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Low voltage ultra-low power continuous time reverse bandgap reference circuit

  • US 10,642,304 B1
  • Filed: 11/05/2018
  • Issued: 05/05/2020
  • Est. Priority Date: 11/05/2018
  • Status: Active Grant
First Claim
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1. A bandgap voltage circuit, comprising:

  • a first circuit coupled between a supply node and a reference node, the first circuit including;

    a self-cascoded transistor circuit connected between a first input node and a first feedback node,a resistor connected between the first feedback node and the reference node, andan output node connected to the self-cascoded transistor circuit;

    a regulator circuit, including;

    a first regulator transistor connected between the supply node and the first input node,a second regulator transistor connected between the supply node and a second input node, andan amplifier, including;

    a non-inverting input terminal connected to the first feedback node,an inverting input terminal connected to a second feedback node, andan amplifier output terminal connected to control terminals of the first and second regulator transistors; and

    a second circuit, including;

    a transistor connected between the second input node and the reference node, the transistor including a control terminal connected to the second input node, anda scaling circuit, including a first resistor connected between the second input node and the second feedback node, and a second resistor connected between the second feedback node and the reference node.

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