According to an embodiment, a sample-hold circuit according to this embodiment is made up of a first device having a first withstand voltage and a second device having a second withstand voltage lower than the first withstand voltage. The sample-hold circuit includes a first switch element, a first capacitor, a second switch element, a third switch element, and a fourth switch element. The first switch element has the first withstand voltage. The first switch element operates upon receiving a first signal output from the device having the first withstand voltage. The second switch element has the first withstand voltage. The third switch element has the second withstand voltage. The fourth switch element has the second withstand voltage.