Band Gap Reference Circuit
First Claim
1. A band gap reference circuit, comprising:
- a first branch comprising a first transistor element and a first temperature dependant resistive element;
a second branch comprising a second transistor element having a size different from the first transistor element;
an output branch comprising an second temperature dependant resistive element, said second temperature dependant resistive element being coupled to an output terminal; and
a control element coupled to the first and second branch to control a current through the first and second branches;
wherein each of the first and second temperature dependant resistive elements, comprise a transistor being arranged in a current path of the respective branch and being controlled such that it operates in its linear region of its characteristics.
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Accused Products
Abstract
A band gap reference circuit comprises a first branch (1) having a first transistor (Q1) and a first temperature-dependent resistive element (S0). A second branch of the band gap reference comprises a second transistor (Q2) having a different size compared to the first transistor (Q1). An output branch (3) comprises a second temperature-dependent resistive element (S1, S2), that second temperature-dependent resistive element being coupled to an output terminal (Vref). At least one of the first and second temperature-dependent resistive elements (S0, S1, S2) comprises a transistor (M2) being arranged in a current path of the respective branch (1, 3) and being controlled such that it operates in a linear region of its characteristics.
15 Citations
14 Claims
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1. A band gap reference circuit, comprising:
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a first branch comprising a first transistor element and a first temperature dependant resistive element; a second branch comprising a second transistor element having a size different from the first transistor element; an output branch comprising an second temperature dependant resistive element, said second temperature dependant resistive element being coupled to an output terminal; and a control element coupled to the first and second branch to control a current through the first and second branches; wherein each of the first and second temperature dependant resistive elements, comprise a transistor being arranged in a current path of the respective branch and being controlled such that it operates in its linear region of its characteristics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification