Patent ID: 9673800
Date: 2017-06-06
CPC Classifications: H03K

Claim:
1. An analog switch circuit, applicable to a high frequency signal, comprising: a metal-oxide-semiconductor field-effect transistor, comprising a drain electrode, a source electrode, a gate electrode, and a body electrode, wherein a gate bias is applied to the gate electrode to control whether the metal-oxide-semiconductor field-effect transistor is ON or OFF; and a control switch, comprising a control terminal, a first terminal, a second terminal, and a third terminal, the first terminal connected to the body electrode, wherein a control bias relating to the gate bias is applied to the control terminal, so that the first terminal is connected to the second terminal when the metal-oxide-semiconductor field-effect transistor is ON, and the first terminal is connected to the third terminal when the metal-oxide-semiconductor field-effect transistor is OFF; wherein the second terminal is connected to a first resistor with a first resistance, and the third terminal is connected to a second resistor with a second resistance lower than the first resistance.