Semiconductor device and electronic device

A semiconductor device comprising:

• a first circuit;
• a second circuit;
• a third circuit;
• and
• a sense amplifier,
• wherein the first circuit comprises a current source and a first switch,
• wherein the second circuit comprises a first transistor and a first capacitor,
• wherein the third circuit comprises a second transistor,
• wherein a first terminal of the first transistor is electrically connected to a control terminal of the first switch through the sense amplifier,
• wherein a second terminal of the first transistor is electrically connected to a first terminal of the first capacitor,
• wherein a first terminal of the first switch is electrically connected to an output terminal of the current source, and
• wherein a second terminal of the first switch is electrically connected to a first terminal of the second transistor.

A semiconductor device comprising:

• a first circuit;
• a second circuit;
• and
• a third circuit;
• wherein the first circuit comprises a current source and a first switch,
• wherein the second circuit comprises a first transistor, a third transistor, and a first capacitor,
• wherein the third circuit comprises a second transistor,
• wherein a first terminal of the first transistor is electrically connected to a control terminal of the first switch,
• wherein a first terminal of the third transistor is electrically connected to a first terminal of the first capacitor and a gate of the first transistor,
• wherein a first terminal of the first switch is electrically connected to an output terminal of the current source, and
• wherein a second terminal of the first switch is electrically connected to a first terminal of the second transistor.

A semiconductor device, comprising:

• a first circuit;
• and
• a fifth circuit,
• wherein the first circuit comprises a first current source, a second current source, a first switch, a fifth transistor, and a sixth transistor,
• wherein the fifth circuit comprises a seventh transistor, an eighth transistor, a second capacitor, a second switch, a third switch, and a current comparison circuit,
• wherein an output terminal of the first current source is electrically connected to a first terminal of the first switch,
• wherein an output terminal of the second current source is electrically connected to a gate of the fifth transistor, a gate of the sixth transistor, and a first terminal of the sixth transistor,
• wherein a first terminal of the seventh transistor is electrically connected to a first terminal of the eighth transistor, a first terminal of the second switch, and a first terminal of the third switch,
• wherein a gate of the seventh transistor is electrically connected to a second terminal of the eighth transistor and a first terminal of the second capacitor,
• wherein a second terminal of the first switch is electrically connected to a second terminal of the second switch,
• wherein a first terminal of the current comparison circuit is electrically connected to a second terminal of the third switch, and
• wherein a second terminal of the current comparison circuit is electrically connected to a first terminal of the fifth transistor.

A semiconductor device comprising:

• a first circuit;
• and
• a fifth circuit,
• wherein the first circuit comprises a first current source, a third current source, a first switch, and a fourth switch,
• wherein the fifth circuit comprises a seventh transistor, an eighth transistor, a second capacitor, a second switch, a third switch, a fifth switch, and a current comparison circuit,
• wherein an output terminal of the first current source is electrically connected to a first terminal of the first switch,
• wherein an input terminal of the third current source is electrically connected to a first terminal of the fourth switch,
• wherein a first terminal of the seventh transistor is electrically connected to a first terminal of the eighth transistor, a first terminal of the second switch, and a first terminal of the third switch,
• wherein a gate of the seventh transistor is electrically connected to a second terminal of the eighth transistor and a first terminal of the second capacitor,
• wherein a second terminal of the first switch is electrically connected to a second terminal of the second switch,
• wherein a second terminal of the fourth switch is electrically connected to a first terminal of the fifth switch,
• wherein a first terminal of the current comparison circuit is electrically connected to a second terminal of the third switch, and
• wherein a second terminal of the current comparison circuit is electrically connected to a second terminal of the fifth switch.