Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
244 words
An electronic circuit comprising six transistors each having a control electrode and first and second controlled current electrodes, a first and a second transistor being connected as a first differential pair with their control electrodes connected to input terminals of the circuit, the first controlled current electrode of each of the first and second transistors connected to a first reference potential level and the second controlled current electrodes of the two transistors connected together, a third transistor being connected as a current source drawing a first constant current and having its first controlled current electrode connected to the second controlled current electrodes of the first and second transistors and its second controlled current electrode connected to a second reference potential level, a fourth and a fifth transistor being connected as a second differential pair with their first controlled current electrodes connected to the first controlled current electrodes of the first and second transistors respectively, the control electrodes of the fourth and fifth transistors connected to the control electrodes of the second and first transistors respectively and the second controlled current electrodes of the fourth and fifth transistors connected together, and the sixth transistor being connected as a current source drawing a second constant current, substantially smaller than the first constant current, and having its first controlled current electrode connected to the second controlled current electrodes of the fourth and fifth transistors and its second controlled current electrode connected to the second reference potential level.
Claim 2
Dependent Claim
244 words
An electronic circuit comprising six transistors each having a control electrode and first and second controlled current electrodes, a first and a second transistor being connected as a first differential pair with their control electrodes connected to input terminals of the circuit, the first controlled current electrode of each of the first and second transistors connected to a first reference potential level and the second controlled current electrodes of the two transistors connected together, a third transistor being connected as a current source drawing a first constant current and having its first controlled current electrode connected to the second controlled current electrodes of the first and second transistors and its second controlled current electrode connected to a second reference potential level, a fourth and a fifth transistor being connected as a second differential pair with their first controlled current electrodes connected to the first controlled current electrodes of the first and second transistors respectively, the control electrodes of the fourth and fifth transistors connected to the control electrodes of the second and first transistors respectively and the second controlled current electrodes of the fourth and fifth transistors connected together, and the sixth transistor being connected as a current source drawing a second constant current, substantially smaller than the first constant current, and having its first controlled current electrode connected to the second controlled current electrodes of the fourth and fifth transistors and its second controlled current electrode connected to the second reference potential level.
Claim 3
Dependent Claim
49 words
A circuit according to claim 1, wherein each of the six transistors is a bipolar transia- tor, the control electrode being the base of the transistor, the first controlled current electrode being the collector of the transistor and the second controlled current electrode being the emitter of the transistor.
Claim 4
Dependent Claim
38 words
A circuit according to claim 1, wherein the parasitic capacitance associated with the junctions between the control electrode and the first controlled current electrode of each of the first, second, fourth and fifth transistors is substantially the same.
Claim 5
Dependent Claim
21 words
A circuit according to claim 3, having an output terminal connected to the first controlled current electrode of the first transistor.
Claim 6
Dependent Claim
30 words
A circuit according to claim 1, further comprising a differential output circuit having two input terminals connected to the first controlled current electrodes of the first and second transistors respectively.
Claim 7
Dependent Claim
29 words
A circuit according to claim 5, wherein the parasitic capacitance associated with the first controlled current electrode of each of the third and sixth transistors is substantially the same.