Frequency-voltage conversion circuit, semiconductor device, and memory system
AssigneeKioxia Corporation
InventorHiroo Yabe
Life of this patent
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Abstract
A frequency-voltage conversion circuit includes a constant current source, a first switch connected to an output of the constant current source, a first capacitor connected between the first switch and ground, a second switch connected between a first node that is between the first switch and the first capacitor, and an output node, a third switch connected between the first node and the ground, a fourth switch connected to the output of the constant current source, a second capacitor connected between the fourth switch and the ground, a fifth switch connected between a second node that is between the fourth switch and the second capacitor, and the output node, and a sixth switch connected between the second node and the ground.
Claims20
A frequency-voltage conversion circuit comprising:
- a constant current source;
- a first switch connected to an output of the constant current source;
- a first capacitor connected between the first switch and ground;
- a second switch connected between a first node that is between the first switch and the first capacitor, and an output node;
- a third switch connected between the first node and the ground;
- a fourth switch connected to the output of the constant current source;
- a second capacitor connected between the fourth switch and the ground;
- a fifth switch connected between a second node that is between the fourth switch and the second capacitor, and the output node;
- and
- a sixth switch connected between the second node and the ground.
A semiconductor device comprising:
- a frequency-voltage conversion circuit;
- and
- an oscillator circuit configured to generate a clock having a predetermined frequency according to an output voltage output from the frequency-voltage conversion circuit,
- wherein the frequency-voltage conversion circuit includes:
- a constant current source;
- a first switch connected to an output of the constant current source;
- a first capacitor connected between the first switch and ground;
- a second switch connected between a first node that is between the first switch and the first capacitor, and an output node;
- a third switch connected between the first node and the ground;
- a fourth switch connected to the output of the constant current source;
- a second capacitor connected between the fourth switch and the ground;
- a fifth switch connected between a second node that is between the fourth switch and the second capacitor, and the output node;
- and
- a sixth switch connected between the second node and the ground.
Dependencies are inferred from the claim text.