Patent ID: 11882374
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A semiconductor device comprising:
an amplifier portion;
a first conversion portion;
a second conversion portion;
an input terminal; and
a first output terminal,
wherein the amplifier portion includes a comparison circuit, a first capacitor, a second capacitor, and a first switch,
wherein the comparison circuit includes an inverting input terminal, a non-inverting input terminal, and a second output terminal,
wherein a first signal and a second signal are sequentially supplied to the input terminal,
wherein one terminal of the first capacitor is electrically connected to the input terminal,
wherein the other terminal of the first capacitor is electrically connected to the inverting input terminal,
wherein the second capacitor and the first switch are each electrically connected in parallel with the inverting input terminal and the second output terminal,
wherein in the amplifier portion, when the first signal is supplied, a first reference potential is supplied to the non-inverting input terminal, and when the second signal is supplied, a second reference potential that is different from the first reference potential is supplied to the non-inverting input terminal,
wherein the first conversion portion is configured to convert a potential output from the second output terminal into a digital value,
wherein a digital signal is supplied to the second conversion portion,
wherein the second conversion portion is configured to convert the digital signal into a third signal and output the third signal to the first output terminal,
wherein the third signal is an analog signal, and
wherein the amplifier portion, the first conversion portion, and the second conversion portion are provided over a first substrate.