and an output resistor series-connected and for receiving a signal from the dynamic level shifting circuit, said output stage further including a second output transistor which is connected to a voltage regulator and constitutes, with said first output transistor, said output resistor and said dynamic level shifting circuit, a feedback loop for the output voltage of the converter circuit.