Miller effect-based circuit for splitting poles
AssigneeSTMicroelectronics S.r.l.
InventorPascal Debaty
Life of this patent
Estimating the term…
Abstract
A circuit for splitting poles between a first stage and a second inverting voltage-amplifier stage of an electronic circuit, comprises, in series between the output of the first stage and the output of the second stage, and in that order, a first capacitor, a second capacitor and a resistor. The circuit further comprises a voltage-divider bridge which is connected between a terminal delivering a substantially constant voltage and the output of the first stage. The output of the voltage-divider bridge is linked to the common node between the first capacitor and the second capacitor, in such a way that a first resistor of the voltage-divider bridge is connected in parallel with the first capacitor.
Claims19
A circuit for splitting poles between a first stage and an inverting voltage-amplifier second stage of an electronic circuit, comprising:
- connected between an output of the first stage and an output of the second stage, and in order, a first capacitor, a second capacitor and a resistor;
- and
- a voltage-divider bridge connected between a terminal delivering a substantially constant voltage and the output of the first stage, the voltage-divider bridge having an output that is linked to a common node between the first capacitor and the second capacitor, in such a way that a first resistor of the voltage-divider bridge is connected in parallel with the first capacitor.
An electronic circuit comprising a first stage and a second inverting voltage-amplifier stage having respective outputs that are linked by a circuit for splitting poles, the circuit for splitting poles comprising:
- connected between an output of the first stage and an output of the second stage, and in order, a first capacitor, a second capacitor and a resistor;
- and
- a voltage-divider bridge connected between a terminal delivering a substantially constant voltage and the output of the first stage, the voltage-divider bridge having an output that is linked to a common node between the first capacitor and the second capacitor, in such a way that a first resistor of the voltage-divider bridge is connected in parallel with the first capacitor.
An electronic system comprising
- a first stage having a first output;
- a second inverting voltage-amplifier stage having a second output;
- and
- a circuit for splitting poles linking the first and second outputs, the circuit for splitting poles comprising:
- a first resistor having a first terminal connected to the first ouput of the first stage and a second terminal linked to a constant voltage supply;
- a first capacitor having a first terminal connected to the first terminal of the first resistor and a second terminal connected to the second terminal of the first resistor;
- and
- a second capacitor having a first terminal connected to the second terminal of the first capacitor and a second terminal being linked to the second output of the second stage.
Dependencies are inferred from the claim text.